Ruby

Foremanddollar/foreman

A process manager for Procfile-based applications that runs multiple processes from a single command.

VCRvcr/vcr

A Ruby library that records HTTP interactions and replays them for fast, deterministic tests.

administratethoughtbot/administrate

A Rails engine for generating flexible, customizable admin dashboards with clean interfaces.

Synxvenmo/synx

A command-line tool that reorganizes your Xcode project folder structure to match your Xcode groups.

Faradaylostisland/faraday

A flexible HTTP client library for Ruby with adapter abstraction and Rack middleware support.

httpartyjnunemaker/httparty

A Ruby library that simplifies HTTP requests with an intuitive API and built-in command-line interface.

ransackactiverecord-hackery/ransack

A Ruby gem for adding object-based search and filtering to Rails applications without external dependencies.

ransackactiverecord-hackery/ransack

A Ruby gem for adding object-based search and filtering to Rails applications without external dependencies.

Concurrent Rubyruby-concurrency/concurrent-ruby

A comprehensive suite of modern concurrency abstractions and thread-safe utilities for Ruby, inspired by Erlang, Clojure, and Java.

Rack Attackkickstarter/rack-attack

Rack middleware for blocking and throttling abusive requests in Ruby web applications.

fast-rubyJuanitoFatas/fast-ruby

A collection of Ruby idioms with performance benchmarks to help developers write faster Ruby code.

Dangerdanger/danger

Automates common code review chores by running during CI to enforce team norms and highlight issues in pull requests.

cancancanCanCanCommunity/cancancan

An authorization library for Ruby and Ruby on Rails that centralizes permission logic and restricts resource access.

cancancancancancommunity/cancancan

An authorization library for Ruby and Ruby on Rails that centralizes permission logic and restricts resource access.

will_paginatemislav/will_paginate

A pagination library for Ruby on Rails, Sinatra, Hanami::View, and Sequel applications.

MRubymruby/mruby

A lightweight Ruby implementation designed for embedding and linking within applications, with ISO standard compliance.

doorkeeperdoorkeeper-gem/doorkeeper

A Ruby gem that provides OAuth 2 provider functionality for Ruby on Rails and Grape applications.

graphql-rubyrmosolgo/graphql-ruby

A Ruby implementation of the GraphQL specification for building type-safe APIs.

Slimslim-template/slim

A fast, lightweight Ruby template language that reduces HTML syntax to essential parts using indentation.

ActiveModel::Serializersrails-api/active_model_serializers

A Rails library for serializing Active Model objects into JSON, with built-in hooks and flexible adapter support.

draperdrapergem/draper

A decorator/view-model library for Rails applications that adds an object-oriented layer of presentation logic.

rspec-railsrspec/rspec-rails

RSpec integration for Ruby on Rails, providing a behavior-driven testing framework as an alternative to Minitest.

webpackerrails/webpacker

A retired Rails gem that integrated Webpack to manage JavaScript modules in Rails applications.

AASMaasm/aasm

AASM is a Ruby library for adding finite state machines to plain Ruby classes and ORM models like ActiveRecord and Mongoid.

rest-clientrest-client/rest-client

A simple HTTP and REST client for Ruby with a Sinatra-inspired DSL for specifying actions.

formtasticformtastic/formtastic

A Rails form builder DSL that generates semantically rich, accessible HTML forms with clean markup.

formtasticjustinfrench/formtastic

A Rails form builder DSL that generates semantically rich, accessible HTML forms with minimal code.

colorlsathityakumar/colorls

A Ruby gem that beautifies the terminal's ls command with color and Font Awesome icons.

colorlsathityakumar/colorls

A Ruby gem that beautifies the terminal's ls command with color and Font Awesome icons.

Pagyddnexus/pagy

A fast, lightweight, and agnostic pagination gem for Ruby applications with multiple pagination techniques and frontend helpers.

ActsAsTaggableOnmbleigh/acts-as-taggable-on

A Rails plugin for adding flexible, multi-context tagging to ActiveRecord models.

Opalopal/opal

Opal is a Ruby to JavaScript source-to-source compiler with a complete Ruby corelib and stdlib implementation.

SimpleCovcolszowka/simplecov

A code coverage analysis tool for Ruby with powerful configuration and automatic merging across test suites.

Backupbackup/backup

A RubyGem utility for modeling and performing full-stack backup operations on UNIX-like systems.

Delayed Jobcollectiveidea/delayed_job

A database-backed asynchronous priority queue system for Ruby on Rails, extracted from Shopify.

Prawnprawnpdf/prawn

A pure Ruby library for generating PDF documents with extensive text, vector drawing, and internationalization support.