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.
Apple II Oasis - A shareware Apple //e emulator for Windows. Includes a disk image manager and an Apple II to PC data transfer utility.
AppleCE - An Apple II emulator for Windows CE-based Pocket PC devices.
casaGS - Site hosting the Apple IIgs emulators XGS-DOS for MS-DOS and KEGS-OSX for Mac OS X.
Catakig - Mac-hosted emulator of the Apple ][, ][+, and //e. Rationale, screenshots and downloads.
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.
iGS-Mac - An Apple IIgs emulator for PowerPC and higher-end 68K Macintoshes. Based on XGS and formerly known as XGS-Mac.
KEGS32 - An Apple IIgs emulator for Win32 based on KEGS.
KEGS - Kent's Emulated GS - An Apple IIgs emulator for Linux, Unix/X11, Win32 and Mac OS X. Source code is available.
KEGS/SDL - A version of the KEGS Apple IIgs emulator that uses the cross-platform SDL multimedia library.