igagis 

C++ testing framework

C++ command line arguments parsing library

C++ GUI library

C++ CSS DOM library

C++ time library

C++ network library

C++ puu parser library

raster image C++ library

OpenGL renderer for morda C++ GUI library

JSON parser and DOM C++ library

C++ audio library

C++ audio mixer library

C++ tml parser library

OpenGL renderer for ruis C++ GUI library

Intrusive C++ GUI library

C++ vector graphics library