TrueCrypt – Free Open-Source On-The-Fly Disk Encryption Software for Windows XP/2000 and Linux
I think this is GREAT software. The ability to make encrypted disks anywhere on your computer (or USB memory device) is a boon to security nuts like me. And the encryption that’s available from this software is very, very good. (As an added bonus, it’s open source – so you can be sure the government hasn’t put any secret back doors in there!)
