By RobertHBMAME contains homebrews and hacks not found in the regular MAME.
Available in 32 and 64 bits, command-line and GUI versions. For Windows XP and later.
By AlphaMAMEUI, formerly MAME32, is the GUI version of MAME. Originally authored in 1997 by Chris Kirmse, it was the first port of MAME to the Windows platform. MAMEUI is currently in maintenance mode with no active development taking place. The 64-bit version is still compiled and released when there is no breakage with the core.