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...