PyChart
- A Python library for creating high quality Encapsulated Postscript, PDF, PNG, or SVG charts. [Open source, GPL]
- http://home.gna.org/pychart/

VideoCapture
- A Win32 Python Extension for Accessing Video Devices (e.g. a USB WebCam, a TV-Card, ...) [Open-Source, LGPL]
- http://videocapture.sourceforge.net/

pyGDChart
- A Python interface to the GDChart chart creation library. [Open Source, BSD-like]
- http://www.nullcube.com/software/pygdchart.html

Ming
- A C library for generating SWF ("Flash") format movies. Ming includes a Python wrapper for the library. [Open Source, LGPL]
- http://ming.sourceforge.net/

JpGraph
- An object-oriented presentation graphics library. [Open Source, GPL]
- http://metagram.webreply.com/

Python Computer Graphics Kit
- Modules for creating 3D computer graphics images, focusing on Pixar's RenderMan interface. [Open Source, BSD-like]
- http://cgkit.sourceforge.net/

VPython
- A free, open-source module for producing real-time 3D scenes with Python. Includes a modified version of IDLE. [Open Source, BSD-like]
- http://www.vpython.org/

Lightflow Rendering Interface
- The Lightflow Rendering Interface is an object oriented programming interface to synthetic rendering, which provides a common environment and description language to treat light distribution in three dimensional spaces. Also provides a Python API to the r
- http://www.lightflowtech.com/

PyOpenGL
- The binding layer between Python and OpenGL. [Open Source, BSD-like]
- http://pyopengl.sourceforge.net/

PyInventor
- A Python wrapper for SGI's OpenInventor library.
- http://www.cs.uit.no/~olemb/software/pyinventor/

The MayaVi Data Visualizer
- A free, easy to use scientific data visualizer. [Open Source, GPL]
- http://mayavi.sourceforge.net/

PythonWare Image Library (PIL)
- Provides image processing functionality and supports many file formats. [Open Source, BSD-like]
- http://www.pythonware.com/products/pil/index.htm

Python TWAIN Module
- Provides an interface to the Microsoft Windows TWAIN sub-system. [Open Source, GPL]
- http://twainmodule.sourceforge.net/

gracePlot.py
- This module provides interactive 2-D plotting capabilities via the Grace package. [Open Source, Python license]
- http://www.idyll.org/~n8gray/code/

Gnuplot.py
- A Python interface to the gnuplot plotting program. [Open Source, GPL]
- http://gnuplot-py.sourceforge.net/

gdmodule
- Python support for GD graphics library. [Open Source, BSD-like]
- http://newcenturycomputers.net/projects/gdmodule.html

Biggles
- A 2D scientific plotting package for Python, geared toward the production of publication-quality plots. [Open Source, GPL]
- http://sourceforge.net/projects/biggles/