ActivePython 2.5

ActivePython is the industry-standard Python distribution, available for Windows, Linux, Mac OS X, Solaris, AIX and HP-UX.

Developers worldwide rely on ActivePython's completeness and ease-of-use, while corporate users protect their infrastructure and stay competitive with quality-assured ActivePython business solutions.
ActivePython is 100% compatible with the reference distribution of Python. Code tested with ActivePython will run on any Python installation that has the appropriate extensions installed.
ActiveState also provides business solutions for dynamic languages, including enterprise distributions and OEM licensing, that offer guaranteed stability, expert support, unparalleled quality and cost-efficiency to organizations.