http://grc.com/ (Shields Up)
Steve Gibson's Shields Up service tests the security of your computer's connection to the Internet.

Vault is a utility that allows you to organise random bits of information and notes under topics and sub topics that you create.

Chrono Logic is a handy reminder/scheduling program.

To check out the above utilities and more go to http://www.personalmicrocosms.com. The program's author, Eric Bergman-Terrell, has written a whole bunch of other goodies that you might also find interesting.

TClockEx.exe (72k)
Are you always floating your mouse cursor over the Windows tray clock down in the lower right corner of your screen to find out the date. Tclock is a great little program that replaces the Windows tray clock with one that's fully customizable. The image shows Tclock running on a computer, showing the date and time, but you can design your own.. The download is 455k since it includes a setup routine, but tclockex.exe is only 72k.

Ad-aware scans your computer's memory, registry, and hard drives for spyware components and allows you to remove them from your system.

This firewall package is free for individual use.

http://www.zonelabs.com