Daru (Data Analysis in RUby) is a library for analysis, manipulation and visualization of data. Daru-view is for easy and interactive plotting in web application & IRuby notebook. It can work in frameworks e.g. Rails, Sinatra, Nanoc and hopefully in others too.

Group related classes together. No more silos.

Etcd v3 Ruby Client

Allows you to define a phase on Active Record migrations and provides rake tasks for running only migrations tagged with a certain phase

Checks that application's database, sidekiq etc are responding.

Provides a command-line tool that generates Java, Python or Ruby code to run the tests.

js_from_routes helps you by automatically generating path and API helpers from Rails route definitions, allowing you to save development effort and focus on the things that matter.

Fast background processing framework for Ruby and RabbitMQ

Lowkiq

Easily deploy any Jekyll or Octopress site using S3, Git, or Rsync.

View docs for Octopress and its plugins

A cross-platform Pact verification tool to validate API Providers. Used in the pact-js-provider project to simplify development

Peatio Blockchain Plugin for Rubykube

Organise your Docker containers with muscle and intelligence

Allows the *_type field in the DB to be an integer rather than a string

Ember's Module Unification brought to Rails

A true Bayesian rating system with scope and cache enabled.

A Racc-based Ruby parser and generator for SQL statements

This tunnels HTTPS to HTTP and configures itself using Pow's config.

ULID for Rails