I'm a developer in Pittsburgh who works on various opensource/free projects in my free time (in addition to my daily job) -- The project I mostly focus on right now is Xonotic, with which I am one of the core developers and contribute most of my free time to.
Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux. Xonotic is a direct successor of the Nexuiz Project. The...