Tagged singleton
- AudioServer
- CameraServer
- ClassDB
- DisplayServer
- EditorInterface
- Engine
- EngineDebugger
- GDExtensionManager
- Geometry2D
- Geometry3D
- IP
- Input
- InputMap
- JavaClassWrapper
- JavaScriptBridge
- Marshalls
- NativeMenu
- NavigationMeshGenerator
- NavigationServer2D
- NavigationServer3D
- OS
- Performance
- PhysicsServer2D
- PhysicsServer2DManager
- PhysicsServer3D
- PhysicsServer3DManager
- ProjectSettings
- RenderingServer
- ResourceLoader
- ResourceSaver
- ResourceUID
- TextServerManager
- ThemeDB
- Time
- TranslationServer
- WorkerThreadPool
- XRServer