USB drives have become very popular lately you can do just about anything with
them, this is a good list that covers most common computer functions. The applications
will run off USB drives and require no installs:

Adminstration:

I didn't find this site untill about page 20 argg... much nicer than mine not sure if they update it I am going to try and get this page up to par and I will keep adding progs as I find them!!