I have long known that there are a lot of emulators available to run on the Mac. That is the area I found the most interesting on the Emulation Wiki. However there are also sections for PC DOS/Windows, PC Linux, Other Computers, Consoles and Handhelds.
For example on a calculator you can emulate Chip48, Chip83, TI-83, ChipLib, TI-92, CASIO FX-9860 and more.
On the Mac there are emulators for Consoles: Atari, Coleco, Dreamcast, NES, Playstation and more.
For Handhelds: Atari Lynx, Game Boy, Nintendo DS, Palm OS and more.
Computers: Acorn, AIM, other Macs, Apple, Lisa, Coleco, Sinclair and more.
Check it all out here: http://www.emuwiki.com
