A curated list of awesome awesomeness

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An uroboros program with 100+ programming languages

A simple, Git-powered wiki with a local frontend and support for many kinds of markup and content.

A privacy-aware, distributed, open source social network.

📷 git-based selfies for software developers

Official repository for Citation Style Language (CSL) citation styles.

Ruby FFI

**Grit is no longer maintained. Check out libgit2/rugged.** Grit gives you object oriented read/write access to Git repositories via Ruby.

An experiment in publishing code and words about code on a small scale.

Contributed Rack Middleware and Utilities

🏆Open Source Security Foundation (OpenSSF) Best Practices Badge (formerly Core Infrastructure Initiative (CII) Best Practices Badge)

A Ruby-based parsing DSL based on parsing expression grammars.

a work-in-progress Ruby compiler, written in Ruby and C++

Performance Benchmark of top Github languages

A web server agnostic rack middleware for defining and applying rewrite rules. In many cases you can get away with Rack::Rewrite instead of writing Apache mod_rewrite rules.

Provides an irb session to a running ruby process.

Ronin is a Free and Open Source Ruby Toolkit for Security Research and Development. Ronin also allows for the rapid development and distribution of code, exploits, payloads, etc, via 3rd-party git …

UNMAINTAINED: See celluloid/celluloid#779 - Actor-based distributed objects in Ruby based on Celluloid and 0MQ

A two-dimensional, hexagonal programming language.

A pipe to browser utility

DISCONTINUED - Delorean lets you travel in time with Ruby by mocking Time.now

Ruby implementation of http://goessner.net/articles/JsonPath/

Plugin to run checks on your Rails 2.x/3.x to check for obvious upgrade points on the path to 3.0

The latest features of Ruby backported to older versions.

A plugin for Sinatra to provide a DSL extension for using Thin for asynchronous responses

a small RSpec clone

Console for Rack based ruby web apps

Spin speeds up your Rails testing workflow by preloading your Rails environment.

Scheme in as little Ruby and as much Scheme as possible. Supports macros, continuations, tail recursion and lazy evaluation.