Python

Homepage: http://python.org/

A general purpose scripting language.

Python is available for multiple platforms:
 * .NET (via IronPython)
 * Android (via Jython or Python for Android or Kivy)
 * iOS (via PyObjC or Kivy)
 * JavaScript (via Pyjs or Brython)
 * JVM (via Jython)
 * Linux
 * Mac OS X
 * Objective C (via PyObjC)
 * Windows 7
 * Windows mobile (via IronPython)