GZDoom for OS X

GZDoom for Mac OS X is a fork of GZDoom by Alexey Lysiuk (_mental_). The primary aim was to have a ZDoom port with OpenGL rendering on the Macintosh, but it has since obtained additional features. Since the release of GZDoom 2.2, this project is no longer maintained.

Features
In addition to all ZDoom and GZDoom features, GZDoom for OS X offers:
 * Rewritten OpenGL renderer
 * Support for loading the Xbox 360 IWADs from their diskfiles
 * post-processing
 * Automatic loading of the TNT: Evilution MAP31 fix patch
 * Automatic handling of Mordeth's MORGRAP0.WAD's lack of namespace markers

Some features introduced there were since backported to ZDoom and GZDoom, including:
 * Berserk indicator in the alternate HUD
 * Enhanced optional display of time in the alternate HUD
 * xBRZ rescaling filter (with explicit permission of the author).