You might probably know, Steam is a digital distribution, digital rights management, multiplayer and communications platform developed by Valve Corporation. But you’ll most certainly know, it is used for distributing games and related media online. Recently, Valve announced Steam client for Linux, thereby officially expanding their reach outside of the primarily Windows PC world.
Android SDK is a development kit targeted at developing apps for mobile devices running Android. With the Android SDK, one can develop, debug, and test apps via an in-built emulator. The emulator can emulate the expected behaviour of the Android OS on many platforms including Linux, Windows, and Mac.