The SphereXP The SphereXP: 3D desktop replacement for Microsoft Windows XP (Tools) http://www.hamar.sk/sphere/
NVIDIA NVIDIA: OpenGL related tools for developers. (Tools) http://developer.nvidia.com/view.asp?PAGE=opengl_tools
FRAPS FRAPS: FPS (Frames Per Second), video capture, and screen capture for DirectX & OpenGL applications (Tools) http://www.fraps.com/
OpenGL Switcher OpenGL Switcher: A small Windows utility for switching OpenGL driver DLLs back and forth. (Tools) http://home.earthlink.net/~heavensrage/ogls.html
BuGLe BuGLe: A tool for debugging applications that use OpenGL. (Tools) http://bugle.sourceforge.net/