mxCrypto
- Wrappers for OpenSSL's cryptographic algorithms. [Open Source]
- http://www.egenix.com/files/python/mxCrypto.html

M2Crypto
- A Python interface to OpenSSL's crypto, SSL and S/MIME functionality. [Open Source, BSD-like]
- http://wiki.osafoundation.org/bin/view/Projects/MeTooCrypto

CryptKit
- A Cryptographic Toolkit for Python, which, among others, provides access to the SHA256, AES and ellipcitic curves algorithms. [Open Source, BSD-like]
- http://sourceforge.net/projects/cryptkit/

ezPyCrypto
- A wrapper around the PyCrypto library to provide a high-level, easy-to-use interface to encryption technology. [Open Source, GPL]
- http://www.freenet.org.nz/ezPyCrypto/

auth-modules
- A module collection for password authentication purposes and user database management. [Open source]
- http://www.chrisarndt.de/en/software/python/#auth

Python Cryptography Toolkit
- A collection of cryptographic algorithms and protocols, implemented for use from Python. [Open Source, Python license]
- http://www.amk.ca/python/code/crypto.html

Python mcrypt wrapper
- Python-mcrypt is a comprehensive Python interface to the mcrypt library, which provides a uniform interface to several symmetric encryption algorithms. [Open Source, LGPL]
- http://sourceforge.net/projects/python-mcrypt

Pisces
- Python implementation of the SPKI Certificate standard. [Open Source, Python License]
- http://www.cnri.reston.va.us/software/pisces/

Python OpenSSL Wrappers
- A set of comprehensive wrappers for Python of the OpenSSL libraries. POW will provide a 'slim' interface which will still enable Python developers to fully utilise OpenSSL. [Open Source, BSD-like]
- http://sourceforge.net/projects/pow

Advanced Encryption Suite
- Implementations of the SHA256, AES and several CSPRNGs in pure Python. [Open Source, BSD-like]
- http://sourceforge.net/projects/pyaes/

pyOpenSSL
- Python interface to the OpenSSL library. [Open Source, LGPL]
- http://pyopenssl.sourceforge.net/