I use OpenGL::Simple pretty heavily, since I found it much easier to get running than SDL::OpenGL, and POGL didn't exist when I started out. Unfortunately, it's pretty bare-bones -- as in, it only wraps a subset of the OpenGL API. (OpenGL has lots and lots of extensions, some of which are necessary for doing anything interesting these days. But they are unevenly supported by drivers and hardware.) I have had to add several dozen API entries myself, and fix up a few others.

On the other hand, I fully intend to switch to POGL as soon as I find some time.