I use as a password manager Whisper. It is for me one of the bests. Home page for this aplocation is: http://www.ivory.org/whisper.html. But on the http://www.ivory.org are more good aplications. I know there is install package for Whisper. But if you install it and make your own file with passwords you can copy complete folder to USB key or USD drive and aplication works fine. I use it more than 3 years and i am satisfied. Hope it helps you also.