Direct 3D/Open GL FPS Counter

[skynet]

Does anyone know of any program/hack that will allow you to display the FPS of any Open GL or Direct 3D Program?
-Thanks

[spigidygak]

Most games have a command tag that will display the fps. Not sure of an actual utility that does this for all games.

[sbp]

http://www.fraps.com/ measures direct3d fps.