com.badlogic.gdx
Interfaces 
Application
ApplicationListener
Audio
Files
Graphics
Input
Input.TextInputListener
InputProcessor
LifecycleListener
Net
Net.HttpMethods
Net.HttpResponse
Net.HttpResponseListener
Preferences
Screen
Classes 
ApplicationAdapter
Game
Gdx
Graphics.BufferFormat
Graphics.DisplayMode
HttpParametersUtils
Input.Buttons
Input.Keys
InputAdapter
InputMultiplexer
Net.HttpRequest
Net.HttpStatus
StreamUtils
Version
Enums 
Application.ApplicationType
Files.FileType
Graphics.GraphicsType
Input.Orientation
Input.Peripheral
Net.Protocol