Agar provides a base GUI framework and a standard set of widgets from which graphical applications can be built which run natively under X11, Windows, MacOS, SDL and others. It takes advantage of texture and GPU acceleration wherever available. Agar can also attach to an existing framebuffer, SDL or OpenGL context and operate as a self-contained window-manager.
It includes a standard library of general-purpose widgets, and is also designed to be extended externally. New widgets can be...
The CRT X-Y library (libcrtxy) is meant to be used by video game programmers who wish to create games in the style of vectorgraphics arcade games of the late 1970s and early 1980s. (Tempest, Star Wars, Battle Zone, Star Castle, etc.)