APITrace, the versatile open-source utility for tracing OpenGL calls from games and other programs, is now at version 3.0 with the introduction of several useful features...
An absolutely amazing tool for developers. I wish we had this sort of robustness in other domains, like graphics and audio. Well, we sort of do -- Wireshark is almost the same as apitrace for the network -- but it's "heavier" as it requires drivers.