Open-source implementation for .NET and Mono written in C#, licensed under Apache License 2.0. It relies on DLR (Dynamic Language Runtime). It supports only version 2.7, version 3 is currently being developped.

Differences with CPython:

• Tight integration with .NET Framework.
• Strings are Unicode by default.
• Does not support extensions for CPython written in C.
• Does not suffer from Global Interpreter Lock.
• Performance is usually lower, though it depends on tests.

Hello World

print "Hello World!"

You can also use .NET functions:

import clr
from System import Console
Console.WriteLine("Hello World!")

External links

• Official website
• GitHub repository