(Updated October 31, 2010)
Here's a list of most of the files available from this site. Some of these files are described in more detail on the 68K Software and System 6 Hell pages.
I haven't included most of the unofficial (and possibly unstable) releases of emulators that our forum members have put together. You can find those over here.
Important Note: In (old versions of?) Firefox for Windows, you might have to right click and “save as” to download files with the .HQX extension. By default, Firefox attempts to display the files rather than download them.
Basilisk II for Windows 1.0-Pre JIT R5 (01.May.2006)
Basilisk II for Windows build 142 (a much older version from 2001)
Basilisk II for Windows build 94 (a much older version from 1999)
Basilisk II for OS X
Emmac 2.0.4 (probably won't work)
Executor 2.1pr16 (serial: 99991004 authentication: n9rk57f369byp)
Kegs32 version 091 (an apple IIgs emulator)
Mini vMac for Windows 3.0.4
PearPC .5pre (redscorp build)
SheepShaver for Windows 2.3-Pre (14.May.2006)
SheepShaver for Mac OS X
Worm 0.91
Basilisk II Graphical Disk Image Chooser (for the Mac OS X port)
Cider Press 3.0 (for use with kegs)
CopyROM(for use with this guide)
DMG2ISO (includes a graphical frontend)
GTK +2 Runtime (needed for SheepShaver and Basilisk II for Windows)
HFVExplorer 1.31 (useful for every emulator)
iMac Update 1.1 (useful with this guide)
Mac OS ROM Update 1.0 (useful with this guide)
PearPC Control Panel (used with the “redscorp” version of PearPC)
PearPC Control Panel (used with the official 0.4.0 version of PearPC)
PearPC Control Panel Source (from the official 0.4.0 version)
SDL 1.2 Libraries (needed for SheepShaver and Basilisk II for Windows)
SheepShaver Prefs Editor (for the Mac OS X port)
Stuffit 9 For Windows (possibly useful for setting up SoftMac and Mini vMac)
Tomeviewer (for use with this guide)
Bootable 6 GB disk image for PearPC (essential)
Disk Tools 8.5 (ppc) (a bootable disk image for use in SheepShaver
GS/OS disk image (a bootable GS/OS disk image, for use in Kegs)
GS/OS installation disks (GS/OS installation disks, for use in Kegs)
Network Access Disk 7.5 (possibly useful for setting up SoftMac)
System 7 boot disk (very basic System 7 boot disk)
Appearance Manager 1.0.4 (necessary for some software)
Acrobat Reader 3.02 (final 68k version)
Apple HD SC Setup 7.3.5 (possibly helpful when setting up SoftMac)
Decor 3.0.4
Disinfectant 3.71
Disk Copy 6.3.3
DragThing 2.9
English Text-to-Speech 1.41 (contains all 68K Macintalk versions)
DropStuff 5.5 (Needed by some stuffit archives)
Hypercard Player (This is a HARD DISK IMAGE that can be mounted in any emulator)
Kaleidoscope 2.31 (and get an Aqua scheme)
PrintToPDF 2.4.4
Stuffit Expander 5.5 (Great for use in Basilisk II and SoftMac)
Stuffit Expander 4.0.1 (Great for use in Mini vMac)
Type Resolve 2.0.1
Online English Handbook 1.2.1
Corel WordPerfect 3.5
FullWrite Professional 3.06 (use the serial number FREE-33333-33333)
More 3.1 (an outliner)
iCab 2.99 (best 68k internet browser)
Mac IRC (68K) 0.9.6
Netscape Communicator 4.0.8
Public Address "stripped" (includes a useful Telnet client)
Graphic Convertor 4.1 (final 68k version)
MpegDec 3.11 (68k MP3 player)
Asterax 1.2
Doom Shareware
Duke Nukem 3D Shareware
Glider (versions 2.02b and 3.0)
Klondike (versions 2.0, 2.1, 3.6, 4.0, 5.1)
Space Junkie
System's Twilight
ThinkAhead+ (on a hard disk image)
Duke Nukem 3D PPC Demo
Flash 7 (might be useful with Classilla)
Lightway Text 4.17e
Mozilla 1.3.1