Most Popular Gems

Boot large ruby/rails apps faster

Puma is a simple, fast, multi-threaded, and highly parallel HTTP 1.1 server for Ruby/Rack applications. Puma is intended for use in both development and production environments. It's great for highly parallel Ruby implementations such as JRuby and TruffleRuby as well as as providing process worker support to support CRuby well.

Selenium implements the W3C WebDriver protocol to automate popular browsers. It aims to mimic the behaviour of a real user as it interacts with the application's HTML. It's primarily intended for web application testing, but any web-based task can automated.

RuboCop is a Ruby code style checking and code formatting tool. It aims to enforce the community-driven Ruby Style Guide.

TZInfo::Data contains data from the IANA Time Zone database packaged as Ruby modules for use with TZInfo.

Debugging functionality for Ruby. This is completely rewritten debug.rb which was contained by the ancient Ruby versions.

A debugging tool for your Ruby on Rails applications.

Create JSON structures via a Builder-style DSL

Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites

Nokogiri (鋸) makes it easy and painless to work with XML and HTML from Ruby. It provides a sensible, easy-to-understand API for reading, writing, modifying, and querying documents. It is fast and standards-compliant by relying on native parsers like libxml2, libgumbo, or xerces.

The speed of a single-page web application without having to write any JavaScript.

Official AWS Ruby gem for Amazon Simple Storage Service (Amazon S3). This gem is part of the AWS SDK for Ruby.

A Ruby client that tries to match Redis' API one-to-one, while still providing an idiomatic interface.

Integrate Tailwind CSS with the asset pipeline in Rails.

Capybara is an integration testing tool for rack based web applications. It simulates how a user would interact with a website

A database backed ActiveSupport::Cache::Store

Omakase Ruby styling for Rails

Sprockets Rails integration

High-level wrapper for processing images for the web with ImageMagick or libvips.

A modest JavaScript framework for the HTML you already have.

Brakeman detects security vulnerabilities in Ruby on Rails applications via static analysis.

Pg is the Ruby interface to the PostgreSQL RDBMS. It works with PostgreSQL 9.3 and later.

Ruby on Rails is a full-stack web framework optimized for programmer happiness and sustainable productivity. It encourages beautiful code by favoring convention over configuration.

Faker, a port of Data::Faker from Perl, is used to easily generate fake data: names, addresses, phone numbers, etc.

Database-backed Active Job backend.