Atari

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

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

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

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

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

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

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

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

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

TOSBOX homepage - A shareware emulator for DOS.
www.geocities.com/tosbox/

WACKE - Atari 400/800/XL/XE emulator for MacOS.
www.geocities.com/jlfenton65/computer.html