Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D.
License: Open Source
SDL is a versatile, cross-platform library great for 2D games and simpler applications, while Microsoft DirectX is a high-performance, Windows-only API focused on 3D graphics and game development. SDL offers ease of use and flexibility, while DirectX provides advanced features and optimizations for AAA games.