Python is often compared to Tcl, Perl, Scheme or Java and runs on many brands of UNIX, on Windows, OS/2, Mac, Amiga, and many other platforms. The most recent version of Python is available for free from this website. Also included are Python 2.3.3 Documentation (released December 19, 2003), the interpreter program that reads Python programs and carries out their instructions, tutorials for non-programmers and programmers, some examples and sample code, information for developers, and links to the programming community user groups. "The Python implementation is copyrighted but freely usable and distributable, even for commercial use."