Bug-fix-only libev port of shadowsocks
Complete and free implementation of the OpenPGP standard
Open source disk encryption with strong security for the Paranoid
Encrypted volumes through command line
High Security Encrypting File System
A family of small-state CSPRNGs and Stream Ciphers
A family of FLEA-inspired CSPRNGs and Stream Ciphers
SES brings back the uncrackable onetime pad, with a digital twist.
A free "on-the-fly" transparent disk encryption program for PC & PDAs.