Title

Actionmailer

Email composition, delivery, and receiving framework (part of Rails).

MIT


Actionpack

Web-flow and rendering framework putting the VC in MVC (part of Rails).

MIT


Actionview

Rendering framework putting the V in MVC (part of Rails).

MIT


Activejob

Job framework with pluggable queues.

MIT


Activemodel

A toolkit for building modeling frameworks (part of Rails).

MIT


Activerecord

Object-relational mapper framework (part of Rails).

MIT


Activesupport

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework.

MIT


Arel

Arel Really Exasperates Logicians Arel is a SQL AST manager for Ruby

MIT


Ast

A library for working with Abstract Syntax Trees.

MIT


Awesome_nested_set

An awesome nested set implementation for Active Record

MIT


Awesome_print

Pretty print Ruby objects with proper indentation and colors

MIT


Axlsx

Excel OOXML (xlsx) with charts, styles, images and autowidth columns.

MIT


Axlsx_rails

A simple rails plugin to provide an xlsx renderer using the axlsx gem.

MIT


Babel-source

Babel JS source

MIT


Babel-transpiler

Ruby Babel JS Compiler

MIT


Bcrypt

OpenBSD's bcrypt() password hashing algorithm.

MIT


Binding_of_caller

Retrieve the binding of a method's caller. Can also retrieve bindings even further up the stack.

MIT


Bootstrap-sass

Twitter's Bootstrap, converted to Sass and ready to drop into Rails or Compass

MIT


Browser-timezone-rails

Sets the browser timezone within rails

MIT


Builder

Builders for MarkUp.

MIT


Bulk_insert

An helper for doing batch (single-statement) inserts in ActiveRecord

MIT


Bundler

The best way to manage your application's dependencies

MIT


Callsite

Caller/backtrace parser with some useful utilities for manipulating the load path, and doing other relative things.

MIT


Cancancan

Simple authorization solution for Rails.

MIT


Capybara

Capybara aims to simplify the process of integration testing Rack applications, such as Rails, Sinatra or Merb

MIT


Childprocess

This gem aims at being a simple and reliable solution for controlling external programs running in the background on any Ruby / OS combination.

MIT


Choice

Choice is a command line option parser.

MIT


Climate_control

Modify your ENV easily with ClimateControl

MIT


Cocaine

A small library for doing (command) lines

MIT


Cocoon

gem that enables easier nested forms with standard forms, formtastic and simple-form

MIT


Coderay

Fast syntax highlighting for selected languages.

MIT


Coffee-rails

CoffeeScript adapter for the Rails asset pipeline.

MIT


Coffee-script

Ruby CoffeeScript Compiler

MIT


Coffee-script-source

The CoffeeScript Compiler

MIT


Concurrent-ruby

Modern concurrency tools for Ruby. Inspired by Erlang, Clojure, Scala, Haskell, F#, C#, Java, and classic concurrency patterns.

MIT


Connection_pool

Generic connection pool for Ruby

MIT


Crass

CSS parser based on the CSS Syntax Level 3 spec.

MIT


Csvlint

CSV Validator

MIT


Daemons

A toolkit to create and control daemons in different ways

MIT


Database_cleaner

Strategies for cleaning databases. Can be used to ensure a clean state for testing.

MIT


Debug_inspector

A Ruby wrapper for the MRI 2.0 debug_inspector API

MIT


Devise

Flexible authentication solution for Rails with Warden

MIT


Devise-i18n-views

I18n support for devise views

MIT


Diff-lcs

Diff::LCS computes the difference between two Enumerable sequences using the McIlroy-Hunt longest common subsequence (LCS) algorithm

MIT


Ejs

EJS (Embedded JavaScript) template compiler

MIT


Enumerize

Enumerated attributes with I18n and ActiveRecord/Mongoid/MongoMapper support

MIT


Erubis

a fast and extensible eRuby implementation which supports multi-language

MIT


Escape_utils

Faster string escaping routines for your web apps

MIT


Ethon

Libcurl wrapper.

MIT


Execjs

Run JavaScript code from Ruby

MIT


Exifr

Read EXIF from JPEG and TIFF images

MIT


Factory_girl

factory_girl provides a framework and DSL for defining and using model instance factories.

MIT


Factory_girl_rails

factory_girl_rails provides integration between factory_girl and rails 3 or newer

MIT


Faker

Easily generate fake data

MIT


Fancybox2-rails

Use FancyBox 2 with Rails 3.1/4.0

MIT


Faraday

HTTP/REST API client library.

MIT


Font-awesome-rails

an asset gemification of the font-awesome icon font library

MIT


Foreman

Process manager for applications with multiple components

MIT


Formatador

Ruby STDOUT text formatting

MIT


Friendly_id

A comprehensive slugging and pretty-URL plugin.

MIT


Fspath

Better than Pathname

MIT


Gem-licenses

Attempts to figure out what licenses various gems use.

MIT


Geocoder

Complete geocoding solution for Ruby.

MIT


Globalid

Refer to any model with a URI: gid://app/class/id

MIT


Globalize

Rails I18n de-facto standard library for ActiveRecord model/data translation

MIT


Globalize-accessors

Define methods for accessing translated attributes

MIT


Gon

Get your Rails variables in your JS

MIT


Graphiql-rails

A mountable GraphiQL endpoint for Rails

MIT


Graphql

A GraphQL language and runtime for Ruby

MIT


Groupdate

The simplest way to group temporal data

MIT


Guard

Guard keeps an eye on your file modifications

MIT


Guard-compat

Tools for developing Guard compatible plugins

MIT


Guard-livereload

Guard plugin for livereload

MIT


Haml

An elegant, structured (X)HTML/XML templating engine.

MIT


Haml-rails

let your Gemfile do the configuring

MIT


Hashie

Your friendly neighborhood hash library.

MIT


Hike

Find files in a set of paths

MIT


Htmlentities

Encode/decode HTML entities

MIT


Http-cookie

A Ruby library to handle HTTP Cookies based on RFC 6265

MIT


Http_accept_language

Find out which locale the user preferes by reading the languages they specified in their browser

MIT


Http_parser.rb

Simple callback-based HTTP request/response parser

MIT


Httparty

Makes http fun! Also, makes consuming restful web services dead easy.

MIT


I18n

New wave Internationalization support for Ruby

MIT


Image_optim

Optimize (lossless compress, optionally lossy) images (jpeg, png, gif, svg) using external utilities (advpng, gifsicle, jhead, jpeg-recompress, jpegoptim, jpegrescan, jpegtran, optipng, pngcrush, pngout, pngquant, svgo)

MIT


Image_optim_pack

Precompiled binaries for image_optim: advpng, gifsicle, jhead, jpeg-recompress, jpegoptim, jpegtran, optipng, pngcrush, pngquant

MIT


In_threads

Execute ruby code in parallel

MIT


Iniparse

A pure Ruby library for parsing INI documents.

MIT


Jasmine-core

JavaScript BDD framework

MIT


Jasmine-rails

Makes Jasmine easier on Rails 3.2 & up

MIT


Jbuilder

Create JSON structures via a Builder-style DSL

MIT


Jquery-fileupload-rails

jQuery File Upload for Rails 3.1+ Asset Pipeline

MIT


Jquery-rails

Use jQuery with Rails 3+

MIT


Jquery-ui-rails

jQuery UI packaged for the Rails asset pipeline

MIT


Jstimezonedetect-rails

The jsTimezoneDetect.js library ready for Rails' asset pipeline.

MIT


Js_cookie_rails

Adds js-cookie to the Rails asset pipeline.

MIT


Json-schema

Ruby JSON Schema Validator

MIT


Jstz-rails3-plus

Use jstz with Rails 3

MIT


Jwt

JSON Web Token implementation in Ruby

MIT


Listen

Listen to file modifications

MIT


Loofah

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments

MIT


Lumberjack

A simple, powerful, and very fast logging utility that can be a drop in replacement for Logger or ActiveSupport::BufferedLogger.

MIT


Mail

Mail provides a nice Ruby DSL for making, sending and reading emails.

MIT


Meta_request

Request your Rails request

MIT


Method_source

retrieve the sourcecode for a method

MIT


Mime-types

The mime-types library provides a library and registry for information about MIME content type definitions

MIT


Mimemagic

Fast mime detection by extension or content

MIT


Mini_mime

A lightweight mime type lookup toy

MIT


Mini_portile2

Simplistic port-like solution for developers

MIT


Minitest

minitest provides a complete suite of testing facilities supporting TDD, BDD, mocking, and benchmarking

MIT


Multi_json

A common interface to multiple JSON libraries.

MIT


Multi_xml

A generic swappable back-end for XML parsing

MIT


Multipart-post

A multipart form post accessory for Net::HTTP.

MIT


Mustache

Mustache is a framework-agnostic way to render logic-free views.

MIT


Nenv

Convenience wrapper for Ruby's ENV

MIT


Net-http-persistent

Manages persistent connections using Net::HTTP plus a speed fix for Ruby 1.8

MIT


Netrc

Library to read and write netrc files.

MIT


Nilify_blanks

Auto-convert blank fields to nil.

MIT


Nokogiri

Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser

MIT


Notiffany

Notifier library (extracted from Guard project)

MIT


Oauth2

A Ruby wrapper for the OAuth 2.0 protocol.

MIT


Omniauth

A generalized Rack framework for multiple-provider authentication.

MIT


Omniauth-facebook

Facebook OAuth2 Strategy for OmniAuth

MIT


Omniauth-oauth2

An abstract OAuth2 strategy for OmniAuth.

MIT


Open_uri_redirections

OpenURI patch to allow redirections between HTTP and HTTPS

MIT


Orm_adapter

orm_adapter provides a single point of entry for using basic features of popular ruby ORMs. Its target audience is gem authors who want to support many ruby ORMs.

MIT


Overcommit

Git hook manager

MIT


Paperclip

File attachments as attributes for ActiveRecord

MIT


Paperclip-optimizer

Minify Paperclip image attachments like JPGs, GIFs or PNGs

MIT


Parallel

Run any kind of code in parallel processes

MIT


Paranoia

Paranoia is a re-implementation of acts_as_paranoid for Rails 3, 4, and 5, using much, much, much less code.

MIT


Parser

A Ruby parser written in pure Ruby.

MIT


Phantomjs

Auto-install phantomjs on demand for current platform. Comes with poltergeist integration.

MIT


Powerpack

A few useful extensions to core Ruby classes.

MIT


Progress

Show progress of long running tasks

MIT


Pry

An IRB alternative and runtime developer console

MIT


Quiet_assets

Turns off Rails asset pipeline log.

MIT


Rack

a modular Ruby webserver interface

MIT


Rack-contrib

Contributed Rack Middleware and Utilities

MIT


Rack-livereload

Insert LiveReload into your app easily as Rack middleware

MIT


Rack-protection

You should use protection!

MIT


Rack-test

Simple testing API built on Rack

MIT


Rails

Full-stack web application framework.

MIT


Rails-assets-leaflet.easybutton

Easily add Font Awesome control buttons to Leaflet maps with attached callbacks

MIT


Rails-assets-jquery

MIT


Rails-assets-leaflet-draw

Vector drawing plugin for Leaflet

MIT


Rails-assets-leaflet.fullscreen

Leaflet.Control.FullScreen for Leaflet

MIT


Rails-deprecated_sanitizer

Deprecated sanitizer API extracted from Action View.

MIT


Rails-dom-testing

Dom and Selector assertions for Rails applications

MIT


Rails-erd

Entity-relationship diagram for your Rails models.

MIT


Rails-html-sanitizer

This gem is responsible to sanitize HTML fragments in Rails applications.

MIT


Rails-i18n

Common locale data and translations for Rails i18n.

MIT


Rails_serve_static_assets

Sets serve_static_assets to true so Rails will sere your static assets

MIT


Railties

Tools for creating, working with, and running Rails applications.

MIT


Rainbow

Colorize printed text on ANSI terminals

MIT


Rake

Rake is a Make-like program implemented in Ruby

MIT


Rb-fsevent

Very simple & usable FSEvents API

MIT


Rb-inotify

A Ruby wrapper for Linux's inotify, using FFI

MIT


Redis

A Ruby client library for Redis

MIT


Request_store

RequestStore gives you per-request global storage.

MIT


Responders

A set of Rails responders to dry up your application

MIT


Rest-client

Simple HTTP and REST client for Ruby, inspired by microframework syntax for specifying actions.

MIT


Role_model

Declare, assign and query roles with ease

MIT


Route_downcaser

Makes routing in Rails case-insensitive

MIT


Rspec-core

rspec-core-3.4.4

MIT


Rspec-expectations

rspec-expectations-3.4.0

MIT


Rspec-mocks

rspec-mocks-3.4.1

MIT


Rspec-rails

RSpec for Rails

MIT


Rspec-support

rspec-support-3.4.1

MIT


Rubocop

Automatic Ruby code style checking tool.

MIT


Ruby-ole

Ruby OLE library.

MIT


Ruby-progressbar

Ruby/ProgressBar is a flexible text progress bar library for Ruby.

MIT


Ruby_dep

Extracts supported Ruby versions from Travis file

MIT


Ruby_http_client

A simple REST client

MIT


Sass

A powerful but elegant CSS compiler that makes CSS fun again.

MIT


Sass-rails

Sass adapter for the Rails asset pipeline.

MIT


Sdoc

rdoc html with javascript search index.

MIT


Shellany

Simple, somewhat portable command capturing

MIT


Shoulda-matchers

Making tests easy on the fingers and eyes

MIT


Sitemap_generator

Easily generate XML Sitemaps

MIT


Slop

Simple Lightweight Option Parsing

MIT


Spring

Rails application preloader

MIT


Sprockets

Rack-based asset packaging system

MIT


Sprockets-rails

Sprockets Rails integration

MIT


Stripe

Ruby bindings for the Stripe API

MIT


The_sortable_tree

Drag&Drop GUI for awesom_nested_set. Render Tree Helper. Very fast! Ready for Rails 4

MIT


Thor

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

MIT


Tilt

Generic interface to multiple Ruby template engines

MIT


Typhoeus

Parallel HTTP library on top of libcurl multi.

MIT


Tzinfo

Daylight savings aware timezone library

MIT


Uglifier

Ruby wrapper for UglifyJS JavaScript compressor

MIT


Unf_ext

Unicode Normalization Form support library for CRuby

MIT


Unicode-display_width

Determines the monospace display width of a string in Ruby.

MIT


Uri_template

A templating system for URIs.

MIT


Voight_kampff

Voight-Kampff bot detection

MIT


Warden

Rack middleware that provides authentication for rack applications

MIT


Web-console

A debugging tool for your Ruby on Rails applications.

MIT


Webpacker

Use Webpack to manage app-like JavaScript modules in Rails

MIT


Websocket

Universal Ruby library to handle WebSocket protocol

MIT


Will_paginate

Pagination plugin for web frameworks and other apps

MIT


Will_paginate-bootstrap

Integrates the Twitter Bootstrap pagination component with will_paginate

MIT


Xpath

Generate XPath expressions from Ruby

MIT


Zip-zip

Ease the migration to RubyZip v1.0.0

MIT


Eventmachine

Ruby/EventMachine library

Ruby


Image_size

Measure image size using pure Ruby

Ruby


Io-console

Console interface

Ruby


Json

JSON Implementation for Ruby

Ruby


Pg

Pg is the Ruby interface to the {PostgreSQL RDBMS}[http://www.postgresql.org/]

Ruby


Rdoc

RDoc produces HTML and command-line documentation for Ruby projects

Ruby


Thin

A thin and fast web server

Ruby


Addressable

URI Implementation

Apache 2.0


Aws-sdk

AWS SDK for Ruby

Apache 2.0


Aws-sdk-core

AWS SDK for Ruby - Core

Apache 2.0


Aws-sdk-resources

AWS SDK for Ruby - Resources

Apache 2.0


Aws-sigv4

AWS Signature Version 4 library.

Apache 2.0


Jmespath

JMESPath - Ruby Edition

Apache 2.0


React-rails

React integration for Ruby on Rails

Apache 2.0


Selenium-webdriver

The next generation developer focused tool for automated testing of webapps

Apache 2.0


Sentry-raven

A gem that provides a client interface for the Sentry error logger

Apache 2.0


Thread_safe

Thread-safe collections and utilities for Ruby

Apache 2.0


Mime-types

The mime-types library provides a library and registry for information about MIME content type definitions

artistic-2.0


Colorize

Ruby gem for colorizing text using ANSI escape sequences.

gpl-2.0


Mime-types

The mime-types library provides a library and registry for information about MIME content type definitions

gpl-2.0


Ruby-graphviz

Interface to the GraphViz graphing tool

gpl-2.0


Activerecord_json_validator

ActiveRecord::JSONValidator makes it easy to validate JSON attributes with a JSON schema.

bsd 3-clause


Domain_name

Domain Name manipulation library for Ruby

BSD 2-Clause


Rubyzip

rubyzip is a ruby module for reading and writing zip files

BSD 2-Clause


Unf

A wrapper library to bring Unicode Normalization Form support to Ruby/JRuby

BSD 2-Clause


Bundler-audit

Patch-level verification for Bundler

gpl-3.0+


Byebug

Ruby 2.0 fast debugger - base + CLI

BSD


Ffi

Ruby FFI

BSD


Pg

Pg is the Ruby interface to the {PostgreSQL RDBMS}[http://www.postgresql.org/]

BSD


Rails-assets-polyglot

Give your JavaScript the ability to speak many languages.

BSD


Diff-lcs

Diff::LCS computes the difference between two Enumerable sequences using the McIlroy-Hunt longest common subsequence (LCS) algorithm

Perl Artistic v2


Diff-lcs

Diff::LCS computes the difference between two Enumerable sequences using the McIlroy-Hunt longest common subsequence (LCS) algorithm

GPLv2


Thin

A thin and fast web server

GPLv2


Domain_name

Domain Name manipulation library for Ruby

bsd-3-clause


Puma

Puma is a simple, fast, threaded, and highly concurrent HTTP 1.1 server for Ruby/Rack applications

bsd-3-clause


Domain_name

Domain Name manipulation library for Ruby

mpl-2.0


Eventmachine

Ruby/EventMachine library

gpl


Pg

Pg is the Ruby interface to the {PostgreSQL RDBMS}[http://www.postgresql.org/]

gpl


Quiet_assets

Turns off Rails asset pipeline log.

gpl


Em-websocket

EventMachine based WebSocket server

unknown


Git-version-bump

Manage your app version entirely via git tags

unknown


Rails-assets-chart.js

Simple HTML5 Charts using the canvas element

unknown


Rails-assets-owlcarousel2

unknown


Rails-assets-dropzone

Dropzone is an easy to use drag'n'drop library. It supports image previews and shows nice progress bars.

unknown


Rails-assets-intl-tel-input

unknown


Rails-assets-leaflet

JavaScript library for mobile-friendly interactive maps

unknown


Rails-assets-leaflet-dist

Leaflet Bower package

unknown


Rails-assets-moment

unknown


Rails-assets-ua-parser-js

unknown


Rails-assets-undr--prunecluster

unknown


Fancybox2-rails

Use FancyBox 2 with Rails 3.1/4.0

creative commons by-nc


Font-awesome-rails

an asset gemification of the font-awesome icon font library

sil open font license


Rails-assets-flexslider

An awesome, fully responsive jQuery slider toolkit.

gplv2 and later


Rails-assets-mapbox.js

Mapbox Javascript API

see license.md


Rails-assets-pnotify

JavaScript notification plugin.

GPLv3


Spreadsheet

The Spreadsheet Library is designed to read and write Spreadsheet Documents

GPLv3


Rails-assets-pnotify

JavaScript notification plugin.

LGPLv3


Sidekiq

Simple, efficient background processing for Ruby

LGPLv3


Rails-assets-pnotify

JavaScript notification plugin.

mpl-1.1


Sqlite3

This module allows Ruby programs to interface with the SQLite3 database engine (http://www.sqlite.org)

bsd-3