Actor-based concurrent object framework for Ruby

Mutation testing for Ruby. AI writes your code. AI writes your tests. But who tests the tests?

A tiny 32 bit kernel written in Rust

The complete solution for Ruby command-line executables

A system for processing messages from RabbitMQ.

A small PEG based parser library. See the Hacking page in the Wiki as well.

Flay analyzes code for structural similarities. Differences in literal values, variable, class, method names, whitespace, programming style, braces vs do/end, etc are all ignored.

Spinach is a BDD framework on top of Gherkin.

Translations with speech synthesis in your terminal as a ruby gem

A simple, ORM agnostic, Ruby >=2.2 compatible date validator for Rails, based on ActiveModel.

The Ruby Language Toolkit

Static analysis Lint-type tool to improve your OO Ruby code

Zonebie prevents bugs in code that deals with timezones by randomly assigning a zone on every run

Static analysis and style linter for Ruby code.

A Facebook-style, RESTful Batch API

Tinder is a Ruby API for interfacing with Campfire, the 37Signals chat application.

A ruby library to talk to Arduino without having to burn programs repeatedly to the board

Rack-based interactive console (à la Rails console) for your web application's front-end

Nickel extracts date, time, and message information from naturally worded text.

HyperClient is a Ruby Hypermedia API client.

[DEPRECATED] This project is deprecated in favor of travis-ci/worker

An experimental Atari™ 2600 emulator, 100% written in Ruby

Whittle: A small LALR(1) Parser in Pure Ruby (Not a Generator)

Positionless model sorting for Rails

Clojure-like Lisp on Rubinius

SuperCollider client for Ruby. It's currenty being rewritten. Hang on!

A Ruby library for interacting with system MIDI services.

Small framework to simplify process-to-process communication.

An assembler compiler and bytecode virtual machine implemented in ruby for a made up CPU.