OpenGL Tools
You have found the way to Tools on OpenGL:
BuGLe - A tool for debugging applications that use OpenGL.
FRAPS - FPS (Frames Per Second), video capture, and screen capture for DirectX and OpenGL applications.
gDEBugger - OpenGL debugger - Commercial OpenGL debugger
glsldevil - OpenGL GLSL Debugger - A tool for debugging the OpenGL shader pipeline, supporting GLSL vertex, fragment, and geometry shaders. Includes screenshots, documentation and downloads.
The SphereXP - 3D desktop replacement for Microsoft Windows XP Help build the largest human-edited directory on the web.