RetroArch is a frontend for emulators, game engines and media players.
Versatile Commodore Emulator
Run Windows applications on Linux, BSD, Solaris, and Mac OS X
A multi-purpose emulation framework
MultiSEGA emulator system
Create your own Atari tapes
Software development for 4Mb portable, using Z80 CPU and AA batteries
a multiplatform, full-featured GameBoy classic emulator
Transfer disks and disk images between the Apple II and the real world
Teo is an emulator of the Thomson TO8 microcomputer
Builds of "FUSE" emulator with my own mods
Emulator of Timex FDD3000
Binary Modular DataFlow Machine (BMDFM)
Archive of the Amiga emulator UAE
Amiga Emulator (UAE) for AROS
Full Smart Card support for Wine
Dynamips on MinGW