SegaEMU Freeware emulator for Windows. An emulator project that hopes to one day emulate all existing sega systems. http://www.atani-software.net/html/projects/semu.shtml

Kega A freeware 32X, Game Gear, Master System, Mega Drive / Genesis, SC3000, Sega CD / Mega CD, and SG1000 emulator for Windows, by KGen author Steve Snake. http://www.eidolons-inn.net/tiki-index.php?page=Kega

Double Dutch Designs Limited Arcade & computer emulators for the Playstation (1 and 2) and Dreamcast. http://www.ddutch.plus.com/