The Ruby Toolbox - Know your options!

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With our search you can find Ruby open source libraries beyond what is listed in our categories.

We index all Rubygems published on Rubygems.org.

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We sort projects based on their popularity in the Ruby community - Rubygem downloads as well as popularity of the source code repository on GitHub.

This helps to identify projects that have a big user base, which is an indicator of project stability, maturity and maintenance.

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We assess the maintenance status of projects based on recent activity like package releases, commit activity or open issue counts and display colored indicators based on that.

This gives you a quick overview of the health of a project.

Popular Categories

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Web App Frameworks

Software Frameworks that are designed to support the development of web applications including web services, web resources, and web APIs

Scripting Frameworks

Libraries that simplify the writing of command-line interfaces for your Ruby programs

Amazon Web Services

Official and community-built utilities for working with Amazon's AWS cloud services

JSON Parsers

JSON parsers convert data serialized in the popular JSON data exchange format to and from Ruby objects

Test Frameworks

Frameworks for writing automated tests for your software

HTTP clients

Easily interact with HTTP-based services

E-Mail Delivery

Easily send e-mails from your Ruby programs

Template Engines

Generate HTML and other markup based on dynamic content

Browser testing

Write and run automated tests of your web app in a real-world browser environment

JavaScript Tools

Utilities for working with JavaScript in Ruby

Ruby Core Extensions

Libraries that enhance Ruby's core classes like Hash or String with additional features

Concurrent Processing

Tools that simplify the writing of concurrent Ruby programs

Web Servers

Expose HTTP-based services from Ruby. Usually these are used with a rack-based Ruby web framework.

Web Authentication

Handle the authentication of users in web applications written in frameworks like Rails

Syntax Highlighting

File Uploads

Handle file uploads in Ruby-based web applications, including streamlined storage on cloud services, the extraction of file metadata and handling of post-processing tasks like resizing and cropping of images

Trending Projects

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sqlite_extensions-uuid

SQLite's UUID v4 extension, packaged as a gem.

ruby_llm

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 d...

rubygems-requirements-system

Users need to install system packages to install an extension library that depends on system packages. It bothers users because users need to install system packages and an extension library separately. rubygems-requirements-system helps to install system packages on "gem install". Users can install both system packages and an extension library by one action, "gem install".

parquet

Parquet is a high-performance Parquet library for Ruby, written in Rust. It wraps the official Apache Rust implementation to provide fast, correct Parquet parsing.

dor-event-client

A client for event services provided by DOR Services App

bake-test-external

Run external test suites to check for breakage.

traject_plus

Extensions to Traject for non-MARC formats

voxpupuli-rubocop

Used in Vox Pupuli gems to configure RuboCop in a unified and centralised way