Best Open Source ruby Libraries
A curated list of the most popular GitHub repositories tagged with ruby. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1rails/rails
Ruby on Rails
#2jekyll/jekyll
:globe_with_meridians: Jekyll is a blog-aware static site generator in Ruby
#3serhii-londar/open-source-mac-os-apps
🚀 Awesome list of open source applications for macOS. https://t.me/s/opensourcemacosapps
#4Homebrew/brew
🍺 The missing package manager for macOS (or Linux)
#5discourse/discourse
A platform for community discussion. Free, open, simple.
#6fastlane/fastlane
🚀 The easiest way to automate building and releasing your iOS and Android apps
#7SeleniumHQ/selenium
A browser automation framework and ecosystem.
#8chatwoot/chatwoot
Open-source live-chat, email support, omni-channel desk. An alternative to Intercom, Zendesk, Salesforce Service Cloud etc. 🔥💬
#9hashicorp/vagrant
Vagrant is a tool for building and distributing development environments.
#10asdf-vm/asdf
Extendable version manager with support for Ruby, Node.js, Elixir, Erlang & more
#11lewagon/setup
Setup instructions for Le Wagon's students on their first day of AI Software Development Bootcamp
#12rbenv/rbenv
Manage your app's Ruby environment
#13rubocop/ruby-style-guide
A community-driven Ruby coding style guide
#14postalserver/postal
📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
#15Homebrew/homebrew-core
🍻 Default formulae for the missing package manager for macOS (or Linux)
#16ruby-grape/grape
An opinionated framework for creating REST-like APIs in Ruby.
#17lk-geimfari/awesomo
Cool open source projects. Choose your project and get involved in Open Source development now.
#18activeadmin/activeadmin
The administration framework for Ruby on Rails applications.
#19resque/resque
Resque is a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later.
#20getlago/lago
Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics
#21kaminari/kaminari
⚡ A Scope & Engine based, clean, powerful, customizable and sophisticated paginator for Ruby webapps
#22zammad/zammad
Zammad is a web based open source helpdesk/customer support system.
#23ddnexus/pagy
🏆 The Best Pagination Ruby Gem 🥇
#24opal/opal
Ruby ♥︎ JavaScript
#25simplecov-ruby/simplecov
Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites
#26backup/backup
Easy full stack backup operations on UNIX-like systems.
#27parca-dev/parca
Continuous profiling for analysis of CPU and memory usage, down to the line number and throughout time. Saving infrastructure cost, improving performance, and increasing reliability.
#28prawnpdf/prawn
Fast, Nimble PDF Writer for Ruby
#29moonrepo/moon
A build system and monorepo management tool for the web ecosystem, written in Rust.
#30apache/avro
Apache Avro is a data serialization system.
#31ifmeorg/ifme
Free, open source mental health communication web app to share experiences with loved ones
#32hitobito/hitobito
A web application to manage complex group hierarchies with members, events and a lot more.
#33kreuzberg-dev/tree-sitter-language-pack
Comprehensive tree-sitter grammar compilation with polyglot bindings — Rust, Python, Node.js, Go, Java, Ruby, Elixir, PHP, C#, WASM, and CLI. 305+ languages.
#34appwrite/sdk-generator
Generating SDKs for multiple programming languages and platforms ⚙️
#35oxidize-rb/rb-sys
Easily build Ruby native extensions in Rust
#36OpenC3/cosmos
OpenC3 COSMOS
#37avmnu-sng/rspec-tracer
RSpec Tracer is a specs dependency analyzer, flaky tests detector, tests accelerator, and coverage reporter tool.
#38crisnahine/rails-ai-context
38 MCP tools that give AI agents live access to your Rails schema, models, routes & conventions. Works with Claude Code, Cursor, Copilot, OpenCode, Codex CLI. Zero config.