Windows X's Live
It transforms your Windows 7/Vista/XP user interface to look like Mac OS X Lion.
nullDC is the best Sega Dreamcast emulator available for Windows.
Yabause is a Sega Saturn emulator under GNU GPL and support booting games.
A software emulator primarily for 8-bit Sega hardware.
blueMSX 2.8.1 is an emulator to run MSX programs under Windows.
Gens is a win32/unix Sega Genesis / Sega CD / Sega 32X emulator.
Sacred Logic Software
SSEmu - Sega - Saturn Emulator on the Windows/DOS platform.
Kega Fusion is a great free multi-console emulator for the SEGA fans.
Spicy Pixel, Inc.
Generator is an open source emulator designed to emulate the Sega Genesis.
Gens32 is an emulator for: SEGA Genesis, Mega-Drive.
Lion Icon Pack is a transformation pack to make your icons look like Lion icons.
The Device Emulator contains the emulator technologies featured in Windows CE.
Q-emuLator is a software emulator of the QL running in Windows and Mac.
Agat Emulator is an Apple ][ and Agat 7/9 emulator for Windows.
Playstation 2 Emulator by Click-2U is the only all in one emulator.
SoftPerfect Connection Emulator (SCE) is a WAN environment emulator.