KeePass is an open-source password safe. Passwords can be stored in highly-encrypted databases, that can be unlocked with one master password or key file.
FreeOTFE: A free 'on-the-fly' transparent disk encryption program for PCs and PDAs. Using this software, you can create one or more "virtual disks" on your PC or PDA - anything written to these disks is automatically, and securely, encrypte...
Excellent, fully capabile software encryption solution for multiple platforms (Linux, Windows and OSX). Only complicaiton is it requires administrative privilidges to load, so tricky to setup for users without admin privlidges.