Shelldon is an expressive DSL for build interactive command-line apps (REPLs)with minimal effort. It supports all kinds of fun features, like config/history management, error handling, subcommands, subshells, and more!

TinyQ is a message broker with a simple JSON based protocol

Ultra Light Graphs - Text editor friendly markup language for creating simple graphs.

Pull interface to Open edX XQueue

An unofficial ruby library for quickly parsing 23andme raw data files into a plain Ruby structures for quick processing and analysis.