docopt : Command-line interface description language
HTTPie : HTTPie—aitch-tee-tee-pie—is a command line HTTP client with an intuitive UI, JSON support, syntax highlighting, wget-like downloads, plugins, and more
pass : pass is a very simple password store that keeps passwords inside gpg2 encrypted files inside a simple directory tree residing at ~/.password-store. Th...
librosa : librosa is a python package for music and audio analysis. It provides the building blocks necessary to create music information retrieval systems.