Supposedly, IronPython runs as fast as the C-based implementation of Python-2.4, if not faster. The company claims that IronPython can run 1.8x faster than Python-2.4 right now.

The release candidate for IronPython 1.0 brings support for the Python dynamic language to the Common Language Infrastructure.

Microsoft is moving two of its development languages -- IronPython and IronRuby -- as well as the company's Dynamic Language Runtime (DLR) to an Apache open-source license, company officials ...

Standing somewhat in contrast to the open source licenses that are typically applied to Python-related technologies, the Release 1.0 Production version of IronPython is available under Microsoft's ...