Twoapple
- Open source emulator for Linux written in the D programming language.
- http://code.google.com/p/twoapple/

OSXII
- A freeware //e emulator for Mac OS X utilizing Cocoa and OpenGL.
- http://apple2.intergalactic.de/

Catakig
- Mac-hosted emulator of the Apple ][, ][+, and //e. Rationale, screenshots and downloads.
- http://catakig.sourceforge.net/

AppleWin
- An open source Apple //e emulator for Windows.
- http://applewin.berlios.de/

Chris, Mark and Terry's Apple ][ Home Page
- Information on the Apple ][ including links to emulators and disk images.
- http://apple.duke.net/

ActiveGS
- An ActiveX-based Apple IIgs emulator created by members of the Free Tools Association. Also, FTA demos, games and tools that run in the emulator.
- http://www.freetoolsassociation.com/

casaGS
- Site hosting the Apple IIgs emulators XGS-DOS for MS-DOS and KEGS-OSX for Mac OS X.
- http://www.casags.net/

Virtual ][
- A shareware ][, ][+, and //e emulator for MacOS X.
- http://www.xs4all.nl/~gp/VirtualII/

The Apple IIgs Gaming Memory Fairway
- Apple IIgs game information, disk images and memorabilia.
- http://www.inwards.com/~fairway/

PalmApple
- An Apple II emulator in development for the Palm OS.
- http://palmapple.sourceforge.net/

KEGS - Kent's Emulated GS
- An Apple IIgs emulator for Linux, Unix/X11, Win32 and Mac OS X. Source code is available.
- http://kegs.sourceforge.net/

Dapple Emulator Series
- Features Dapple and NDapple, two open source ][, ][+, and 64K //e emulators for DOS, and Dapple2 an open source 128K //e emulator for DOS.
- http://sourceforge.net/projects/dapple/

PsiApple
- An Apple ][+ emulator for the Psion Series 5 palmtop.
- http://www.fasterlight.com/hugg/projects/psiapple.html

Applelet
- An Apple ][ emulator written in Java.
- http://www.fasterlight.com/hugg/projects/applelet.html

Bernie ][ The Rescue
- An Apple IIgs emulator for Power Macintosh.
- http://www.bernie.gs/Bernie/

iGS-Mac
- An Apple IIgs emulator for PowerPC and higher-end 68K Macintoshes. Based on XGS and formerly known as XGS-Mac.
- http://www.openprojects.rarcoa.com/~justmike/XGS-Mac/

AppleUni
- An Apple ][+ emulator for DOS.
- http://dr.ea.ms/

Sara
- Preliminary version of an Apple /// emulator for Macintosh.
- http://www.blackcatsystems.com/software/sara.html

XGS/32
- An Apple IIgs emulator for Windows 9x/NT/2000 based on XGS.
- http://xgs32.emucamp.com/

Rich Skrenta's Apple II emulator in C
- The C source for an Apple II emulator.
- http://www.skrenta.com/a2/