ZDoom

Home: http://zdoom.org/, https://sourceforge.net/projects/zdoom/
Inspiration: Doom, Doom II, Heretic, Hexen
State: mature
Download: https://zdoom.org/downloads, https://github.com/coelckers/gzdoom/releases, https://sourceforge.net/projects/zdoom/files/
Platform: Windows, Linux, macOS
Keyword: remake, "content commercial (?) + original required", first-person, shooter
Code repository: https://github.com/coelckers/gzdoom.git, https://git.code.sf.net/p/zdoom/gzdoom
Code language: C, C++, ZenScript
Code license: GPL-3.0
Developer: Jan Engelhardt, Randy Heit

Maybe ZDoom and GZDoom should be splitted.

Building