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A curated list of engineering blogs

📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

A performance dashboard for Postgres

RailsAdmin is a Rails engine that provides an easy-to-use interface for managing your data

🔬 A Ruby library for carefully refactoring critical paths.

Better error page for Rack apps

Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.

💨 Writing Fast Ruby 😍 -- Collect Common Ruby idioms.

ActiveModel::Serializer implementation and Rails hooks

Rails for API only applications

No Longer Maintained - A lightning fast JSON:API serializer for Ruby Objects.

🏆 The Best Pagination Ruby Gem 🥇

Catch unsafe migrations in development

The open source error catcher that's Airbrake API compliant

Generate Entity-Relationship Diagrams for Rails applications

The simplest way to group temporal data

Preview mail in the browser instead of sending.

It's a small library to provide the I18n translations on the Javascript. It comes with Rails support.

Versioned database views for Rails

Ruby: 2 CPUs = 2x Testing Speed for RSpec, Test::Unit and Cucumber

A micro library providing Ruby objects with Publish-Subscribe capabilities

File Attachment toolkit for Ruby applications

algorithms playground for common questions

A Ruby web framework where your Ruby runs on both server and client

Role management library with resource scoping

A high performance implementation of the Ruby programming language, built on GraalVM.

Parse Photoshop files in Ruby with ease

Easy activity tracking for models - similar to Github's Public Activity

Ruby algorithms and data structures. C extensions