Atari800
- An open source 800, 800XL, 130XE and 5200 emulator for BeOS/x86, DOS, Linux, TOS, Unix, Windows, and Windows CE.
- http://sourceforge.net/projects/atari800/

Atari800Win PLus
- Windows port of Atari800 based on the original Atari800Win v2.5c sources.
- http://atariarea.krap.pl/PLus/index_us.htm

Atari800MacX
- A Mac OS X port of Atari800.
- http://www.atarimac.com/atari800macx.php

Atari 800 Emulator for Windows
- A step-by-step instruction for downloading and playing classic games in Atari800Win PLus.
- http://ktchang.cnc.net/emulator/using_emulator.shtml

A8E
- A freeware 800XL emulator for Windows/SDL.
- http://www.zerstoerung.de/

EMUAPC
- A commercial 130XE, 400, 65XE, 800, 800XL emulator for DOS and Windows.
- http://www.komires.com/gb/page4.html

Rainbow/Mac
- A MacOS X port by Richard Bannister of Rainbow.
- http://www.bannister.org/software/rainbow.htm

Atari++
- An open source 130XL, 400, 400XL, 800, 800XL, and 5200 emulator for Unix and Windows.
- http://www.math.tu-berlin.de/~thor/atari++/

Rainbow
- Shareware Atari 400/800/800XL/130XE/5200 emulator for MacOS and Win32.
- http://www.chrislam.co.uk/