The original fork of Wolf4SDL has been the most utilized source port among the community for Wolfenstein 3D mods for well over a decade, initially developed by Moritz "Ripper" Kroll then contributed and maintained by other members over the years including Chris Chokan, Andy_Nonymous and most recently AryanWolf3D.
Fork Features
Runs on many modern systems (Including Windows 10, Linux, and… Dreamcast).
Bug fixes to many known issues with the game, while still retaining the classic style of gameplay Wolf3D is known for.
Wolf4SDL’s source can be compiled for multiple versions of both Wolfenstein 3D and Spear of Destiny.
Improvements to sounds, including multichannel digital sound support.
Common modding features pre-implemented (Including Parallaxing Skies and Shading). Requires enabling in source code.
Code is formatted and organized to match the DOS source code, so modders could transition easily from DOS.
Core Engine
Source Repo