Yabause is a Sega Saturn emulator under GNU GPL. It currently runs on FreeBSD, GNU/Linux, Mac OS X, Windows, Dreamcast, and Wii.

Thanks to http://www.dcemu.co.uk and http://www.tehskeen.com for the news.

http://sourceforge.net/project/showfiles.php?group_id=89991&package_id=94504&release_id=643996