libpng http://www.libpng.org/pub/png/pngcode.html
libjpeg http://www.ijg.org/
zlib http://www.zlib.net/
OpenGL http://www.opengl.org/
Direct3D
Grwin
GLIBW32(Graphics Library for Win32)
WndowsAPIのGDI
GD
ImageMagick
SDL http://www.libsdl.org/
libmpeg http://libmpeg2.sourceforge.net/ MPEG2
ffmpeg http://www.ffmpeg.org/
libogg http://xiph.org/downloads/ ogg-vorbis
libtiff http://www.libtiff.org/ TIFF Library and Utilities
lame http://sourceforge.net/projects/lame/files/lame/ mp3 encoder
libaiff http://aifftools.sourceforge.net/libaiff/ http://sourceforge.jp/projects/sfnet_aifftools/ Audio IFF
GNU regex
GRETA
SRegex
WndowsAPIの関数
rexp
ASCII Madness JLib Basic Graphics For Your Console Applications ConsoleUtil
マルチプラットフォームでGUIアプリケーションを開発できる
wxWidgets http://www.wxwidgets.org/
Qt http://qt.nokia.com/title-jp/
boost http://www.boost.org/ ※C++
bullet/physics http://bulletphysics.org/wordpress/ 物理演算