davlib.py
Provides client-side access to a DAV server. DAV is a protocol for remote web-site authoring and management. [Open Source, Python license]

ID3.py
A simple Python module for retrieving and setting ID3 tags on MP3 compressed audio files through an object-oriented interface. [Open Source, GPL]

WConio (Windows CONsole I/O)
TurboC conio.h style console support for Python under Win32. [Public Domain]

tarfile
A pure Python module for reading and writing .tar and tar.gz files. [Open Source, BSD-like]

PyObjC
Allows developer to transparently message objective-c objects from Python.

Pexpect
A pure Python module for spawning child applications; controlling them; and responding to expected patterns in their output. It works like Don Libes' Expect. [Open source, Python Software Foundation License]

Maurer, Dieter - Python Projects
where.py - returns information about the sequence of calls leading to the calling function in the form of a sequence of tuples (function,file,lineno), PyAudioCD for Linux, TreeWidget, PyXPath, WeakDicts - addressing CPython's problems with cyclic references, addContentTable to HTML documents, XSL-Pattern modules.

mxDateTime
Date and Time types for Python. [Open Source]

Sisyphus
A module that simplifies running Python stuff as cron jobs. [Open Source, Python license]

Universal Serial Port Python Library
A multi-platform pure-Python module to access serial ports, which currently works on Linux and Windows. [Open Source, GPL]

Python Chess Module
A Python module which understands the rules of chess and can adjudicate a game, verifying if moves are correct. [Open Source, GPL]

pygame
A set of Python extension modules designed for writing games. The core of pygame is wrapped on top of the SDL library. [Open Source, LGPL]

The Snack Sound Toolkit
Module for basic sound handling (sound card and disk I/O); includes primitives for sound visualization, e.g. waveforms and spectrograms. [Open Source, GPL]

PyUnit
A standard, proven, simple and elegant framework for writing unit tests for Python software. [Open Source, Python license]

ExpectPy
An extension for a Python-feel to the Expect library. [Open Source, LGPL]

txObject ATK
Contains the following parts: Object Library, IO/Timers, Threads, Inter-Process/Distributed Communication. [Open Source, GPL]

Java-Python Extension
A seamless, complete, and efficient integration of Java and standard Python (C Python). JPE provides Java access to Python's native extension, and Java's Swing to Python developers. [Open Source, MPL]

Grouch
A system for describing and enforcing a Python object schema. [Open Source, Python license]

log4p
The Logging Toolkit For Python, modeled after the Java toolkit log4j (http://www.log4j.org). [Open Source, IBM Public License]

Xoltar Toolkit
Utility modules, including functional programming support, lazy expressions and data structures, and thread pools. [Open Source, LGPL]

Orange
A free, component-based, public domain data mining software, which includes a range of preprocessing, modelling and data exploration techniques. [Open Source, GPL]

Win32all
Extension modules for Windows 9x/NT/2K that include COM support, WinAPI calls, ODBC and the PythonWin IDE.

pyrepl
A replacement for readline for use from Python with better multi-line editing. [Open Source, Python-style]

The ReportLab Toolkit
A PDF generation library. [Open source, BSD-like]

config
Module allows implement a hierarchical configuration scheme for Python applications.

pytables
A hierarchical database package designed to efficiently manage very large amounts of data. [Open Source, BSD]