MAME
Frontends, Ports, AdvanceMAME, CinemArcade.com, Gordon's MAME ROM Info Page, MAME, MAME CD Covers, MAME Lang, MAME Merge, MAME Ring, MAME Targets, Mame Testing Project
Ace
A freeware emulator for Windows dedicated to Capcom system. Sources are also available.
E++ - A portable object-oriented emulator
Emulates Space Invaders, Phoenix, Centipede and the home computer Sinclair ZX Spectrum (aka Timex-Sinclair 2000).
HiVE : High Velocity Emulator
A Win32 program which emulates classic arcade games such as Galaga and PacMan.
Kawaks
A freeware emulator for Windows. Emulates Neo Geo and CPS 1/2 Systems.
Nebula
A freeware NeoGeo and CPS1/2 emulator for Windows. [English/Spanish]
Official Raine Page
Raine is an emulator, it emulates some M68000 and M68020 arcade games and is mainly focused on Taito and Jaleco games hardware.
Shark
An arcade game emulator for the Win95/98 operating system.
VAntAGE - Vertical Antiquated Arcade Game Emulator
Written to be as small and fast as possible (to keep the cost of the host PC to a minimum) and to run the arcade games 'as intended'.