Code

PyPLE [License: BSD]

Python Persistent Logic Engine
License: BSD

AWSSigner.py

Amazon Web Services request signer for Python. Also works with Alexa Web Information Service (AWIS).
License: None (public domain)
View thread on Amazon Web Services Developer Connection
Download source

Spam Scalpel [obsolete]

Open source spam intelligence engine
License: GPL

Vazu for Python [obsolete]

Python class for sending free SMS text messages
License: BSD
Download source

US Patent Searches for Firefox [obsolete]

Firefox search plugins for searching patents at the US Patent and Trademark Office.
License: BSD
Add them to your browser
Note: Untested with recent versions of Firefox!