Rack middleware to measure production code usage (LOC runtime usage)

A suite of instrumentation metric primitivesthat can be exposed through a web services interface.

Pronto runs analysis quickly by checking only the relevant changes. Created to be used on pull requests, but suited for other scenarios as well. Perfect if you want to find out quickly if branch introduces changes that conform to your styleguide, are DRY, don't introduce security holes and more.

Karafka is Ruby and Rails efficient Kafka processing framework. Karafka allows you to capture everything that happens in your systems in large scale, without having to focus on things that are not your business domain.

The minitar library is a pure-Ruby library that provides the ability to deal with POSIX tar(1) archive files. This is release 0.12. This is likely the last revision before 1.0. minitar (previously called Archive::Tar::Minitar) is based heavily on code originally written by Mauricio Julio Fernández Pradier for the rpa-base project.

Client for the ACME protocol.

Fast date/time parser with customisable formats, timezone and I18n support.

A framework to implement robust multiprocess servers like Unicorn

Contains the core of Nanoc

A delightful Ruby way to work with AI. Tired of juggling different SDKs? RubyLLM provides one beautiful, Ruby-like interface for OpenAI, Anthropic, Gemini, Bedrock, OpenRouter, DeepSeek, Ollama, and any OpenAI-compatible API. Chat (with text, images, audio, PDFs), generate images, create embeddings, use tools (function calling), stream responses, and integrate with Rails effortlessly. Minimal dependencies, maximum developer happiness - just clean Ruby code that works.

Ferrum allows you to control headless Chrome browser

Actionable code coverage - detects untested code blocks in recent changes

This is the ruby client for Unleash, a powerful feature toggle system that gives you a great overview over all feature toggles across all your applications and services.

Transparent proxy support for any EventMachine protocol

Shared code for Pact gems

Library for parsing SSH certificates

Ruby implementation of the ICU (International Components for Unicode) that uses the Common Locale Data Repository to format dates, plurals, and more.

Puppet's accceptance testing harness

RSpec tests for your AWS resources.

Dnsruby is a pure Ruby DNS client library which implements a stub resolver. It aims to comply with all DNS RFCs, including DNSSEC NSEC3 support.