Monitor is a utility for the Macintosh which allows you to see the level of activity taking place within your computer. Monitor presents a number of different types of information including CPU utilization, memory usage and disk space availability. Much of the information presented by Monitor is displayed using graphs.
 
NativeChecker
How do you know the application is for 68K application or PowerPC native application? With NativeChecker, you can easily know that! Just drag & drop the file into NativeChecker and at once you will see the result dialog.
 
TattleTech
TattleTech is a utility that provides complete information about your computer, PCI slots, applications, control panels, extensions, fonts and software. Basically if you want to know anything about your computer this is the program for you.
 
TechTool
TechTool is a renowned program to help when other utilities have come up short. TechTool has the ability to rebuild your desktop, zap you pram, and analyze your system for damaged system files. All this combined with your system profile and an excellent help file which explains in plain English how to utilize it's options make this a must have for your utilities folder.