I'm looking for full-featured PIM software that can be run from a USB thumb drive. I don't like entering data in a palmtop, and am almost always at a computer when I need to do so. However, I work as a consultant and often use others' computers, making it difficult to install software. The natural solution is to have the software and data on the thumb drive. The software DOES need to have the ability for me to export the contacts database into a form that Palm Desktop can import. I pretty much only need to use my Zire for phone number lookup. I print out calenders and task lists on a regular basis.
I have found a couple candidates, but neither is full-featured. They are BitPal and EssentialPIM.