Python

Python is a dynamic object-oriented programming language that can be used for many kinds of software development. It offers strong support for integration with other languages and tools, comes with extensive standard libraries, and can be learned in a few days.
Python URL:http://www.python.org/


IronPython is a new implementation of the Python programming language running on .NET. It supports an interactive console with fully dynamic compilation.
IronPython UR:http://www.codeplex.com/Wiki/View.aspx?ProjectName=IronPython

Jython is an implementation of the high-level, dynamic, object-oriented language Python written in 100% Pure Java, and seamlessly integrated with the Java platform. It thus allows you to run Python on any Java platform.
Jython URL:http://www.jython.org/Project/