Many Python programmers report substantial productivity gains and feel the language encourages the development of higher quality, more maintainable code. The app runs on Windows, Linux/Unix, macOS, OS/2, Amiga, Palm Handhelds, and Nokia mobile phones.The app has also been ported to the Java and .NET virtual machines. Python 64-bit is distributed under an OSI-approved open-source license that makes it free to use, even for commercial products.