Comment Encryption (Score 1) 445
I have so many I use a master password list written in a simple text document that is in two places. My main machine and a flash drive both protected by Truecrypt. The flash drive actually has a small binary on it so the computer I use it on does not have to have Truecrypt installed on it for me to use it. It supports Windows, Macintosh, and Linux.
http://www.truecrypt.org/