1. Klok for time management
Import from Exchange and then sync with Exchange. Inexpensive. Reports useful. Our IT team absolutely loves it! (lets just say they are on the busy side)
2. How to manage Blackberry application permissions
Blackberry OS was designed from the bottom up to be more secure. This article gives you more insight, from a user perspective, on how to set up and manage applications to be as secure as possible.
3. BrowserShots.org: Wondering what your web page looks like under various browsers and OSs?
Save yourself a _ton_ of time with this useful tool. Does not include debugging.
4. Computer Forensic tools: a whole slew of free tools that can help out when you have to do a deep forensics investigation on a machine.
That was a useful tips!