Debugging tool for opengl

Hey guys, I work on Linux platform and i use C, C++ for coding with Opengl. I wanted to know what are debugging tools available apart from gdb ?

If you’re after OpenGL specific debugging/profiling tools, here’s a few:

The only one I’ve used much is gDEBugger (only used the stand-alone Windows version) which is a pretty neat tool, but AMD CodeXL + NVidia’s NSight for Visual Studio / Eclipse are fairly recently updated, so probably have more in-depth analysis.