^{Logo by Daniel "Tormentor667" Gimmer}

GZDoom-GPL is a GPL-compliant fork of GZDoom.

• id Software for Doom
• Randi Heit for ZDoom
• Graf Zahl for GZDoom
• LavenderMoon for the GPL relicense codebase
• Magnus Norddahl and Rachael Alexanderson for QZDoom's software renderer

• General Public License version 3 (GPLv3)
  • GZDoom-GPL
• DUMB License
  • foo_DUMB
• General Public License version 2 (or later)
  • Doom
• nvidia License
  • FXAA code
• GZDoom License (LGPLv3)
  • OpenGL renderer
• Lesser General Public License version 2.1
  • Timidity
• Paul Hsieh Derivative License
  • The hash function in c_dispatch.cpp
• Revised BSD License
  • ZDoom
• zlib License
  • zlib