Emu Loader
MAME frontendVery well designed frontend for MAME developed by Ciro Consentino. Many features - Get it now! Note that to build from source, you need to have Borland's Delphi application development environment. There used to be a "lite" version, but the last version of that is very outdated.
Author's website: http://www.mameworld.net/emuloader/