decompyle
- A service to decompile Python bytecode to readable Python source files.
- http://www.crazy-compilers.com/decompyle/

bridgekeeper
- A Perl to Python source code conversion service.
- http://www.crazy-compilers.com/bridgekeeper/

Pythonware
- Developers of the PythonWorks IDE, and useful modules such as the Python Imaging Library and XML-RPC implementation.
- http://www.pythonware.com/

opensourcexperts.com - Python Solution Providers
- An extensive of Individual Consultants and Companies providing Development and Support services for Python.
- http://www.opensourcexperts.com/Index/index_html/Python/index.html

Xellsoft
- Specialize in Python programming technology and object oriented databases, develop custom software and offer consulting in the area of internet, data communication, technical and scientific programming.
- http://www.xellsoft.com/

ReportLab
- Authors of PDFgen, for generating professionally formatted printable documents on the fly.
- http://www.reportlab.com/

Vorras
- A software development and consulting firm specializing in developing internet messaging applications using Python.
- http://www.vorras.com/

ActiveState's PythonDirect
- Enterprise-class support contracts for Python.
- http://www.activestate.com/

Orbtech
- They offer Python programming expertise and are specialized in Python training, consulting and custom software development.
- http://www.orbtech.com/