For full, incremental, compressed and encrypted backups or archives
Open source file encryption software
cross-platform, encryption application
C++ cryptographic library (modern hash functions, ciphers, KDFs)
cross-platform (Java) file encryption and archiving tool
Tiny front end to hcrypt.exe from project page Hcrypto
An encryption tool for creating file archives
All-purpose Encryption and Security Adaptation
TurboPower LockBox 2 & 3 Cryptographic Library for Delphi
A free "on-the-fly" transparent disk encryption program for PC & PDAs.