Serializer brings convention over configuration to your JSON generation.
Work together to quickly design, prototype, document and test APIs.
API Documentation with powerful tooling.
Microframework to create REST-ful APIs in Ruby.
Autogenerate documentation on Grape API.
Display documentation that is generated using Grape Swagger.
Map incoming controller parameters to named scopes in your resources.
Jbuilder gives you a simple DSL for declaring JSON structures that beats massaging giant hash structures. This is particularly helpful when the generation process is fraught with conditionals and loops.
Simple HTTP and REST client for Ruby, inspired by microframework syntax for specifying actions.
State machines for Ruby classes (plain Ruby, Rails Active Record, Mongoid).
Store different kind of actions (Like, Follow, Star, Block ...) in one table via ActiveRecord Polymorphic Association.
A tagging plugin for Rails applications that allows for custom tagging along dynamic contexts.
Easily and efficiently make your ActiveRecord models support hierarchies.
Turbo-charged counter caches for your Rails app. Huge improvements over the Rails standard counter caches.
A simple approach to creating a custom counter cache that can be used across multiple models.
This gem gives every ActiveRecord::Base object the possibility to do a deep clone that includes user specified associations.
Enumerated attributes with I18n and ActiveRecord/Mongoid support. It can be integrated with Simple Form.
FriendlyId is the “Swiss Army bulldozer” of slugging and permalink plugins for ActiveRecord. It allows you to create pretty URL’s and work with human-friendly strings as if they were numeric ids for ActiveRecord models.
Rails I18n de-facto standard library for ActiveRecord model/data translation.
Automatic ActiveRecord eager loading to reduce the number of database queries run by your application.
PaperTrail lets you track changes to your models' data. It's good for auditing or versioning.
ActiveRecord plugin allowing you to hide and restore records without actually deleting them.
Easy activity tracking for models - similar to Github's Public Activity.
Sequenced is a simple gem that generates scoped sequential IDs for ActiveRecord models.
Check how many times url was shared in social networks.
Validates provides collection of useful custom validators for Rails applications, including:
ActiveAdmin is a administration framework for Ruby on Rails applications.
: Flat skin for active admin.
A Rails engine that helps you put together a super-flexible admin dashboard.
RailsAdmin is a Rails engine that provides an easy-to-use interface for managing your data.
A modern, responsive admin framework for Ruby on Rails
Typus is a control panel for Ruby on Rails applications to allow trusted users edit structured content.
A fist full of code metrics
Quick automated code review of your changes
Rails best practice is a code metric tool to check the quality of rails codes.
Rubocop is a Ruby static code analyzer. Out of the box it will enforce many of the guidelines outlined in the community Ruby Style Guide.
Awesome Print is a Ruby library that pretty prints Ruby objects in full color exposing their internal structure with proper indentation.
Better errors replaces the standard Rails error page with a much better and more useful error page.
If you would like to use Better Errors' advanced features (REPL, local/instance variable inspection, pretty stack frame names), you need to add the .
Byebug is a simple to use, feature rich debugger for Ruby 2. It uses the new TracePoint API for execution control and the new Debug Inspector API for call stack navigation, so it doesn't depend on internal core sources.
The Kernel.g that works like Kernel.p by using terminal-notifier or growl.
Preview email in the default browser instead of sending it. This means you do not need to set up email delivery in your development environment, and you no longer need to worry about accidentally sending a test email to someone else's address.
Pry navigation commands via byebug.
Avoid repeating yourself, use pry-rails instead of copying the initializer to every rails project. This is a small gem which causes rails console to open pry. It therefore depends on pry.
Rails footnotes displays footnotes in your application for easy debugging, such as sessions, request parameters, cookies, filter chain, routes, queries, etc.
RailsPanel is a Chrome extension for Rails development that will end your tailing of development.log.
Spring is a Rails application preloader. It speeds up development by keeping your application running in the background so you don't need to boot it every time you run a test, rake task or migration.
terminal-notifier is a command-line tool to send Mac OS X User Notifications, which are available in Mac OS X 10.8 and higher.
Web Console is a debugging tool for your Ruby on Rails applications.
Multi-environment YAML style configurations that helps easily manage environment specific settings in an easy and usable manner.
Dotenv is a gem that allows you to set your environment variables in .env file, and it will load it in to ENV.
Figaro is very simple, Heroku-friendly Rails app configuration using ENV and a single YAML file.
Opsworks-dotenv let you configure the environment for you Rails application using OpsWorks, Chef and Dotenv.
Carrierwave is a classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks.
Carrierwave extension to crop uploaded images using Jcrop plugin with preview.
This gem allows you to simply optimize CarrierWave images via jpegoptim or optipng using the image_optimizer gem.
Offload CarrierWave's image processing and storage to a background process using Delayed Job, Resque, Sidekiq, Qu, Queue Classic or Girl Friday.
Dragonfly is for on-the-fly file processing - suitable for images or other attachments
Fog is the Ruby cloud services library, top to bottom.
MiniMagick is a ruby wrapper for ImageMagick or GraphicsMagick command line.
Easy file attachment management for ActiveRecord.
Refile is a modern file upload library for Ruby applications. It is simple, yet powerful.
Rails jQuery file uploads via standard Rails "remote: true" forms.
File Attachment toolkit for Ruby applications
Ahoy provides a solid foundation to track visits and events in Ruby, JavaScript, and native apps.
Impressionist can log page impressions (technically action impressions), but it is not limited to that. You can log impressions multiple times per request. And you can also attach it to a model. The goal of this project is to provide customizable stats that are immediately accessible in your application as opposed to using Google Analytics and pulling data using their API.
An attempt to tame Rails' default policy to log everything.
Airbrussh pretties up your SSHKit and Capistrano output
Chartkick helps your to create beautiful Javascript charts with one line of Ruby.
CKEditor is a WYSIWYG text editor designed to simplify web content creation. It brings common word processing features directly to your web pages. Enhance your website experience with our community maintained editor. ckeditor.com
GitHub HTML processing filters and utilities. This module includes a small framework for defining DOM based content filters and applying them to user provided content.
A Scope & Engine based, clean, powerful, customizable and sophisticated paginator for Rails 3 and 4.
Shell commands for development, staging, and production parity for Heroku apps.
Generate Entity-Relationship Diagrams for Rails applications.
is a simple wrapper to send notifications to Slack webhooks.
Library is designed to read and write Spreadsheet Documents.
Remote multi-server automation tool.
fast deployer and server automation tool.
Best practices for running Rails in production.
Rack middleware to blocking & throttling.
A set of Rails responders to dry up your application.
Rack::Timeout is great. Slowpoke makes it better.
Database based asynchronous priority queue system.
Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later.
Rufus-scheduler is a Ruby gem for scheduling pieces of code (jobs). It understands running a job AT a certain time, IN a certain time, EVERY x time or simply via a CRON statement.
Simple, efficient background processing for Ruby.
Scheduler / Cron for Sidekiq jobs
Lightweight job scheduler extension for Sidekiq
Recurring jobs for sidekiq.
Sucker punch is a single-process Ruby asynchronous processing library.
Whenever is a Ruby gem that provides a clear syntax for writing and deploying cron jobs.
High-level Elasticsearch Ruby framework based on the official elasticsearch-ruby client.
Elasticsearch integrations for ActiveModel/Record and Ruby on Rails.
pg_search builds ActiveRecord named scopes that take advantage of PostgreSQL's full text search
Ransack enables the creation of both simple and advanced search forms for your Ruby on Rails application.
Intelligent search made easy with Rails and Elasticsearch.
Sunspot is a Ruby library for expressive, powerful interaction with the Solr search engine. Sunspot is built on top of the RSolr library, which provides a low-level interface for Solr interaction; Sunspot provides a simple, intuitive, expressive DSL backed by powerful features for indexing objects and searching for them.
Brakeman is a static analysis tool which checks Ruby on Rails applications for security vulnerabilities.
bundler-audit is a patch-level verification tool for Bundler which checks for vulnerable versions of gems and insecure gem sources.
Capybara helps you test web applications by simulating how a real user would interact with your app. And drivers:
Capybara-webkit is a capybara driver that uses Webkit via QtWebkit.
Database Cleaner is a set of strategies for cleaning your database in Ruby.Support ActiveRecord, DataMapper, Sequel, MongoMapper, Mongoid, CouchPotato, Ohm and Redis.
Factorybot is a fixtures replacement with a straightforward definition syntax, support for multiple build strategies (saved instances, unsaved instances, attribute hashes, and stubbed objects), and support for multiple factories for the same class (user, adminuser, and so on), including factory inheritance.
Factorybotrails provides Rails integration for factory_bot.
FactoryFactoryGirl lets you generate factory files more efficiently with naming rules.
Page-object is a simple gem that assists in creating flexible page objects for testing browser based applications.
Poltergeist allows you to run your Capybara tests on a headless WebKit browser, provided by PhantomJS.
ResponseCodeMatchers provides rspec matchers to match http response code.
Rspec-rails is a testing framework for Rails 3.x and 4.x.
Secure Headers will automatically apply several headers that are related to security.
Selenium-webdriver provides ruby bindings for WebDriver.
Shoulda-matchers provides serveral matchers for testing common Rails functionality.
SimpleCov is a code coverage analysis tool for Ruby.
A gem providing "time travel" and "time freezing" capabilities, making it dead simple to test time-dependent code.
Record your test suite's HTTP interactions and replay them during future test runs for fast, deterministic, accurate tests.
Acl9 is a role-based authorization system that provides a concise DSL for securing your Rails application.
Continuation of CanCan, the authorization Gem for Ruby on Rails.CanCan is an authorization library for Ruby on Rails which restricts what resources a given user is allowed to access. All permissions are defined in a single location (the Ability class) and not duplicated across controllers, views, and database queries.
Rails authentication with email & password.
Devise is a flexible authentication solution for Rails based on Warden.
Token based authentication for Rails JSON APIs.
Seamless JWT authentication for Rails API.
Pundit provides a set of helpers which guide you in leveraging regular Ruby classes and object oriented design patterns to build a simple, robust and scaleable authorization system.
Role management library with resource scoping.
Magical Authentication for Rails. Supports ActiveRecord, DataMapper, Mongoid and MongoMapper.
activelinkto adds css 'active' class to your links.
Cells allow you to encapsulate parts of your UI into components into view models. View models, or cells, are simple ruby classes that can render templates.
Dynamic nested forms using jQuery made easy
Formtastic is a Rails FormBuilder DSL (with some other goodies) to make it far easier to create beautiful, semantically rich, syntactically awesome, readily stylable and wonderfully accessible HTML forms in your Rails applications
I18n Country Code Select Form Helper for Rails 3 & 4.
Search Engine Optimization (SEO) plugin for Ruby on Rails applications.
This is a Rails gem for conveniently manage multiple nested models in a single form. It does so in an unobtrusive way through jQuery or Prototype. It can also be integrated with Simple Form.
Simple form aims to be as flexible as possible while helping you with powerful components to create your forms. The basic goal of Simple Form is to not touch your way of defining the layout, letting you find the better design for your eyes.
A Rails plugin to populate a state/province select box from country_select.