DEmul - DEmul is a Sega Dreamcast emulator able to play commercial games.
AmpShell - AmpShell is a DOSBox front-end for Windows.
Redream - Redream is a work-in-progress Dreamcast emulator, enabling you to play your favorite Dreamcast...
Terminal Launch V - For those that want a clean, simple fast emu frontend.
Roms Mania - A working online resource for roms.
DBGL - DBGL is a free, open source, multiple frontends for DOSBox.