TOSBOX homepage:
A shareware emulator for DOS.
http://www.geocities.com/tosbox/
WACKE:
Atari 400/800/XL/XE emulation for the PowerMac.
http://www.ctaz.com/~jlfenton/Wacke.html
Rainbow:
Shareware Atari 400/800/800XL/130XE/5200 emulator for MacOS and
Win32.
http://www.chrislam.co.uk/
The CTH Emulator:
An Atari 8-bit emulator that supports Winsock 1, OSS Supercarts and
has better Sparta Dos support.
http://cth.dtdns.net/Emulator/CTH_Emulator.html
Atari++:
An open source 130XL, 400, 400XL, 800, 800XL, and 5200 emulator for
Unix and Windows.
http://www.math.tu-berlin.de/~thor/atari++/
Atari800:
An open source 800, 800XL, 130XE and 5200 emulator for DOS, Linux,
TOS, Unix, Windows, and Windows CE.
http://atari800.sourceforge.net/
Atari 800 Emulator for the Mac:
Macintosh port of David Firth's Atari800 emulator.
http://www.serve.com/derekl/atari/atari_emu.html
Atari800MacX:
MacOS X port of the Atari800 emulator.
http://members.cox.net/atarimac/
Atari800Win:
Atari800 port for Win32
http://www.cris.com/~Twist/atari800win/
Atari800Win PLus:
Windows port of Atari800 based on the original Atari800Win v2.5c
sources.
http://atariarea.histeria.pl/PLus/index_us.htm