diff --git a/assignment-client/src/Agent.cpp b/assignment-client/src/Agent.cpp
index 5a01275d11..121276efcc 100644
--- a/assignment-client/src/Agent.cpp
+++ b/assignment-client/src/Agent.cpp
@@ -606,7 +606,7 @@ void Agent::setIsAvatar(bool isAvatar) {
             // start the timer
             _avatarQueryTimer->start(AVATAR_VIEW_PACKET_SEND_INTERVAL_MSECS);
 
-            connect(_scriptManager.data(), &ScriptManager::update,
+            connect(_scriptManager.get(), &ScriptManager::update,
                     scriptableAvatar.data(), &ScriptableAvatar::update, Qt::QueuedConnection);
 
             // tell the avatarAudioTimer to start ticking
@@ -642,7 +642,7 @@ void Agent::setIsAvatar(bool isAvatar) {
                 nodeList->sendPacket(std::move(packet), *node);
             });
 
-            disconnect(_scriptManager.data(), &ScriptManager::update,
+            disconnect(_scriptManager.get(), &ScriptManager::update,
                        scriptableAvatar.data(), &ScriptableAvatar::update);
 
             QMetaObject::invokeMethod(&_avatarAudioTimer, "stop");
@@ -879,7 +879,7 @@ void Agent::aboutToFinish() {
 
     // drop our shared pointer to the script engine, then ask ScriptEngines to shutdown scripting
     // this ensures that the ScriptEngine goes down before ScriptEngines
-    _scriptManager.clear();
+    _scriptManager.reset();
 
     {
         DependencyManager::get<ScriptEngines>()->shutdownScripting();
diff --git a/assignment-client/src/Agent.h b/assignment-client/src/Agent.h
index 9cd9a9ebeb..efed440a8a 100644
--- a/assignment-client/src/Agent.h
+++ b/assignment-client/src/Agent.h
@@ -37,8 +37,8 @@
 
 class ScriptEngine;
 class ScriptManager;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
-using ScriptManagerPointer = QSharedPointer<ScriptManager>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
+using ScriptManagerPointer = std::shared_ptr<ScriptManager>;
 
 class Agent : public ThreadedAssignment {
     Q_OBJECT
diff --git a/assignment-client/src/scripts/EntityScriptServer.cpp b/assignment-client/src/scripts/EntityScriptServer.cpp
index 0032c31e0a..3b8144164f 100644
--- a/assignment-client/src/scripts/EntityScriptServer.cpp
+++ b/assignment-client/src/scripts/EntityScriptServer.cpp
@@ -459,12 +459,12 @@ void EntityScriptServer::resetEntitiesScriptEngine() {
 
     // connect this script engines printedMessage signal to the global ScriptEngines these various messages
     auto scriptEngines = DependencyManager::get<ScriptEngines>().data();
-    connect(newManager.data(), &ScriptManager::printedMessage, scriptEngines, &ScriptEngines::onPrintedMessage);
-    connect(newManager.data(), &ScriptManager::errorMessage, scriptEngines, &ScriptEngines::onErrorMessage);
-    connect(newManager.data(), &ScriptManager::warningMessage, scriptEngines, &ScriptEngines::onWarningMessage);
-    connect(newManager.data(), &ScriptManager::infoMessage, scriptEngines, &ScriptEngines::onInfoMessage);
+    connect(newManager.get(), &ScriptManager::printedMessage, scriptEngines, &ScriptEngines::onPrintedMessage);
+    connect(newManager.get(), &ScriptManager::errorMessage, scriptEngines, &ScriptEngines::onErrorMessage);
+    connect(newManager.get(), &ScriptManager::warningMessage, scriptEngines, &ScriptEngines::onWarningMessage);
+    connect(newManager.get(), &ScriptManager::infoMessage, scriptEngines, &ScriptEngines::onInfoMessage);
 
-    connect(newManager.data(), &ScriptManager::update, this, [this] {
+    connect(newManager.get(), &ScriptManager::update, this, [this] {
         _entityViewer.queryOctree();
         _entityViewer.getTree()->preUpdate();
         _entityViewer.getTree()->update();
@@ -472,18 +472,18 @@ void EntityScriptServer::resetEntitiesScriptEngine() {
 
     scriptEngines->runScriptInitializers(newManager);
     newManager->runInThread();
-    auto newEngineSP = qSharedPointerCast<EntitiesScriptEngineProvider>(newManager);
+    std::shared_ptr<EntitiesScriptEngineProvider> newEngineSP = newManager;
     // On the entity script server, these are the same
     DependencyManager::get<EntityScriptingInterface>()->setPersistentEntitiesScriptEngine(newEngineSP);
     DependencyManager::get<EntityScriptingInterface>()->setNonPersistentEntitiesScriptEngine(newEngineSP);
 
     if (_entitiesScriptManager) {
-        disconnect(_entitiesScriptManager.data(), &ScriptManager::entityScriptDetailsUpdated,
+        disconnect(_entitiesScriptManager.get(), &ScriptManager::entityScriptDetailsUpdated,
                    this, &EntityScriptServer::updateEntityPPS);
     }
 
     _entitiesScriptManager.swap(newManager);
-    connect(_entitiesScriptManager.data(), &ScriptManager::entityScriptDetailsUpdated,
+    connect(_entitiesScriptManager.get(), &ScriptManager::entityScriptDetailsUpdated,
             this, &EntityScriptServer::updateEntityPPS);
 }
 
@@ -516,7 +516,7 @@ void EntityScriptServer::shutdownScriptEngine() {
     auto scriptEngines = DependencyManager::get<ScriptEngines>();
     scriptEngines->shutdownScripting();
 
-    _entitiesScriptManager.clear();
+    _entitiesScriptManager.reset();
 
     auto entityScriptingInterface = DependencyManager::get<EntityScriptingInterface>();
     // our entity tree is going to go away so tell that to the EntityScriptingInterface
diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index e250e0ce17..a6af164146 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -7476,10 +7476,10 @@ void Application::registerScriptEngineWithApplicationServices(const ScriptManage
 
     ClipboardScriptingInterface* clipboardScriptable = new ClipboardScriptingInterface();
     scriptEngine->registerGlobalObject("Clipboard", clipboardScriptable);
-    connect(scriptManager.data(), &ScriptManager::finished, clipboardScriptable, &ClipboardScriptingInterface::deleteLater);
+    connect(scriptManager.get(), &ScriptManager::finished, clipboardScriptable, &ClipboardScriptingInterface::deleteLater);
 
     scriptEngine->registerGlobalObject("Overlays", &_overlays);
-    scriptRegisterMetaType(scriptEngine.data(), RayToOverlayIntersectionResultToScriptValue,
+    scriptRegisterMetaType(scriptEngine.get(), RayToOverlayIntersectionResultToScriptValue,
                             RayToOverlayIntersectionResultFromScriptValue);
 
     bool clientScript = scriptManager->isClientScript();
@@ -7497,13 +7497,13 @@ void Application::registerScriptEngineWithApplicationServices(const ScriptManage
     }
 #endif
 
-    scriptRegisterMetaType(scriptEngine.data(), wrapperToScriptValue<ToolbarProxy>, wrapperFromScriptValue<ToolbarProxy>);
-    scriptRegisterMetaType(scriptEngine.data(),
+    scriptRegisterMetaType(scriptEngine.get(), wrapperToScriptValue<ToolbarProxy>, wrapperFromScriptValue<ToolbarProxy>);
+    scriptRegisterMetaType(scriptEngine.get(),
                             wrapperToScriptValue<ToolbarButtonProxy>, wrapperFromScriptValue<ToolbarButtonProxy>);
     scriptEngine->registerGlobalObject("Toolbars", DependencyManager::get<ToolbarScriptingInterface>().data());
 
-    scriptRegisterMetaType(scriptEngine.data(), wrapperToScriptValue<TabletProxy>, wrapperFromScriptValue<TabletProxy>);
-    scriptRegisterMetaType(scriptEngine.data(),
+    scriptRegisterMetaType(scriptEngine.get(), wrapperToScriptValue<TabletProxy>, wrapperFromScriptValue<TabletProxy>);
+    scriptRegisterMetaType(scriptEngine.get(),
                             wrapperToScriptValue<TabletButtonProxy>, wrapperFromScriptValue<TabletButtonProxy>);
     scriptEngine->registerGlobalObject("Tablet", DependencyManager::get<TabletScriptingInterface>().data());
     // FIXME remove these deprecated names for the tablet scripting interface
@@ -7554,12 +7554,12 @@ void Application::registerScriptEngineWithApplicationServices(const ScriptManage
     scriptEngine->registerGlobalObject("Account", AccountServicesScriptingInterface::getInstance()); // DEPRECATED - TO BE REMOVED
     scriptEngine->registerGlobalObject("GlobalServices", AccountServicesScriptingInterface::getInstance()); // DEPRECATED - TO BE REMOVED
     scriptEngine->registerGlobalObject("AccountServices", AccountServicesScriptingInterface::getInstance());
-    scriptRegisterMetaType(scriptEngine.data(), DownloadInfoResultToScriptValue, DownloadInfoResultFromScriptValue);
+    scriptRegisterMetaType(scriptEngine.get(), DownloadInfoResultToScriptValue, DownloadInfoResultFromScriptValue);
 
     scriptEngine->registerGlobalObject("AvatarManager", DependencyManager::get<AvatarManager>().data());
 
     scriptEngine->registerGlobalObject("LODManager", DependencyManager::get<LODManager>().data());
-    scriptRegisterMetaType(scriptEngine.data(), worldDetailQualityToScriptValue, worldDetailQualityFromScriptValue);
+    scriptRegisterMetaType(scriptEngine.get(), worldDetailQualityToScriptValue, worldDetailQualityFromScriptValue);
 
     scriptEngine->registerGlobalObject("Keyboard", DependencyManager::get<KeyboardScriptingInterface>().data());
     scriptEngine->registerGlobalObject("Performance", new PerformanceScriptingInterface());
@@ -7574,7 +7574,7 @@ void Application::registerScriptEngineWithApplicationServices(const ScriptManage
     scriptEngine->registerGlobalObject("Render", RenderScriptingInterface::getInstance());
     scriptEngine->registerGlobalObject("Workload", _gameWorkload._engine->getConfiguration().get());
 
-    GraphicsScriptingInterface::registerMetaTypes(scriptEngine.data());
+    GraphicsScriptingInterface::registerMetaTypes(scriptEngine.get());
     scriptEngine->registerGlobalObject("Graphics", DependencyManager::get<GraphicsScriptingInterface>().data());
 
     scriptEngine->registerGlobalObject("ScriptDiscoveryService", DependencyManager::get<ScriptEngines>().data());
@@ -7586,11 +7586,11 @@ void Application::registerScriptEngineWithApplicationServices(const ScriptManage
     scriptEngine->registerGlobalObject("GooglePoly", DependencyManager::get<GooglePolyScriptingInterface>().data());
 
     if (auto steamClient = PluginManager::getInstance()->getSteamClientPlugin()) {
-        scriptEngine->registerGlobalObject("Steam", new SteamScriptingInterface(scriptManager.data(), steamClient.get()));
+        scriptEngine->registerGlobalObject("Steam", new SteamScriptingInterface(scriptManager.get(), steamClient.get()));
     }
     auto scriptingInterface = DependencyManager::get<controller::ScriptingInterface>();
     scriptEngine->registerGlobalObject("Controller", scriptingInterface.data());
-    UserInputMapper::registerControllerTypes(scriptEngine.data());
+    UserInputMapper::registerControllerTypes(scriptEngine.get());
 
     auto recordingInterface = DependencyManager::get<RecordingScriptingInterface>();
     scriptEngine->registerGlobalObject("Recording", recordingInterface.data());
@@ -7606,18 +7606,18 @@ void Application::registerScriptEngineWithApplicationServices(const ScriptManage
     scriptEngine->registerGlobalObject("HifiAbout", AboutUtil::getInstance());  // Deprecated.
     scriptEngine->registerGlobalObject("ResourceRequestObserver", DependencyManager::get<ResourceRequestObserver>().data());
 
-    registerInteractiveWindowMetaType(scriptEngine.data());
+    registerInteractiveWindowMetaType(scriptEngine.get());
 
     auto pickScriptingInterface = DependencyManager::get<PickScriptingInterface>();
-    pickScriptingInterface->registerMetaTypes(scriptEngine.data());
+    pickScriptingInterface->registerMetaTypes(scriptEngine.get());
 
     // connect this script engines printedMessage signal to the global ScriptEngines these various messages
     auto scriptEngines = DependencyManager::get<ScriptEngines>().data();
-    connect(scriptManager.data(), &ScriptManager::printedMessage, scriptEngines, &ScriptEngines::onPrintedMessage);
-    connect(scriptManager.data(), &ScriptManager::errorMessage, scriptEngines, &ScriptEngines::onErrorMessage);
-    connect(scriptManager.data(), &ScriptManager::warningMessage, scriptEngines, &ScriptEngines::onWarningMessage);
-    connect(scriptManager.data(), &ScriptManager::infoMessage, scriptEngines, &ScriptEngines::onInfoMessage);
-    connect(scriptManager.data(), &ScriptManager::clearDebugWindow, scriptEngines, &ScriptEngines::onClearDebugWindow);
+    connect(scriptManager.get(), &ScriptManager::printedMessage, scriptEngines, &ScriptEngines::onPrintedMessage);
+    connect(scriptManager.get(), &ScriptManager::errorMessage, scriptEngines, &ScriptEngines::onErrorMessage);
+    connect(scriptManager.get(), &ScriptManager::warningMessage, scriptEngines, &ScriptEngines::onWarningMessage);
+    connect(scriptManager.get(), &ScriptManager::infoMessage, scriptEngines, &ScriptEngines::onInfoMessage);
+    connect(scriptManager.get(), &ScriptManager::clearDebugWindow, scriptEngines, &ScriptEngines::onClearDebugWindow);
 
 }
 
diff --git a/interface/src/Application.h b/interface/src/Application.h
index e26c02a474..15386f2b71 100644
--- a/interface/src/Application.h
+++ b/interface/src/Application.h
@@ -15,6 +15,7 @@
 #define hifi_Application_h
 
 #include <functional>
+#include <memory>
 
 #include <QtCore/QCommandLineParser>
 #include <QtCore/QHash>
@@ -93,7 +94,7 @@ class AssetUpload;
 class CompositorHelper;
 class AudioInjector;
 class ScriptEngine;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
 
 namespace controller {
     class StateController;
diff --git a/interface/src/avatar/MyAvatar.cpp b/interface/src/avatar/MyAvatar.cpp
index b460e133c0..59883cd1df 100644
--- a/interface/src/avatar/MyAvatar.cpp
+++ b/interface/src/avatar/MyAvatar.cpp
@@ -449,8 +449,8 @@ void MyAvatar::registerMetaTypes(ScriptEnginePointer engine) {
     }
     engine->globalObject().setProperty("DriveKeys", driveKeys);
 
-    scriptRegisterMetaType(engine.data(), audioListenModeToScriptValue, audioListenModeFromScriptValue);
-    scriptRegisterMetaType(engine.data(), driveKeysToScriptValue, driveKeysFromScriptValue);
+    scriptRegisterMetaType(engine.get(), audioListenModeToScriptValue, audioListenModeFromScriptValue);
+    scriptRegisterMetaType(engine.get(), driveKeysToScriptValue, driveKeysFromScriptValue);
 }
 
 void MyAvatar::setOrientationVar(const QVariant& newOrientationVar) {
@@ -2673,7 +2673,7 @@ QVariantList MyAvatar::getAvatarEntitiesVariant() {
             EntityItemProperties entityProperties = entity->getProperties(desiredProperties);
             {
                 std::lock_guard<std::mutex> guard(_scriptEngineLock);
-                ScriptValue scriptProperties = EntityItemPropertiesToScriptValue(_scriptEngine.data(), entityProperties);
+                ScriptValue scriptProperties = EntityItemPropertiesToScriptValue(_scriptEngine.get(), entityProperties);
                 avatarEntityData["properties"] = scriptProperties.toVariant();
             }
             avatarEntitiesData.append(QVariant(avatarEntityData));
diff --git a/interface/src/avatar/MyAvatar.h b/interface/src/avatar/MyAvatar.h
index 5ef1733213..d71bd4dc69 100644
--- a/interface/src/avatar/MyAvatar.h
+++ b/interface/src/avatar/MyAvatar.h
@@ -15,11 +15,11 @@
 #define hifi_MyAvatar_h
 
 #include <bitset>
+#include <memory>
 
 #include <glm/glm.hpp>
 
 #include <QUuid>
-#include <QtCore/QSharedPointer>
 
 #include <AvatarConstants.h>
 #include <avatars-renderer/Avatar.h>
@@ -43,7 +43,7 @@ class ModelItemID;
 class MyHead;
 class DetailedMotionState;
 class ScriptEngine;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
 
 /*@jsdoc
  * <p>Locomotion control types.</p>
diff --git a/interface/src/commerce/QmlCommerce.cpp b/interface/src/commerce/QmlCommerce.cpp
index 47105e0f3a..78363b077d 100644
--- a/interface/src/commerce/QmlCommerce.cpp
+++ b/interface/src/commerce/QmlCommerce.cpp
@@ -374,7 +374,7 @@ bool QmlCommerce::installApp(const QString& itemHref, const bool& alsoOpenImmedi
         // Don't try to re-load (install) a script if it's already running
         QStringList runningScripts = DependencyManager::get<ScriptEngines>()->getRunningScripts();
         if (!runningScripts.contains(scriptUrl)) {
-            if ((DependencyManager::get<ScriptEngines>()->loadScript(scriptUrl.trimmed())).isNull()) {
+            if (!(DependencyManager::get<ScriptEngines>()->loadScript(scriptUrl.trimmed()))) {
                 qCDebug(commerce) << "Couldn't load script.";
                 return false;
             }
diff --git a/interface/src/ui/JSConsole.cpp b/interface/src/ui/JSConsole.cpp
index 71472d439a..77b8af22e2 100644
--- a/interface/src/ui/JSConsole.cpp
+++ b/interface/src/ui/JSConsole.cpp
@@ -308,7 +308,7 @@ void JSConsole::highlightedCompletion(const QModelIndex& completion) {
 
 JSConsole::~JSConsole() {
     if (_scriptManager) {
-        disconnect(_scriptManager.data(), nullptr, this, nullptr);
+        disconnect(_scriptManager.get(), nullptr, this, nullptr);
         _scriptManager.reset();
     }
     delete _ui;
@@ -319,21 +319,21 @@ void JSConsole::setScriptManager(const ScriptManagerPointer& scriptManager) {
         return;
     }
     if (scriptManager != nullptr) {
-        disconnect(_scriptManager.data(), nullptr, this, nullptr);
+        disconnect(_scriptManager.get(), nullptr, this, nullptr);
         _scriptManager.reset();
     }
 
     // if scriptEngine is nullptr then create one and keep track of it using _ownScriptEngine
-    if (scriptManager.isNull()) {
+    if (!scriptManager) {
         _scriptManager = DependencyManager::get<ScriptEngines>()->loadScript(_consoleFileName, false);
     } else {
         _scriptManager = scriptManager;
     }
 
-    connect(_scriptManager.data(), &ScriptManager::printedMessage, this, &JSConsole::handlePrint);
-    connect(_scriptManager.data(), &ScriptManager::infoMessage, this, &JSConsole::handleInfo);
-    connect(_scriptManager.data(), &ScriptManager::warningMessage, this, &JSConsole::handleWarning);
-    connect(_scriptManager.data(), &ScriptManager::errorMessage, this, &JSConsole::handleError);
+    connect(_scriptManager.get(), &ScriptManager::printedMessage, this, &JSConsole::handlePrint);
+    connect(_scriptManager.get(), &ScriptManager::infoMessage, this, &JSConsole::handleInfo);
+    connect(_scriptManager.get(), &ScriptManager::warningMessage, this, &JSConsole::handleWarning);
+    connect(_scriptManager.get(), &ScriptManager::errorMessage, this, &JSConsole::handleError);
 }
 
 void JSConsole::executeCommand(const QString& command) {
@@ -349,13 +349,13 @@ void JSConsole::executeCommand(const QString& command) {
 
     appendMessage(">", "<span style='" + COMMAND_STYLE + "'>" + command.toHtmlEscaped() + "</span>");
 
-    QWeakPointer<ScriptManager> weakScriptManager = _scriptManager;
+    std::weak_ptr<ScriptManager> weakScriptManager = _scriptManager;
     auto consoleFileName = _consoleFileName;
     QFuture<ScriptValue> future = QtConcurrent::run([weakScriptManager, consoleFileName, command]() -> ScriptValue {
         ScriptValue result;
         auto scriptManager = weakScriptManager.lock();
         if (scriptManager) {
-            BLOCKING_INVOKE_METHOD(scriptManager.data(), "evaluate",
+            BLOCKING_INVOKE_METHOD(scriptManager.get(), "evaluate",
                 Q_RETURN_ARG(ScriptValue, result),
                 Q_ARG(const QString&, command),
                 Q_ARG(const QString&, consoleFileName));
diff --git a/interface/src/ui/JSConsole.h b/interface/src/ui/JSConsole.h
index b07f972f9a..4bfa4cb107 100644
--- a/interface/src/ui/JSConsole.h
+++ b/interface/src/ui/JSConsole.h
@@ -12,6 +12,8 @@
 #ifndef hifi_JSConsole_h
 #define hifi_JSConsole_h
 
+#include <memory>
+
 #include <QFutureWatcher>
 #include <QObject>
 #include <QCompleter>
@@ -22,7 +24,7 @@
 
 class QStandardItemModel;
 class ScriptManager;
-using ScriptManagerPointer = QSharedPointer<ScriptManager>;
+using ScriptManagerPointer = std::shared_ptr<ScriptManager>;
 
 const QString CONSOLE_TITLE = "Scripting Console";
 const float CONSOLE_WINDOW_OPACITY = 0.95f;
diff --git a/interface/src/ui/TestingDialog.cpp b/interface/src/ui/TestingDialog.cpp
index c357820cf3..49653c032f 100644
--- a/interface/src/ui/TestingDialog.cpp
+++ b/interface/src/ui/TestingDialog.cpp
@@ -26,7 +26,7 @@ TestingDialog::TestingDialog(QWidget* parent) :
 
     _manager = DependencyManager::get<ScriptEngines>()->loadScript(qApp->applicationDirPath() + testRunnerRelativePath);
     _console->setScriptManager(_manager);
-    connect(_manager.data(), &ScriptManager::finished, this, &TestingDialog::onTestingFinished);
+    connect(_manager.get(), &ScriptManager::finished, this, &TestingDialog::onTestingFinished);
 }
 
 void TestingDialog::onTestingFinished(const QString& scriptPath) {
diff --git a/interface/src/ui/TestingDialog.h b/interface/src/ui/TestingDialog.h
index 968188fbca..2197737325 100644
--- a/interface/src/ui/TestingDialog.h
+++ b/interface/src/ui/TestingDialog.h
@@ -12,12 +12,13 @@
 #ifndef hifi_TestingDialog_h
 #define hifi_TestingDialog_h
 
+#include <memory>
+
 #include <QDialog>
-#include <QtCore/QSharedPointer>
 #include "JSConsole.h"
 
 class ScriptManager;
-using ScriptManagerPointer = QSharedPointer<ScriptManager>;
+using ScriptManagerPointer = std::shared_ptr<ScriptManager>;
 
 const QString windowLabel = "Client Script Tests";
 const QString testRunnerRelativePath = "/scripts/developer/tests/unit_tests/testRunner.js";
diff --git a/interface/src/ui/overlays/Overlays.cpp b/interface/src/ui/overlays/Overlays.cpp
index ee2bcc75ff..7345e72b37 100644
--- a/interface/src/ui/overlays/Overlays.cpp
+++ b/interface/src/ui/overlays/Overlays.cpp
@@ -641,7 +641,7 @@ EntityItemProperties Overlays::convertOverlayToEntityProperties(QVariantMap& ove
 
 QVariantMap Overlays::convertEntityToOverlayProperties(const EntityItemProperties& properties) {
     ScriptEnginePointer scriptEngine = newScriptEngine();
-    QVariantMap overlayProps = EntityItemPropertiesToScriptValue(scriptEngine.data(), properties).toVariant().toMap();
+    QVariantMap overlayProps = EntityItemPropertiesToScriptValue(scriptEngine.get(), properties).toVariant().toMap();
 
     QString type = overlayProps["type"].toString();
     overlayProps["type"] = entityToOverlayType(type);
diff --git a/libraries/animation/src/AnimationObject.cpp b/libraries/animation/src/AnimationObject.cpp
index 09ac8114b9..6782768f5b 100644
--- a/libraries/animation/src/AnimationObject.cpp
+++ b/libraries/animation/src/AnimationObject.cpp
@@ -19,7 +19,7 @@
 #include "AnimationCache.h"
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager) {
-    registerAnimationTypes(manager->engine().data());
+    registerAnimationTypes(manager->engine().get());
 });
 
 QStringList AnimationObject::getJointNames() const {
diff --git a/libraries/audio/src/AudioEffectOptions.cpp b/libraries/audio/src/AudioEffectOptions.cpp
index 8edddd9092..2c9c946202 100644
--- a/libraries/audio/src/AudioEffectOptions.cpp
+++ b/libraries/audio/src/AudioEffectOptions.cpp
@@ -16,7 +16,7 @@
 #include <ScriptValue.h>
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager) {
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine();
 
     ScriptValue audioEffectOptionsConstructorValue = scriptEngine->newFunction(AudioEffectOptions::constructor);
     scriptEngine->globalObject().setProperty("AudioEffectOptions", audioEffectOptionsConstructorValue);
diff --git a/libraries/audio/src/AudioScriptingInterface.cpp b/libraries/audio/src/AudioScriptingInterface.cpp
index f84efada04..ec7a50e5df 100644
--- a/libraries/audio/src/AudioScriptingInterface.cpp
+++ b/libraries/audio/src/AudioScriptingInterface.cpp
@@ -23,7 +23,7 @@
 
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager){
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine().get();
 
     registerAudioMetaTypes(scriptEngine);
     scriptEngine->registerGlobalObject("Audio", DependencyManager::get<AudioScriptingInterface>().data());
diff --git a/libraries/audio/src/ScriptAudioInjector.cpp b/libraries/audio/src/ScriptAudioInjector.cpp
index d50bf6f163..09f24c7207 100644
--- a/libraries/audio/src/ScriptAudioInjector.cpp
+++ b/libraries/audio/src/ScriptAudioInjector.cpp
@@ -18,7 +18,7 @@
 #include <ScriptValue.h>
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager) {
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine().get();
 
     scriptRegisterMetaType(scriptEngine, injectorToScriptValue, injectorFromScriptValue);
 });
diff --git a/libraries/avatars/src/AvatarData.cpp b/libraries/avatars/src/AvatarData.cpp
index 0c2992cebd..348d42b5af 100644
--- a/libraries/avatars/src/AvatarData.cpp
+++ b/libraries/avatars/src/AvatarData.cpp
@@ -69,7 +69,7 @@ static const float DEFAULT_AVATAR_DENSITY = 1000.0f; // density of water
 #define ASSERT(COND)  do { if (!(COND)) { abort(); } } while(0)
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager) {
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine().get();
 
     registerAvatarTypes(scriptEngine);
     scriptRegisterMetaType(scriptEngine, RayToAvatarIntersectionResultToScriptValue, RayToAvatarIntersectionResultFromScriptValue);
diff --git a/libraries/avatars/src/ScriptAvatarData.cpp b/libraries/avatars/src/ScriptAvatarData.cpp
index 5b33f53cd5..9f23fee84a 100644
--- a/libraries/avatars/src/ScriptAvatarData.cpp
+++ b/libraries/avatars/src/ScriptAvatarData.cpp
@@ -25,7 +25,7 @@ void avatarDataFromScriptValue(const ScriptValue& object, ScriptAvatarData*& out
 }
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager) {
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine().get();
 
     scriptRegisterMetaType(scriptEngine, avatarDataToScriptValue, avatarDataFromScriptValue);
 });
diff --git a/libraries/baking/src/MaterialBaker.cpp b/libraries/baking/src/MaterialBaker.cpp
index f8d846285c..68ca7316c4 100644
--- a/libraries/baking/src/MaterialBaker.cpp
+++ b/libraries/baking/src/MaterialBaker.cpp
@@ -212,13 +212,15 @@ void MaterialBaker::outputMaterial() {
         if (_materialResource->parsedMaterials.networkMaterials.size() == 1) {
             auto networkMaterial = _materialResource->parsedMaterials.networkMaterials.begin();
             auto scriptableMaterial = scriptable::ScriptableMaterial(networkMaterial->second);
-            QVariant materialVariant = scriptable::scriptableMaterialToScriptValue(_scriptEngine.data(), scriptableMaterial).toVariant();
+            QVariant materialVariant =
+                scriptable::scriptableMaterialToScriptValue(_scriptEngine.get(), scriptableMaterial).toVariant();
             json.insert("materials", QJsonDocument::fromVariant(materialVariant).object());
         } else {
             QJsonArray materialArray;
             for (auto networkMaterial : _materialResource->parsedMaterials.networkMaterials) {
                 auto scriptableMaterial = scriptable::ScriptableMaterial(networkMaterial.second);
-                QVariant materialVariant = scriptable::scriptableMaterialToScriptValue(_scriptEngine.data(), scriptableMaterial).toVariant();
+                QVariant materialVariant =
+                    scriptable::scriptableMaterialToScriptValue(_scriptEngine.get(), scriptableMaterial).toVariant();
                 materialArray.append(QJsonDocument::fromVariant(materialVariant).object());
             }
             json.insert("materials", materialArray);
diff --git a/libraries/controllers/src/controllers/ScriptingInterface.cpp b/libraries/controllers/src/controllers/ScriptingInterface.cpp
index 9e538b999b..b6e57a0c4e 100644
--- a/libraries/controllers/src/controllers/ScriptingInterface.cpp
+++ b/libraries/controllers/src/controllers/ScriptingInterface.cpp
@@ -42,7 +42,7 @@ void inputControllerFromScriptValue(const ScriptValue& object, controller::Input
 }
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager) {
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine().get();
 
     scriptRegisterMetaType(scriptEngine, inputControllerToScriptValue, inputControllerFromScriptValue);
 });
diff --git a/libraries/entities-renderer/src/EntityTreeRenderer.cpp b/libraries/entities-renderer/src/EntityTreeRenderer.cpp
index 4662fa2ad0..b9014c5be8 100644
--- a/libraries/entities-renderer/src/EntityTreeRenderer.cpp
+++ b/libraries/entities-renderer/src/EntityTreeRenderer.cpp
@@ -161,42 +161,52 @@ int EntityTreeRenderer::_entitiesScriptEngineCount = 0;
 void EntityTreeRenderer::setupEntityScriptEngineSignals(const ScriptManagerPointer& scriptManager) {
     auto entityScriptingInterface = DependencyManager::get<EntityScriptingInterface>();
 
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::mousePressOnEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::mousePressOnEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "mousePressOnEntity", event);
     });
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::mouseDoublePressOnEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::mouseDoublePressOnEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "mouseDoublePressOnEntity", event);
     });
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::mouseMoveOnEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::mouseMoveOnEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "mouseMoveOnEntity", event);
         // FIXME: this is a duplicate of mouseMoveOnEntity, but it seems like some scripts might use this naming
         scriptManager->callEntityScriptMethod(entityID, "mouseMoveEvent", event);
     });
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::mouseReleaseOnEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::mouseReleaseOnEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "mouseReleaseOnEntity", event);
     });
 
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::clickDownOnEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::clickDownOnEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "clickDownOnEntity", event);
     });
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::holdingClickOnEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::holdingClickOnEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "holdingClickOnEntity", event);
     });
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::clickReleaseOnEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::clickReleaseOnEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "clickReleaseOnEntity", event);
     });
 
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::hoverEnterEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::hoverEnterEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "hoverEnterEntity", event);
     });
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::hoverOverEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::hoverOverEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "hoverOverEntity", event);
     });
-    connect(entityScriptingInterface.data(), &EntityScriptingInterface::hoverLeaveEntity, scriptManager.data(), [&](const EntityItemID& entityID, const PointerEvent& event) {
+    connect(entityScriptingInterface.data(), &EntityScriptingInterface::hoverLeaveEntity, scriptManager.get(),
+            [&](const EntityItemID& entityID, const PointerEvent& event) {
         scriptManager->callEntityScriptMethod(entityID, "hoverLeaveEntity", event);
     });
 
-    connect(scriptManager.data(), &ScriptManager::entityScriptPreloadFinished, [&](const EntityItemID& entityID) {
+    connect(scriptManager.get(), &ScriptManager::entityScriptPreloadFinished, [&](const EntityItemID& entityID) {
         EntityItemPointer entity = getTree()->findEntityByID(entityID);
         if (entity) {
             entity->setScriptHasFinishedPreload(true);
@@ -215,7 +225,7 @@ void EntityTreeRenderer::resetPersistentEntitiesScriptEngine() {
                                                 QString("about:Entities %1").arg(++_entitiesScriptEngineCount));
     DependencyManager::get<ScriptEngines>()->runScriptInitializers(_persistentEntitiesScriptManager);
     _persistentEntitiesScriptManager->runInThread();
-    auto entitiesScriptEngineProvider = qSharedPointerCast<EntitiesScriptEngineProvider>(_persistentEntitiesScriptManager);
+    std::shared_ptr<EntitiesScriptEngineProvider> entitiesScriptEngineProvider = _persistentEntitiesScriptManager;
     auto entityScriptingInterface = DependencyManager::get<EntityScriptingInterface>();
     entityScriptingInterface->setPersistentEntitiesScriptEngine(entitiesScriptEngineProvider);
 
@@ -233,7 +243,7 @@ void EntityTreeRenderer::resetNonPersistentEntitiesScriptEngine() {
                                                 QString("about:Entities %1").arg(++_entitiesScriptEngineCount));
     DependencyManager::get<ScriptEngines>()->runScriptInitializers(_nonPersistentEntitiesScriptManager);
     _nonPersistentEntitiesScriptManager->runInThread();
-    auto entitiesScriptEngineProvider = qSharedPointerCast<EntitiesScriptEngineProvider>(_nonPersistentEntitiesScriptManager);
+    std::shared_ptr<EntitiesScriptEngineProvider> entitiesScriptEngineProvider = _nonPersistentEntitiesScriptManager;
     DependencyManager::get<EntityScriptingInterface>()->setNonPersistentEntitiesScriptEngine(entitiesScriptEngineProvider);
 
     setupEntityScriptEngineSignals(_nonPersistentEntitiesScriptManager);
diff --git a/libraries/entities-renderer/src/EntityTreeRenderer.h b/libraries/entities-renderer/src/EntityTreeRenderer.h
index 7d33a12197..e008bc9069 100644
--- a/libraries/entities-renderer/src/EntityTreeRenderer.h
+++ b/libraries/entities-renderer/src/EntityTreeRenderer.h
@@ -12,6 +12,8 @@
 #ifndef hifi_EntityTreeRenderer_h
 #define hifi_EntityTreeRenderer_h
 
+#include <memory>
+
 #include <QtCore/QSet>
 #include <QtCore/QStack>
 #include <QtGui/QMouseEvent>
@@ -35,8 +37,8 @@ class ZoneEntityItem;
 class EntityItem;
 class ScriptEngine;
 class ScriptManager;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
-using ScriptManagerPointer = QSharedPointer<ScriptManager>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
+using ScriptManagerPointer = std::shared_ptr<ScriptManager>;
 
 namespace render { namespace entities {
     class EntityRenderer;
diff --git a/libraries/entities-renderer/src/ModelScriptingInterface.cpp b/libraries/entities-renderer/src/ModelScriptingInterface.cpp
index 0c5dd33a69..0b152b56c5 100644
--- a/libraries/entities-renderer/src/ModelScriptingInterface.cpp
+++ b/libraries/entities-renderer/src/ModelScriptingInterface.cpp
@@ -19,7 +19,7 @@
 #include <OBJWriter.h>
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager) {
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine();
 
     scriptEngine->registerGlobalObject("Model", new ModelScriptingInterface(manager));
 });
diff --git a/libraries/entities-renderer/src/ModelScriptingInterface.h b/libraries/entities-renderer/src/ModelScriptingInterface.h
index 1f11703ad6..698d920178 100644
--- a/libraries/entities-renderer/src/ModelScriptingInterface.h
+++ b/libraries/entities-renderer/src/ModelScriptingInterface.h
@@ -15,14 +15,15 @@
 #ifndef hifi_ModelScriptingInterface_h
 #define hifi_ModelScriptingInterface_h
 
+#include <memory>
+
 #include <QtCore/QObject>
-#include <QtCore/QSharedPointer>
 
 #include <RegisteredMetaTypes.h>
 #include <ScriptValue.h>
 
 class ScriptEngine;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
 
 /*@jsdoc
  * The <code>Model</code> API provides the ability to manipulate meshes. You can get the meshes for an entity using 
@@ -101,7 +102,7 @@ public:
     Q_INVOKABLE ScriptValue getVertex(MeshProxy* meshProxy, int vertexIndex);
 
 private:
-    ScriptEnginePointer _modelScriptEngine { nullptr };
+    ScriptEnginePointer _modelScriptEngine;
 };
 
 #endif // hifi_ModelScriptingInterface_h
diff --git a/libraries/entities/src/EntityEditFilters.cpp b/libraries/entities/src/EntityEditFilters.cpp
index 6901b0b164..563f62d380 100644
--- a/libraries/entities/src/EntityEditFilters.cpp
+++ b/libraries/entities/src/EntityEditFilters.cpp
@@ -264,7 +264,7 @@ void EntityEditFilters::scriptRequestFinished(EntityItemID entityID) {
             engine->setProperty("fileName", urlString);
             engine->setProperty("entityID", entityID);
             engine->globalObject().setProperty("Script", engine->newQObject(manager.get()));
-            DependencyManager::get<ScriptInitializers>()->runScriptInitializers(engine.data());
+            DependencyManager::get<ScriptInitializers>()->runScriptInitializers(engine.get());
             engine->evaluate(scriptContents, urlString);
             if (!hadUncaughtExceptions(*engine, urlString)) {
                 // put the engine in the engine map (so we don't leak them, etc...)
diff --git a/libraries/entities/src/EntityScriptingInterface.cpp b/libraries/entities/src/EntityScriptingInterface.cpp
index 8d0b5daee3..8ed610dc69 100644
--- a/libraries/entities/src/EntityScriptingInterface.cpp
+++ b/libraries/entities/src/EntityScriptingInterface.cpp
@@ -49,7 +49,7 @@ const QString GRABBABLE_USER_DATA = "{\"grabbableKey\":{\"grabbable\":true}}";
 const QString NOT_GRABBABLE_USER_DATA = "{\"grabbableKey\":{\"grabbable\":false}}";
 
 void staticEntityScriptInitializer(ScriptManager* manager) {
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine().get();
 
     auto entityScriptingInterface = DependencyManager::get<EntityScriptingInterface>();
     entityScriptingInterface->init();
@@ -145,7 +145,8 @@ void EntityScriptingInterface::attachDefaultEventHandlers(ScriptManager* manager
     using SingleEntityHandler = std::function<void(const EntityItemID&)>;
     auto makeSingleEntityHandler = [manager](QString eventName) -> SingleEntityHandler {
         return [manager, eventName](const EntityItemID& entityItemID) {
-            manager->forwardHandlerCall(entityItemID, eventName, { EntityItemIDtoScriptValue(manager->engine().data(), entityItemID) });
+            manager->forwardHandlerCall(entityItemID, eventName,
+                                        { EntityItemIDtoScriptValue(manager->engine().get(), entityItemID) });
         };
     };
 
@@ -159,7 +160,7 @@ void EntityScriptingInterface::attachDefaultEventHandlers(ScriptManager* manager
     auto makePointerHandler = [manager](QString eventName) -> PointerHandler {
         return [manager, eventName](const EntityItemID& entityItemID, const PointerEvent& event) {
             if (!EntityTree::areEntityClicksCaptured()) {
-                ScriptEngine* engine = manager->engine().data();
+                ScriptEngine* engine = manager->engine().get();
                 manager->forwardHandlerCall(entityItemID, eventName,
                                             { EntityItemIDtoScriptValue(engine, entityItemID), event.toScriptValue(engine) });
             }
@@ -176,7 +177,7 @@ void EntityScriptingInterface::attachDefaultEventHandlers(ScriptManager* manager
     using CollisionHandler = std::function<void(const EntityItemID&, const EntityItemID&, const Collision&)>;
     auto makeCollisionHandler = [manager](QString eventName) -> CollisionHandler {
         return [manager, eventName](const EntityItemID& idA, const EntityItemID& idB, const Collision& collision) {
-            ScriptEngine* engine = manager->engine().data();
+            ScriptEngine* engine = manager->engine().get();
             manager->forwardHandlerCall(idA, eventName,
                                         { EntityItemIDtoScriptValue(engine, idA),
                                           EntityItemIDtoScriptValue(engine, idB),
@@ -1234,12 +1235,12 @@ QSizeF EntityScriptingInterface::textSize(const QUuid& id, const QString& text)
     return EntityTree::textSize(id, text);
 }
 
-void EntityScriptingInterface::setPersistentEntitiesScriptEngine(QSharedPointer<EntitiesScriptEngineProvider> manager) {
+void EntityScriptingInterface::setPersistentEntitiesScriptEngine(std::shared_ptr<EntitiesScriptEngineProvider> manager) {
     std::lock_guard<std::recursive_mutex> lock(_entitiesScriptEngineLock);
     _persistentEntitiesScriptManager = manager;
 }
 
-void EntityScriptingInterface::setNonPersistentEntitiesScriptEngine(QSharedPointer<EntitiesScriptEngineProvider> manager) {
+void EntityScriptingInterface::setNonPersistentEntitiesScriptEngine(std::shared_ptr<EntitiesScriptEngineProvider> manager) {
     std::lock_guard<std::recursive_mutex> lock(_entitiesScriptEngineLock);
     _nonPersistentEntitiesScriptManager = manager;
 }
@@ -1528,7 +1529,7 @@ bool EntityPropertyMetadataRequest::script(EntityItemID entityID, const ScriptVa
         request->deleteLater();
     });
     auto entityScriptingInterface = DependencyManager::get<EntityScriptingInterface>();
-    entityScriptingInterface->withEntitiesScriptEngine([&](QSharedPointer<EntitiesScriptEngineProvider> entitiesScriptEngine) {
+    entityScriptingInterface->withEntitiesScriptEngine([&](std::shared_ptr<EntitiesScriptEngineProvider> entitiesScriptEngine) {
         if (entitiesScriptEngine) {
             request->setFuture(entitiesScriptEngine->getLocalEntityScriptDetails(entityID));
         }
@@ -2442,7 +2443,7 @@ void EntityScriptingInterface::getMeshes(const QUuid& entityID, const ScriptValu
     bool success = entity->getMeshes(result);
 
     if (success) {
-        ScriptValue resultAsScriptValue = meshesToScriptValue(engine.data(), result);
+        ScriptValue resultAsScriptValue = meshesToScriptValue(engine.get(), result);
         ScriptValueList args{ resultAsScriptValue, engine->newValue(true) };
         callback.call(ScriptValue(), args);
     } else {
diff --git a/libraries/entities/src/EntityScriptingInterface.h b/libraries/entities/src/EntityScriptingInterface.h
index 7e6864e05f..bbcaa6f8c7 100644
--- a/libraries/entities/src/EntityScriptingInterface.h
+++ b/libraries/entities/src/EntityScriptingInterface.h
@@ -15,6 +15,8 @@
 #ifndef hifi_EntityScriptingInterface_h
 #define hifi_EntityScriptingInterface_h
 
+#include <memory>
+
 #include <QtCore/QObject>
 #include <QtCore/QStringList>
 #include <QtCore/QSharedPointer>
@@ -185,8 +187,8 @@ public:
 
     void setEntityTree(EntityTreePointer modelTree);
     EntityTreePointer getEntityTree() { return _entityTree; }
-    void setPersistentEntitiesScriptEngine(QSharedPointer<EntitiesScriptEngineProvider> manager);
-    void setNonPersistentEntitiesScriptEngine(QSharedPointer<EntitiesScriptEngineProvider> manager);
+    void setPersistentEntitiesScriptEngine(std::shared_ptr<EntitiesScriptEngineProvider> manager);
+    void setNonPersistentEntitiesScriptEngine(std::shared_ptr<EntitiesScriptEngineProvider> manager);
 
     void resetActivityTracking();
     ActivityTracking getActivityTracking() const { return _activityTracking; }
@@ -2532,7 +2534,7 @@ signals:
     void webEventReceived(const EntityItemID& entityItemID, const QVariant& message);
 
 protected:
-    void withEntitiesScriptEngine(std::function<void(QSharedPointer<EntitiesScriptEngineProvider>)> function, const EntityItemID& id) {
+    void withEntitiesScriptEngine(std::function<void(std::shared_ptr<EntitiesScriptEngineProvider>)> function, const EntityItemID& id) {
         auto entity = getEntityTree()->findEntityByEntityItemID(id);
         if (entity) {
             std::lock_guard<std::recursive_mutex> lock(_entitiesScriptEngineLock);
@@ -2573,8 +2575,8 @@ private:
     EntityTreePointer _entityTree;
 
     std::recursive_mutex _entitiesScriptEngineLock;
-    QSharedPointer<EntitiesScriptEngineProvider> _persistentEntitiesScriptManager;
-    QSharedPointer<EntitiesScriptEngineProvider> _nonPersistentEntitiesScriptManager;
+    std::shared_ptr<EntitiesScriptEngineProvider> _persistentEntitiesScriptManager;
+    std::shared_ptr<EntitiesScriptEngineProvider> _nonPersistentEntitiesScriptManager;
 
     bool _bidOnSimulationOwnership { false };
 
diff --git a/libraries/entities/src/EntityTree.cpp b/libraries/entities/src/EntityTree.cpp
index 5372492036..0bb59095a5 100644
--- a/libraries/entities/src/EntityTree.cpp
+++ b/libraries/entities/src/EntityTree.cpp
@@ -2943,7 +2943,7 @@ bool EntityTree::writeToMap(QVariantMap& entityDescription, OctreeElementPointer
     entityDescription["DataVersion"] = _persistDataVersion;
     entityDescription["Id"] = _persistID;
     ScriptEnginePointer engine = newScriptEngine();
-    RecurseOctreeToMapOperator theOperator(entityDescription, element, engine.data(), skipDefaultValues,
+    RecurseOctreeToMapOperator theOperator(entityDescription, element, engine.get(), skipDefaultValues,
                                             skipThoseWithBadParents, _myAvatar);
     withReadLock([&] {
         recurseTreeWithOperator(&theOperator);
@@ -3268,7 +3268,7 @@ bool EntityTree::readFromMap(QVariantMap& map, const bool isImport) {
 
 bool EntityTree::writeToJSON(QString& jsonString, const OctreeElementPointer& element) {
     ScriptEnginePointer engine = newScriptEngine();
-    RecurseOctreeToJSONOperator theOperator(element, engine.data(), jsonString);
+    RecurseOctreeToJSONOperator theOperator(element, engine.get(), jsonString);
     withReadLock([&] {
         recurseTreeWithOperator(&theOperator);
     });
diff --git a/libraries/midi/src/Midi.cpp b/libraries/midi/src/Midi.cpp
index c9b7b348a8..d88f31394e 100644
--- a/libraries/midi/src/Midi.cpp
+++ b/libraries/midi/src/Midi.cpp
@@ -135,7 +135,7 @@ void CALLBACK MidiInProc(HMIDIIN hMidiIn, UINT wMsg, DWORD_PTR dwInstance, DWORD
 }
 
 STATIC_SCRIPT_INITIALIZER(+[](ScriptManager* manager) {
-    auto scriptEngine = manager->engine().data();
+    auto scriptEngine = manager->engine();
 
     scriptEngine->registerGlobalObject("Midi", DependencyManager::get<Midi>().data());
 });
diff --git a/libraries/script-engine/src/AbstractScriptingServicesInterface.h b/libraries/script-engine/src/AbstractScriptingServicesInterface.h
index 2e96924ab6..5c99240e90 100644
--- a/libraries/script-engine/src/AbstractScriptingServicesInterface.h
+++ b/libraries/script-engine/src/AbstractScriptingServicesInterface.h
@@ -15,10 +15,10 @@
 #ifndef hifi_AbstractScriptingServicesInterface_h
 #define hifi_AbstractScriptingServicesInterface_h
 
-#include <QtCore/QSharedPointer>
+#include <memory>
 
 class ScriptManager;
-using ScriptManagerPointer = QSharedPointer<ScriptManager>;
+using ScriptManagerPointer = std::shared_ptr<ScriptManager>;
 
 /// Interface provided by Application to other objects that need access to scripting services of the application
 class AbstractScriptingServicesInterface {
diff --git a/libraries/script-engine/src/ScriptContext.h b/libraries/script-engine/src/ScriptContext.h
index 9a38a67c71..e046fe88ca 100644
--- a/libraries/script-engine/src/ScriptContext.h
+++ b/libraries/script-engine/src/ScriptContext.h
@@ -15,7 +15,8 @@
 #ifndef hifi_ScriptContext_h
 #define hifi_ScriptContext_h
 
-#include <QtCore/QSharedPointer>
+#include <memory>
+
 #include <QtCore/QString>
 #include <QtCore/QStringList>
 
@@ -24,9 +25,9 @@
 class ScriptContext;
 class ScriptEngine;
 class ScriptFunctionContext;
-using ScriptContextPointer = QSharedPointer<ScriptContext>;
-using ScriptFunctionContextPointer = QSharedPointer<ScriptFunctionContext>;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
+using ScriptContextPointer = std::shared_ptr<ScriptContext>;
+using ScriptFunctionContextPointer = std::shared_ptr<ScriptFunctionContext>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
 
 /// [ScriptInterface] Provides an engine-independent interface for QScriptContextInfo
 class ScriptFunctionContext {
diff --git a/libraries/script-engine/src/ScriptEngine.cpp b/libraries/script-engine/src/ScriptEngine.cpp
index fa791709d4..4bcac85e45 100644
--- a/libraries/script-engine/src/ScriptEngine.cpp
+++ b/libraries/script-engine/src/ScriptEngine.cpp
@@ -17,7 +17,7 @@
 #include "qtscript/ScriptEngineQtScript.h"
 
 ScriptEnginePointer newScriptEngine(ScriptManager* manager) {
-    return QSharedPointer<ScriptEngineQtScript>(new ScriptEngineQtScript(manager));
+    return std::make_shared<ScriptEngineQtScript>(manager);
 }
 
 ScriptValue makeScopedHandlerObject(const ScriptValue& scopeOrCallback, const ScriptValue& methodOrName) {
diff --git a/libraries/script-engine/src/ScriptEngine.h b/libraries/script-engine/src/ScriptEngine.h
index d7729ce75f..c69a0af8c3 100644
--- a/libraries/script-engine/src/ScriptEngine.h
+++ b/libraries/script-engine/src/ScriptEngine.h
@@ -16,9 +16,10 @@
 #ifndef hifi_ScriptEngine_h
 #define hifi_ScriptEngine_h
 
+#include <memory>
+
 #include <QtCore/QFlags>
 #include <QtCore/QObject>
-#include <QtCore/QSharedPointer>
 
 #include "ScriptValue.h"
 
@@ -31,8 +32,8 @@ class ScriptContext;
 class ScriptEngine;
 class ScriptManager;
 class ScriptProgram;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
-using ScriptProgramPointer = QSharedPointer<ScriptProgram>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
+using ScriptProgramPointer = std::shared_ptr<ScriptProgram>;
 
 Q_DECLARE_METATYPE(ScriptEnginePointer);
 
diff --git a/libraries/script-engine/src/ScriptEngines.cpp b/libraries/script-engine/src/ScriptEngines.cpp
index 405ef25990..ee6e6ffc2f 100644
--- a/libraries/script-engine/src/ScriptEngines.cpp
+++ b/libraries/script-engine/src/ScriptEngines.cpp
@@ -422,7 +422,7 @@ void ScriptEngines::stopAllScripts(bool restart) {
             _isReloading = true;
             ScriptManager::Type type = scriptManager->getType();
 
-            connect(scriptManager.data(), &ScriptManager::finished, this, [this, type, isOverrideScript](QString scriptName) {
+            connect(scriptManager.get(), &ScriptManager::finished, this, [this, type, isOverrideScript](QString scriptName) {
                 reloadScript(scriptName, !isOverrideScript)->setType(type);
             });
         }
@@ -458,7 +458,7 @@ bool ScriptEngines::stopScript(const QString& rawScriptURL, bool restart) {
                 scriptCache->deleteScript(scriptURL);
 
                 if (!scriptManager->isStopping()) {
-                    connect(scriptManager.data(), &ScriptManager::finished,
+                    connect(scriptManager.get(), &ScriptManager::finished,
                             this, [this, isUserLoaded, type](QString scriptName, ScriptManagerPointer manager) {
                             reloadScript(scriptName, isUserLoaded)->setType(type);
                     });
@@ -523,12 +523,12 @@ ScriptManagerPointer ScriptEngines::loadScript(const QUrl& scriptFilename, bool
         launchScriptEngine(scriptManager);
     } else {
         // connect to the appropriate signals of this script engine
-        connect(scriptManager.data(), &ScriptManager::scriptLoaded, this, &ScriptEngines::onScriptEngineLoaded);
-        connect(scriptManager.data(), &ScriptManager::errorLoadingScript, this, &ScriptEngines::onScriptEngineError);
+        connect(scriptManager.get(), &ScriptManager::scriptLoaded, this, &ScriptEngines::onScriptEngineLoaded);
+        connect(scriptManager.get(), &ScriptManager::errorLoadingScript, this, &ScriptEngines::onScriptEngineError);
 
         // Shutdown Interface when script finishes, if requested
         if (quitWhenFinished) {
-            connect(scriptManager.data(), &ScriptManager::finished, this, &ScriptEngines::quitWhenFinished);
+            connect(scriptManager.get(), &ScriptManager::finished, this, &ScriptEngines::quitWhenFinished);
         }
 
         // get the script engine object to load the script at the designated script URL
@@ -554,7 +554,7 @@ ScriptManagerPointer ScriptEngines::getScriptEngine(const QUrl& rawScriptURL) {
 // FIXME - change to new version of ScriptCache loading notification
 void ScriptEngines::onScriptEngineLoaded(const QString& rawScriptURL) {
     UserActivityLogger::getInstance().loadedScript(rawScriptURL);
-    ScriptManagerPointer scriptEngine = qobject_cast<ScriptManager*>(sender())->sharedFromThis();
+    ScriptManagerPointer scriptEngine = qobject_cast<ScriptManager*>(sender())->shared_from_this();
 
     launchScriptEngine(scriptEngine);
 
@@ -575,16 +575,18 @@ void ScriptEngines::quitWhenFinished() {
 }
 
 int ScriptEngines::runScriptInitializers(ScriptManagerPointer scriptManager) {
-    auto nativeCount = DependencyManager::get<ScriptInitializers>()->runScriptInitializers(scriptManager->engine().data());
+    auto nativeCount = DependencyManager::get<ScriptInitializers>()->runScriptInitializers(scriptManager->engine().get());
     return nativeCount + ScriptInitializerMixin<ScriptManagerPointer>::runScriptInitializers(scriptManager);
 }
 
 void ScriptEngines::launchScriptEngine(ScriptManagerPointer scriptManager) {
-    connect(scriptManager.data(), &ScriptManager::finished, this, &ScriptEngines::onScriptFinished, Qt::DirectConnection);
-    connect(scriptManager.data(), &ScriptManager::loadScript, [this](const QString& scriptName, bool userLoaded) {
+    connect(scriptManager.get(), &ScriptManager::finished, this, &ScriptEngines::onScriptFinished, Qt::DirectConnection);
+    connect(scriptManager.get(), &ScriptManager::loadScript,
+            [this](const QString& scriptName, bool userLoaded) {
         loadScript(scriptName, userLoaded);
     });
-    connect(scriptManager.data(), &ScriptManager::reloadScript, [this](const QString& scriptName, bool userLoaded) {
+    connect(scriptManager.get(), &ScriptManager::reloadScript,
+            [this](const QString& scriptName, bool userLoaded) {
         loadScript(scriptName, userLoaded, false, false, true);
     });
 
diff --git a/libraries/script-engine/src/ScriptEngines.h b/libraries/script-engine/src/ScriptEngines.h
index 28fd0238bb..bab550a483 100644
--- a/libraries/script-engine/src/ScriptEngines.h
+++ b/libraries/script-engine/src/ScriptEngines.h
@@ -19,7 +19,6 @@
 #include <QtCore/QObject>
 #include <QtCore/QMutex>
 #include <QtCore/QReadWriteLock>
-#include <QtCore/QSharedPointer>
 #include <QtCore/QUrl>
 
 #include <SettingHandle.h>
diff --git a/libraries/script-engine/src/ScriptManager.cpp b/libraries/script-engine/src/ScriptManager.cpp
index 97ccd4a4fb..b523c7d059 100644
--- a/libraries/script-engine/src/ScriptManager.cpp
+++ b/libraries/script-engine/src/ScriptManager.cpp
@@ -133,7 +133,7 @@ static ScriptValue debugPrint(ScriptContext* context, ScriptEngine* engine) {
         ScriptContextPointer parentContext; // using this variable to maintain parent variable lifespan
         while (userContext && userContext->functionContext()->functionType() == ScriptFunctionContext::NativeFunction) {
             parentContext = userContext->parentContext();
-            userContext = parentContext.data();
+            userContext = parentContext.get();
         }
         QString location;
         if (userContext) {
@@ -211,7 +211,8 @@ ScriptManagerPointer scriptManagerFactory(ScriptManager::Context context,
 ScriptManagerPointer newScriptManager(ScriptManager::Context context,
                                       const QString& scriptContents,
                                       const QString& fileNameString) {
-    ScriptManagerPointer manager(new ScriptManager(context, scriptContents, fileNameString), &QObject::deleteLater);
+    ScriptManagerPointer manager(new ScriptManager(context, scriptContents, fileNameString),
+                                 [](ScriptManager* obj) { obj->deleteLater(); });
     ScriptEnginePointer engine = newScriptEngine(manager.get());
     manager->_engine = engine;
     return manager;
@@ -559,7 +560,7 @@ static ScriptValue createScriptableResourcePrototype(ScriptManagerPointer manage
     auto prototype = engine->newObject();
 
     // Expose enum State to JS/QML via properties
-    QObject* state = new QObject(manager.data());
+    QObject* state = new QObject(manager.get());
     state->setObjectName("ResourceState");
     auto metaEnum = QMetaEnum::fromType<ScriptableResource::State>();
     for (int i = 0; i < metaEnum.keyCount(); ++i) {
@@ -623,7 +624,7 @@ void ScriptManager::init() {
     _isInitialized = true;
     runStaticInitializers(this);
 
-    auto scriptEngine = _engine.data();
+    auto scriptEngine = _engine.get();
 
     // register various meta-types
     registerMIDIMetaTypes(scriptEngine);
@@ -693,7 +694,7 @@ void ScriptManager::init() {
     scriptEngine->registerFunction("console", "groupEnd", ConsoleScriptingInterface::groupEnd, 0);
 
     // Scriptable cache access
-    auto resourcePrototype = createScriptableResourcePrototype(qSharedPointerCast<ScriptManager>(sharedFromThis()));
+    auto resourcePrototype = createScriptableResourcePrototype(shared_from_this());
     scriptEngine->globalObject().setProperty("Resource", resourcePrototype);
     scriptEngine->setDefaultPrototype(qMetaTypeId<ScriptableResource*>(), resourcePrototype);
     scriptRegisterMetaType(scriptEngine, scriptableResourceToScriptValue, scriptableResourceFromScriptValue);
@@ -960,7 +961,7 @@ void ScriptManager::run() {
 
     emit releaseEntityPacketSenderMessages(true);
 
-    emit finished(_fileNameString, qSharedPointerCast<ScriptManager>(sharedFromThis()));
+    emit finished(_fileNameString, shared_from_this());
 
     // Don't leave our local-file-access flag laying around, reset it to false when the scriptengine
     // thread is finished
@@ -1117,7 +1118,7 @@ QUrl ScriptManager::resolvePath(const QString& include) const {
         auto contextInfo = context->functionContext();
         parentURL = QUrl(contextInfo->fileName());
         parentContext = context->parentContext();
-        context = parentContext.data();
+        context = parentContext.get();
     } while (parentURL.isRelative() && context);
 
     if (parentURL.isRelative()) {
@@ -1258,7 +1259,8 @@ ScriptValue ScriptManager::currentModule() {
     auto cache = jsRequire.property("cache");
     ScriptValue candidate;
     ScriptContextPointer parentContext;  // using this variable to maintain parent variable lifespan
-    for (auto context = _engine->currentContext(); context && !candidate.isObject(); parentContext = context->parentContext(), context = parentContext.data()) {
+    for (auto context = _engine->currentContext(); context && !candidate.isObject();
+         parentContext = context->parentContext(), context = parentContext.get()) {
         auto contextInfo = context->functionContext();
         candidate = cache.property(contextInfo->fileName());
     }
@@ -1808,10 +1810,10 @@ void ScriptManager::loadEntityScript(const EntityItemID& entityID, const QString
 
     auto scriptCache = DependencyManager::get<ScriptCache>();
     // note: see EntityTreeRenderer.cpp for shared pointer lifecycle management
-    QWeakPointer<ScriptManager> weakRef(sharedFromThis());
+    std::weak_ptr<ScriptManager> weakRef(shared_from_this());
     scriptCache->getScriptContents(entityScript,
         [this, weakRef, entityScript, entityID](const QString& url, const QString& contents, bool isURL, bool success, const QString& status) {
-            QSharedPointer<ScriptManager> strongRef(weakRef);
+            std::shared_ptr<ScriptManager> strongRef(weakRef);
             if (!strongRef) {
                 qCWarning(scriptengine) << "loadEntityScript.contentAvailable -- ScriptManager was deleted during getScriptContents!!";
                 return;
@@ -1929,7 +1931,7 @@ void ScriptManager::entityScriptContentAvailable(const EntityItemID& entityID, c
         return;
     }
     auto program = _engine->newProgram( contents, fileName );
-    if (program.isNull()) {
+    if (!program) {
         setError("Bad program (isNull)", EntityScriptStatus::ERROR_RUNNING_SCRIPT);
         emit unhandledException(_engine->makeError(_engine->newValue("program.isNull")));
         return; // done processing script
@@ -2337,7 +2339,7 @@ void ScriptManager::callEntityScriptMethod(const EntityItemID& entityID, const Q
         }
 
         if (callAllowed && entityScript.property(methodName).isFunction()) {
-            auto scriptEngine = engine().data();
+            auto scriptEngine = engine().get();
 
             ScriptValueList args;
             args << EntityItemIDtoScriptValue(scriptEngine, entityID);
@@ -2380,7 +2382,7 @@ void ScriptManager::callEntityScriptMethod(const EntityItemID& entityID, const Q
         }
         ScriptValue entityScript = details.scriptObject;  // previously loaded
         if (entityScript.property(methodName).isFunction()) {
-            auto scriptEngine = engine().data();
+            auto scriptEngine = engine().get();
 
             ScriptValueList args;
             args << EntityItemIDtoScriptValue(scriptEngine, entityID);
@@ -2420,7 +2422,7 @@ void ScriptManager::callEntityScriptMethod(const EntityItemID& entityID, const Q
         }
         ScriptValue entityScript = details.scriptObject;  // previously loaded
         if (entityScript.property(methodName).isFunction()) {
-            auto scriptEngine = engine().data();
+            auto scriptEngine = engine().get();
 
             ScriptValueList args;
             args << EntityItemIDtoScriptValue(scriptEngine, entityID);
diff --git a/libraries/script-engine/src/ScriptManager.h b/libraries/script-engine/src/ScriptManager.h
index fc3f8f3923..8e94b0ed88 100644
--- a/libraries/script-engine/src/ScriptManager.h
+++ b/libraries/script-engine/src/ScriptManager.h
@@ -16,10 +16,10 @@
 #include <atomic>
 #include <chrono>
 #include <functional>
+#include <memory>
 #include <unordered_map>
 #include <mutex>
 
-#include <QtCore/QEnableSharedFromThis>
 #include <QtCore/QFuture>
 #include <QtCore/QHash>
 #include <QtCore/QObject>
@@ -54,8 +54,8 @@ static const int DEFAULT_ENTITY_PPS_PER_SCRIPT = 900;
 class ScriptEngine;
 class ScriptEngines;
 class ScriptManager;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
-using ScriptManagerPointer = QSharedPointer<ScriptManager>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
+using ScriptManagerPointer = std::shared_ptr<ScriptManager>;
 using ScriptValueList = QList<ScriptValue>;
 
 Q_DECLARE_METATYPE(ScriptManagerPointer)
@@ -137,7 +137,7 @@ public:
  *     <em>Read-only.</em>
  * @property {Script.ResourceBuckets} ExternalPaths - External resource buckets.
  */
-class ScriptManager : public QObject, public EntitiesScriptEngineProvider, public QEnableSharedFromThis<ScriptManager> {
+class ScriptManager : public QObject, public EntitiesScriptEngineProvider, public std::enable_shared_from_this<ScriptManager> {
     Q_OBJECT
     Q_PROPERTY(QString context READ getContext)
     Q_PROPERTY(QString type READ getTypeAsString)
diff --git a/libraries/script-engine/src/ScriptProgram.h b/libraries/script-engine/src/ScriptProgram.h
index abfe0d2748..ae26abace6 100644
--- a/libraries/script-engine/src/ScriptProgram.h
+++ b/libraries/script-engine/src/ScriptProgram.h
@@ -15,12 +15,12 @@
 #ifndef hifi_ScriptProgram_h
 #define hifi_ScriptProgram_h
 
-#include <QtCore/QSharedPointer>
+#include <memory>
 
 class ScriptProgram;
 class ScriptSyntaxCheckResult;
-using ScriptProgramPointer = QSharedPointer<ScriptProgram>;
-using ScriptSyntaxCheckResultPointer = QSharedPointer<ScriptSyntaxCheckResult>;
+using ScriptProgramPointer = std::shared_ptr<ScriptProgram>;
+using ScriptSyntaxCheckResultPointer = std::shared_ptr<ScriptSyntaxCheckResult>;
 
 /// [ScriptInterface] Provides an engine-independent interface for QScriptProgram
 class ScriptProgram {
diff --git a/libraries/script-engine/src/ScriptValue.h b/libraries/script-engine/src/ScriptValue.h
index bafbf349f1..d5a057e0ad 100644
--- a/libraries/script-engine/src/ScriptValue.h
+++ b/libraries/script-engine/src/ScriptValue.h
@@ -15,10 +15,11 @@
 #ifndef hifi_ScriptValue_h
 #define hifi_ScriptValue_h
 
+#include <memory>
+
 #include <QtCore/QObject>
 #include <QtCore/QFlags>
 #include <QtCore/QList>
-#include <QtCore/QSharedPointer>
 #include <QtCore/QString>
 #include <QtCore/QVariant>
 
@@ -26,9 +27,9 @@ class ScriptEngine;
 class ScriptValue;
 class ScriptValueIterator;
 class ScriptValueProxy;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
 using ScriptValueList = QList<ScriptValue>;
-using ScriptValueIteratorPointer = QSharedPointer<ScriptValueIterator>;
+using ScriptValueIteratorPointer = std::shared_ptr<ScriptValueIterator>;
 
 /// [ScriptInterface] Provides an engine-independent interface for QScriptValue
 class ScriptValue {
diff --git a/libraries/script-engine/src/ScriptValueIterator.h b/libraries/script-engine/src/ScriptValueIterator.h
index 13ae8be74e..657bef6fbb 100644
--- a/libraries/script-engine/src/ScriptValueIterator.h
+++ b/libraries/script-engine/src/ScriptValueIterator.h
@@ -15,13 +15,14 @@
 #ifndef hifi_ScriptValueIterator_h
 #define hifi_ScriptValueIterator_h
 
-#include <QtCore/QSharedPointer>
+#include <memory>
+
 #include <QtCore/QString>
 
 #include "ScriptValue.h"
 
 class ScriptValueIterator;
-using ScriptValueIteratorPointer = QSharedPointer<ScriptValueIterator>;
+using ScriptValueIteratorPointer = std::shared_ptr<ScriptValueIterator>;
 
 /// [ScriptInterface] Provides an engine-independent interface for QScriptValueIterator
 class ScriptValueIterator {
diff --git a/libraries/script-engine/src/Scriptable.h b/libraries/script-engine/src/Scriptable.h
index 39d5974168..45669a111c 100644
--- a/libraries/script-engine/src/Scriptable.h
+++ b/libraries/script-engine/src/Scriptable.h
@@ -15,13 +15,13 @@
 #ifndef hifi_Scriptable_h
 #define hifi_Scriptable_h
 
-#include <QtCore/QSharedPointer>
+#include <memory>
 
 #include "ScriptContext.h"
 #include "ScriptValue.h"
 
 class ScriptEngine;
-using ScriptEnginePointer = QSharedPointer<ScriptEngine>;
+using ScriptEnginePointer = std::shared_ptr<ScriptEngine>;
 
 /// [ScriptInterface] Provides an engine-independent interface for QScriptable
 class Scriptable {
diff --git a/libraries/script-engine/src/qtscript/ScriptContextQtAgent.cpp b/libraries/script-engine/src/qtscript/ScriptContextQtAgent.cpp
index db888c3e99..e082272a63 100644
--- a/libraries/script-engine/src/qtscript/ScriptContextQtAgent.cpp
+++ b/libraries/script-engine/src/qtscript/ScriptContextQtAgent.cpp
@@ -21,7 +21,7 @@ void ScriptContextQtAgent::contextPop() {
     if (_prevAgent) {
         _prevAgent->contextPop();
     }
-    if (_engine->currentContext() == _currContext) {
+    if (_engine->currentContext() == _currContext.get()) {
         _currContext.reset();
         if (!_contextActive && !_contextStack.empty()) {
             _currContext = _contextStack.back();
@@ -50,7 +50,7 @@ void ScriptContextQtAgent::functionEntry(qint64 scriptId) {
         return;
     }
     if (!_currContext) {
-        _currContext = ScriptContextQtPointer(new ScriptContextQtWrapper(_engine, static_cast<QScriptEngine*>(_engine)->currentContext()));
+        _currContext = std::make_shared<ScriptContextQtWrapper>(_engine, static_cast<QScriptEngine*>(_engine)->currentContext());
     }
     Scriptable::setContext(_currContext.get());
     _contextActive = true;
diff --git a/libraries/script-engine/src/qtscript/ScriptContextQtAgent.h b/libraries/script-engine/src/qtscript/ScriptContextQtAgent.h
index 38e64ffc22..f23d82dc2b 100644
--- a/libraries/script-engine/src/qtscript/ScriptContextQtAgent.h
+++ b/libraries/script-engine/src/qtscript/ScriptContextQtAgent.h
@@ -12,8 +12,9 @@
 #ifndef hifi_ScriptContextQtAgent_h
 #define hifi_ScriptContextQtAgent_h
 
+#include <memory>
+
 #include <QtCore/QList>
-#include <QtCore/QSharedPointer>
 #include <QtScript/QScriptEngineAgent>
 
 #include "ScriptEngineQtScript.h"
@@ -22,7 +23,7 @@ class QScriptContext;
 class QScriptValue;
 class ScriptContextQtWrapper;
 class ScriptEngineQtScript;
-using ScriptContextQtPointer = QSharedPointer<ScriptContextQtWrapper>;
+using ScriptContextQtPointer = std::shared_ptr<ScriptContextQtWrapper>;
 
 class ScriptContextQtAgent final : public QScriptEngineAgent {
 public: // construction
diff --git a/libraries/script-engine/src/qtscript/ScriptContextQtWrapper.cpp b/libraries/script-engine/src/qtscript/ScriptContextQtWrapper.cpp
index 75172bed12..72f6ea41b1 100644
--- a/libraries/script-engine/src/qtscript/ScriptContextQtWrapper.cpp
+++ b/libraries/script-engine/src/qtscript/ScriptContextQtWrapper.cpp
@@ -43,16 +43,16 @@ ScriptValue ScriptContextQtWrapper::callee() const {
 }
 
 ScriptEnginePointer ScriptContextQtWrapper::engine() const {
-    return _engine->sharedFromThis();
+    return _engine->shared_from_this();
 }
 
 ScriptFunctionContextPointer ScriptContextQtWrapper::functionContext() const {
-    return ScriptFunctionContextPointer(new ScriptFunctionContextQtWrapper(_context));
+    return std::make_shared<ScriptFunctionContextQtWrapper>(_context);
 }
 
 ScriptContextPointer ScriptContextQtWrapper::parentContext() const {
     QScriptContext* result = _context->parentContext();
-    return result ? ScriptContextPointer(new ScriptContextQtWrapper(_engine, result)) : ScriptContextPointer();
+    return result ? std::make_shared<ScriptContextQtWrapper>(_engine, result) : ScriptContextPointer();
 }
 
 ScriptValue ScriptContextQtWrapper::thisObject() const {
diff --git a/libraries/script-engine/src/qtscript/ScriptEngineQtScript.cpp b/libraries/script-engine/src/qtscript/ScriptEngineQtScript.cpp
index c4a00188f1..ae76b2f627 100644
--- a/libraries/script-engine/src/qtscript/ScriptEngineQtScript.cpp
+++ b/libraries/script-engine/src/qtscript/ScriptEngineQtScript.cpp
@@ -777,7 +777,7 @@ ScriptValue ScriptEngineQtScript::newObject() {
 
 ScriptProgramPointer ScriptEngineQtScript::newProgram(const QString& sourceCode, const QString& fileName) {
     QScriptProgram result(sourceCode, fileName);
-    return ScriptProgramPointer(new ScriptProgramQtWrapper(this, result));
+    return std::make_shared<ScriptProgramQtWrapper>(this, result);
 }
 
 ScriptValue ScriptEngineQtScript::newQObject(QObject* object,
@@ -857,7 +857,7 @@ ScriptContext* ScriptEngineQtScript::currentContext() const {
         return nullptr;
     }
     if (!_currContext || _currContext->toQtValue() != localCtx) {
-        _currContext = ScriptContextQtPointer(new ScriptContextQtWrapper(const_cast<ScriptEngineQtScript*>(this), localCtx));
+        _currContext = std::make_shared<ScriptContextQtWrapper>(const_cast<ScriptEngineQtScript*>(this), localCtx);
     }
     return _currContext.get();
 }
diff --git a/libraries/script-engine/src/qtscript/ScriptEngineQtScript.h b/libraries/script-engine/src/qtscript/ScriptEngineQtScript.h
index d073ad9749..3d99f0a39c 100644
--- a/libraries/script-engine/src/qtscript/ScriptEngineQtScript.h
+++ b/libraries/script-engine/src/qtscript/ScriptEngineQtScript.h
@@ -16,12 +16,12 @@
 #ifndef hifi_ScriptEngineQtScript_h
 #define hifi_ScriptEngineQtScript_h
 
+#include <memory>
+
 #include <QtCore/QByteArray>
-#include <QtCore/QEnableSharedFromThis>
 #include <QtCore/QMetaEnum>
 #include <QtCore/QObject>
 #include <QtCore/QPointer>
-#include <QtCore/QSharedPointer>
 #include <QtCore/QString>
 
 #include <QtScript/QScriptEngine>
@@ -35,15 +35,15 @@ class ScriptContextQtWrapper;
 class ScriptContextQtAgent;
 class ScriptEngineQtScript;
 class ScriptManager;
-using ScriptEngineQtScriptPointer = QSharedPointer<ScriptEngineQtScript>;
-using ScriptContextQtPointer = QSharedPointer<ScriptContextQtWrapper>;
+using ScriptEngineQtScriptPointer = std::shared_ptr<ScriptEngineQtScript>;
+using ScriptContextQtPointer = std::shared_ptr<ScriptContextQtWrapper>;
 
 Q_DECLARE_METATYPE(ScriptEngineQtScriptPointer);
 
 /// [QtScript] Implements ScriptEngine for QtScript and translates calls for QScriptEngine
 class ScriptEngineQtScript final : public QScriptEngine,
                                    public ScriptEngine,
-                                   public QEnableSharedFromThis<ScriptEngineQtScript> {
+                                   public std::enable_shared_from_this<ScriptEngineQtScript> {
     Q_OBJECT
 
 public:  // construction
diff --git a/libraries/script-engine/src/qtscript/ScriptProgramQtWrapper.cpp b/libraries/script-engine/src/qtscript/ScriptProgramQtWrapper.cpp
index 11dba1417e..3a5b2ae68e 100644
--- a/libraries/script-engine/src/qtscript/ScriptProgramQtWrapper.cpp
+++ b/libraries/script-engine/src/qtscript/ScriptProgramQtWrapper.cpp
@@ -26,7 +26,7 @@ ScriptProgramQtWrapper* ScriptProgramQtWrapper::unwrap(ScriptProgramPointer val)
 
 ScriptSyntaxCheckResultPointer ScriptProgramQtWrapper::checkSyntax() const {
     QScriptSyntaxCheckResult result = _engine->checkSyntax(_value.sourceCode());
-    return ScriptSyntaxCheckResultPointer(new ScriptSyntaxCheckResultQtWrapper(std::move(result)));
+    return std::make_shared<ScriptSyntaxCheckResultQtWrapper>(std::move(result));
 }
 
 QString ScriptProgramQtWrapper::fileName() const {
diff --git a/libraries/script-engine/src/qtscript/ScriptValueQtWrapper.cpp b/libraries/script-engine/src/qtscript/ScriptValueQtWrapper.cpp
index 768ec41246..4eb32476ea 100644
--- a/libraries/script-engine/src/qtscript/ScriptValueQtWrapper.cpp
+++ b/libraries/script-engine/src/qtscript/ScriptValueQtWrapper.cpp
@@ -84,11 +84,11 @@ ScriptEnginePointer ScriptValueQtWrapper::engine() const {
     if (!_engine) {
         return ScriptEnginePointer();
     }
-    return _engine->sharedFromThis();
+    return _engine->shared_from_this();
 }
 
 ScriptValueIteratorPointer ScriptValueQtWrapper::newIterator() const {
-    return ScriptValueIteratorPointer(new ScriptValueIteratorQtWrapper(_engine, _value));
+    return std::make_shared<ScriptValueIteratorQtWrapper>(_engine, _value);
 }
 
 ScriptValue ScriptValueQtWrapper::property(const QString& name, const ScriptValue::ResolveFlags& mode) const {