Complete and free implementation of the OpenPGP standard
Extremely fast non-cryptographic hash algorithm
Bug-fix-only libev port of shadowsocks
AWS Encryption SDK for C
Encrypted volumes through command line
XOR Encryptor for Windows
A family of FLEA-inspired CSPRNGs and Stream Ciphers
A free "on-the-fly" transparent disk encryption program for PC & PDAs.
EaseFilter OnAcess File Encryption SDK