Common Development and Distribution License (CDDL) Version 1.0. Millions of development hours worth of code and over 1,600 patents are being contributed to the open source community.
(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