Ruby on Rails

help to kill N+1 queries and unused eager loading

Thor is a toolkit for building powerful command-line interfaces.

Annotate Rails classes with schema and routes info

a code metric tool for rails projects

Code smell detector for Ruby

Generate Entity-Relationship Diagrams for Rails applications

Ruby toolkit for the GitHub API

It's a small library to provide the I18n translations on the Javascript. It comes with Rails support.

[DISCONTINUED ] Attributes on Steroids for Plain Old Ruby Objects

Rails authentication with email & password.

A Ruby code quality reporter

Interactor provides a common interface for performing complex user interactions.

Debugging in Ruby

File Attachment toolkit for Ruby applications

Your Rails variables in your JS

Easy activity tracking for models - similar to Github's Public Activity

Feature flippers.

Multithreaded, Postgres-based, Active Job backend for Ruby on Rails.

A Ruby Library for dealing with money and currency conversion.

A collection of awesome Ruby Gems for Rails development.

Quick automated code review of your changes

Ruby production code coverage collection and reporting (line of code usage)

A PhantomJS driver for Capybara

Timeouts for popular Ruby gems

An awesome asynchronous event-driven reactor for Ruby.

A Ruby job queue that uses PostgreSQL's advisory locks for speed and reliability.

Magical authentication for Rails 3 & 4

Data mapping and persistence toolkit for Ruby

Ruby Tests Profiling Toolbox