For full, incremental, compressed and encrypted backups or archives
Encrypted volumes through command line
Powerful webdav client and sync tools with client-side AES encryption
The safest way to store private data in untrusted (cloud) environments
Leet is CCEx's software application for on-the-fly encryption (OTFE).
Free, cross platform, portable password manager.
CrococryptQuerl is a web-based file encryption & transfer tool
JCryptor is an encrypting tool based on the Caesar-cipher.
A free "on-the-fly" transparent disk encryption program for PC & PDAs.