The UWIN package allows UNIX applications to be built and run on Windows XP/2000/NT/ME/98/95 with few, if any, changes necessary. UWIN source and binaries are available under the open source Common Public License 1.0.
(because old games never die), uses SDL to emulate a 386, an S3/Trio video even Tandy, a Sound Blaster Pro, the PC speaker, Tandy 3-sound, CMS/GameBlaster, Disney Sound Source, and MIDI under DOS