From the extension resource using ResEdit: Aaron+Plus is an extension that changes visual aspects of your Mac.  It's kind of like an accessory to ~Aaron.  To use this file, place it in the Extensions folder and then restart your...

RadiusWare disk image from 1990 including Radius Math 1.5, Radius Accelerators 2.9, and Radius Displays 4.1 with installers.  Per the Readme file these versions are compatible with System 7 (accelerators need the right ROMs for this to work,...

System Error Patch is a system extension designed to let you override system errors.  If a system error is encountered while System Error Patch is in RAM, your Macintosh will beep three times and then go to the Finder.

AlphaTrecker is an extension that plays Amiga MOD music files in the background while you work on your Mac.  It works OK, but the MOD files I tried were playing slower on some portions of the tune.  It does not seem related to the CPU...

MacPuke INIT plays a vomit sound whenever you eject a floppy disk. "Make your Mac Puke!!!" By Dan Green  

SimAnt Cheater is a system extension which adds an extra menu to SimAnt and lets you access all the 'Easter Eggs' that I know about. Version 1.1 fills out the question marks from the earlier release, and adds a few new cheats. To work,...

System Extension MacOS9 Plus is a collection of extensions, controlpanels, contextual menu and control strip modules which add, remove, or change things in your MacOS9. most files in this collection are in an already-installed mode exploded...

NoFinder is a 7.0 only application which displays the processes currently executing in your system.  To bring a process to the front you can double click on a process name.  This utility also allows you to Terminate and launch processes.

Accessibility & Disibility tools for Mac OS versions 9 and earlier taken from the download.info.apple.com FTP server before it was closed. Full contents of the download...

StartupMooV is a system extension that allows you to select a QuickTime movie which will play every time the extension is loaded at startup time.  To select/change the movie, hold down the option key while the extension is loading. You will...