BizHawk is a multi-system emulator written in C#
A cross platform lightweight single-header simple-to-use library
Codam's own fixed, functioning alternative of the miniLibX
A multi-platform library for OpenGL, OpenGL ES, Vulkan, etc.
Borland-style conio implementation for MinGW/Visual Studio
A minimalist and cross platform System Shock source port
Simple graphics, keyboard and mouse library with a C interface