Essentia : Open-source library and tools for audio and music analysis, description and synthesis
Cliquet : Cliquet is a toolkit to ease the implementation of HTTP microservices, such as data-driven REST APIs.
Leaflet : A Modern, Lightweight Open-Source JavaScript Library for Interactive Maps
docopt : Command-line interface description language. docopt helps you define interface for your command-line app, and automatically generate parser for it.
FoxDot : FoxDot is an easy-to-use Python library that creates an interactive programming environment and talks to the powerful sound synthesis engine, called S...
The Kartograph map generator has just one method, which is there to generate SVG maps (surprise).