vbsms+ - Open source emulator for Windows. - http://olaf.efewe.com/vbsms+.php
MesaDX - A freeware emulator for Windows. - http://home.comcast.net/~mesadx/
Osmose - Open source emulator for Linux and Windows. - http://bcz.emu-france.com/
SMS Plus - Open source emulator for DOS. Ports are available for Acorn, BeOS, Dreamcast, GamePark32, Linux, MacOS, PlayStation2, Saturn, Windows, and Xbox. - http://cgfm2.emuviews.com/smsplus.php
SMaSher - A freeware emulator for Windows. - http://www.eidolons-inn.net/tiki-index.php?page=Triton
Emukon - A freeware emulator for Windows. - http://emukon.kontechs.de/
Saya RX-SMS - A freeware emulator for Windows. - http://imperiopso.brinkster.net/sayarx/eng/
SMS Power - Offers current news on ROM releases as well as downloads. - http://smspower.speedhost.com/
DumpMasters - Offers a large download section. - http://www.emucamp.com/dump_masters/
Calypso - Freeware emulator for DOS. - http://www.tel.uva.es/~jdelmen/
MasterGear - Commercial emulator for Win32 and freeware emulator for FreeBSD, Linux, MacOS, OS/2, OSF/1, Solaris, SunOS and WinCE. - http://fms.komkon.org/MG/
Past-O-Rama - Freeware emulator for Win32. - http://www.system16.com/pastorama/
Massage - Freeware emulator for DOS. - http://www.enterspace.org/world/
Massacre Homepage - Contains many different versions of this Emulator. - http://www.emucamp.com/massacre/