2. Docopt.rCommand-line interface description language for R (http://docopt.org)
3. Docopt.nimCommand line arguments parser that will make you smile (port of docopt to Nim)
6. Docopt.hsA command-line interface description language and parser that will make you smile
7. Docopt.goA command-line arguments parser that will make you smile.
12. Docopt.rbParse command line arguments from nothing more than a usage message
13. DocoptsShell interpreter for docopt, the command-line interface description language.
16. docopt.swiftA command-line interface description language and parser that will make you smile http://docopt.org/
17. docoptPythonic command line arguments parser, that will make you smile