Project Titan An open source emulator for Windows. Only the Source Code is available. http://titan.emuhq.com/

Saturnin A freeware emulator for Windows. http://saturnin.consollection.com/

SegaSaturn Emulator A freeware emulator for Windows. http://home.h01.itscom.net/phantasy/ssf/

A-Saturn Freeware emulator for Windows. http://f-ts.bias.ne.jp/~azuco/enter.htm

Yabause An open source emulator for Linux, MacOS X, and Windows. http://sourceforge.net/projects/yabause/

Semus An open source emulator for Windows. http://www.cyd.liu.se/users/~micol972/site/semus/