Essential Utilities
GeekTool - "a PrefPane (System Preferences module) for Panther or Jaguar to show system logs, unix commands output, or images (i.e. from the internet) on your desktop (or even in front of all windows)" (87 visits)
http://projects.tynsoe.org/en/geektool/
Magical Jelly Bean Keyfinder v1.41 - a freeware utility that retrieves your Product Key (cd key) used to install windows from your registry (60 visits)
http://www.magicaljellybean.com/keyfinder.shtml
My sysadmin toolbox - "Every administrator has a set of software tools that he just can't live without. These are the utilities that you install as soon as you log into a new machine, to help make day-to-day tasks a little easier. Here are my top 10 tools." (94 visits)
http://www.linux.com/article.pl?sid=05/10/26/215206
NirSoft - provides a unique collection of small and useful freeware utilities (54 visits)
http://nirsoft.net/
ProfileTool - simplifies some common Windows desktop administration tasks that Windows doesn't let you do itself (44 visits)
http://www.itpartners.co.nz/profiletool/
PWGen for Windows - Generator for cryptographically strong passwords (108 visits)
http://pwgen-win.sourceforge.net/
TreeSize Free V1.77 - Every hard disk is too small if you just wait long enough. TreeSize Free tells you where precious space has gone to. (55 visits)
http://www.jam-software.com/freeware/index.shtml
Windows Sysinternals - "The Sysinternals web site was created in 1996 by Mark Russinovich and Bryce Cogswell to host their advanced system utilities and technical information and Microsoft acquired Sysinternals in July, 2006. Whether you’re an IT Pro or a developer, you’ll find Sysinternals utilities to help you manage, troubleshoot and diagnose your Windows systems and applications." (62 visits)
http://www.microsoft.com/technet/sysinternals/default.mspx
WinPatrol - (32 visits)
http://www.winpatrol.com/