Agar
Cross Platform GUI Toolkit
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 X, 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...