Bug-fix-only libev port of shadowsocks
C++ cryptographic library (modern hash functions, ciphers, KDFs)
SCSI Tape Encryption Manager
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.
ISC lets you encrypt & decrypt text and files of any type up to 4GB