Tinker Tool (Available from
http://www.versiontracker.com/ ) allows for some powerfunctions that you can usually do only from OS9, root, or the Terminal, to be done from your account.
Also if you're interested, 3DOSX is a cool, albeit a little buggy, 3D system navigation system.
Menu Meters allows you to see your data rates, available memory, and HD usage.
Thats all for now.
TEG