QuickEncrypt
- A shareware utility provides drag and drop encryption/decryption of files and folders.
- http://www.dejal.com/quickencrypt/

Fairly Good Privacy
- A text-encryption program that can be used to send encrypted messages to recipients. This is considered a low security product.
- http://www.securemac.com/fgp.php

Fortify for Netscape
- Upgrades Netscape Communicator to 128-bit encryption.
- http://www.fortify.net/download_main.html

Warlord Software
- The maker of Tresor, a file and folder encryption tool for Mac. Offers a newsletter, downloadable demo, product registration, support, and bug reporting.
- http://www.warlord.li

PGP Freeware
- A security program distributed by MIT that allows users to send information securely using two-key encryption.
- http://web.mit.edu/network/pgp.html

Mac GNU Privacy Guard
- GnuPG Mac OS X port the open source OpenPGP client.
- http://macgpg.sourceforge.net/