The only ROMS you can download legally are available at MameDev.org.
These have been generously made available by the copyright owners.
Homebrew roms that have been released by the owners are allowed. Examples:
Frog Feast roms
These will run in MisfitMAME.
Gaelco, the makers of World Rally, have released the roms. The MAME community is extremely grateful for the effort by Gaelco to preserve such an arcade classic.
Do NOT request any other ROMS or make links to them!! (see the Rules for more info)
Command-line, unmodified MAME
SDLMAME for the G4 mac
SDLMAME for Ubuntu
MameUI (previously known as MAME32)
DDEmame and MAME plus! plus!
Old versions that are no longer being updated:
CaNAME and JMAME
Derivatives that emulate other games:
MisfitMAME (emulates hacked, homebrew and other nonMAME roms)
Non-MAME Arcade Emulators:
Final Burn Alpha
These do not work with every version of MAME.
Story.dat and Mamescore.ini
OLD MAME VERSIONS
You can get old versions of MAME and MAME32 here, and here.
Updated info over HERE.
Edited by Robert, 05 September 2012 - 09:31 AM.
Fixed some of the bad links