Relic's homeworld source code, newer version via http://homesource.nekomimicon.net/sourceforum/
seems down... https://web.archive.org/web/20170819032915/http://homesource.nekomimicon.net/ https://web.archive.org/web/20170919140954/http://homesource.nekomimicon.net:80/sourceforum/
Latest SVN version?