Calice32 This is by the author of BeGameboy and BePCEngine. It emulates Capcom CPS-1 and CPS-2 games plus the QSound from ZN-1 and ZN-2 games. It also emulates some of Sega's System-16 based games. The original DOS port is no longer supported.
Retrocade Nice interface and although everything is covered by MAME it is far more efficient and takes much less of a system to run it. For example, I am informed that Retrocade can run Galaga with full sound on a 486/33 but MAME requires a Pentium 200.