Simple and Fast Multimedia Library is a cross-platform software development library designed to provide a simple application programming interface to various multimedia components in computers. - SFML

• How writing a computer game got me jobs at Amazon and Google

Tetris (SFML - c++)

GLFW

GLFW is a free, Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan application development. It provides a simple, platform-independent API for creating windows, contexts and surfaces, reading input, handling events, etc.

Sprites

• Sprite DB
• The Spriters