FIDO® Certified StrongKey FIDO Server (SKFS)
UFONet - Denial of Service Toolkit
Secure mail + Tor gateway
CCryption is a simple opensource text encryption program
Linux based collaborative password manager with strong encryption.
ImpraStorage provided a private imap access to store large files
this simple program implements the Vigenere cipher in python
Extended Visual Cryptography Schemes in Python
pythonic kerberosish ticket system: easy to use, easy to subclass