Ruby

ActiveScaffold provides quick and powerful user interfaces for CRUD (create, read, update, delete) operations for Rails applications. It's excellent for generating admin interfaces, managing Data-Heavy Applications, creating Widgets or for quick prototyping. ActiveScaffold is completly customizable and offers a bunch of additional features including searching, pagination, layout control and overrides of fields, forms and templates.

A Rails engine that helps you put together a super-flexible admin dashboard, by Thoughtbot.

Hot Glue takes a different approach to building both admin and user dashboards. It is a code generation tool like the Rails scaffold generator but with significantly more features. Instead of providing a lot of configuration options, Hot Glue can generate your code. Good for lists & CRUD views for both admin and user-facing dashboards.

A robust Admin Interface for Ruby on Rails apps

A low-code Admin panel and Business Intelligence Rails engine. No DSL - configurable from the UI.

A Rails engine that provides an easy-to-use interface for managing your data.

A modern, responsive admin framework for Rails. Build a back-end in minutes that will grow with the needs of your application.

First-party, privacy-focused traffic analytics for Ruby on Rails applications.

A solid foundation to track visits and events in Ruby, JavaScript, and native apps.

Rails Plugin that tracks impressions and page views.

Model analytics reports and queries against the official Google Analytics Reporting API.

Rack middleware that can be hooked up to multiple services and exposing them in a unified fashion.

Track analytics into the official Google Analytics Collection API.

JSON serialization of objects.

Easy And Fun, in creating XML/JSON responses in Rails 3,4,5 and 6.

A JSON serializer for Ruby, JRuby and TruffleRuby.

A dead simple API wrapper.

Simple, Fast, and Declarative Serialization Library for Ruby.

Speedy Rails JSON serialization with built-in caching.

The thin API stack.

Define structured data models with a DSL that generates JSON Schema and ActiveModel validations from a single source of truth.

an ORM that maps REST resources to Ruby objects. Designed to build applications that are powered by a RESTful API instead of a database.

Create JSON structures via a Builder-style DSL.

A fast JSON:API serializer for Ruby Objects.

JSONAPI::Resources, or "JR", provides a framework for developing a server that complies with the JSON API specification.

JSONAPI::Utils is built on top of JSONAPI::Resources taking advantage of its resource-driven style and bringing an easy way to build modern JSON APIs with no or less learning curve.

A tiny, HAL-compliant JSON presenter for your APIs.

Opinionated template Sinatra app for writing excellent APIs in Ruby.

General ruby templating with json, bson, xml, plist and msgpack support.

Resource-Oriented Architectures in Ruby.

Interact with REST services in an ActiveRecord-like manner.

An unobtrusive way to version APIs in your Rails app.

A plugin for versioning Rails based RESTful APIs.

Synchronises Assets between Rails and S3.

Parse CSS and add vendor prefixes to rules by Can I Use.

A Lightweight Sass Tool Set.

Bower support for Rails projects.

Exposes the Phantom Open Emoji library unicode/image assets and APIs for working with them.

The dynamic stylesheet language for the Rails asset pipeline.

Use Webpack to manage app-like JavaScript modules in Rails. (Official and actively maintained successor to rails/webpacker)

Rack-based asset packaging system.

Bower-less bundler for Sprockets.

Use Vite.js as a modern assets pipeline in Ruby and Rails apps.

JWT authentication solution for Rails APIs.

An authentication system generator for Rails applications.

Authlogic is a clean, simple, and unobtrusive ruby authentication solution.

Small and simple email & password based authentication for Rails.

A flexible authentication solution for Rails based on Warden.

JSON Web Token implementation in Ruby.

A very simple and extensible user authentication library for rails.

A library that standardizes multi-provider authentication utilizing Rack middleware.

Authentication and account management framework for Rack applications.

A stripped-down, bare-bones authentication library for Rails.

General Rack Authentication Framework.

Acl9 is a role-based authorization system that provides a concise DSL for securing your Rails application.

Multi-role and whitelist based authorization gem for Rails.

Authorization framework for Ruby and Rails applications. Composable, extensible and performant.

Continuation of CanCan, an authorization Gem for Ruby on Rails.

A scope-based authorization solution for Ruby on Rails.

Easy to use and read action and content based authorizations.

Minimal authorization through OO design and pure Ruby classes.

Simple role-based authorization for Rails with multi-tenancy support.

An intelligent process and workflow automation platform based on software agents.

Automate your team's conventions surrounding code review.

Huginn is a system for building agents that perform automated tasks for you online.

Ruby bindings for Neovim to make your own neovim editor plugins in Ruby.

A framework and Ruby DSL for progressive system automation.

A simple Ruby on Rails plugin for creating and managing a breadcrumb navigation for a Rails project.

A Ruby on Rails plugin that makes it easy yet flexible to create breadcrumbs.

Manages and displays breadcrumb trails in Rails app - lean & mean.

A ruby gem for creating navigation (html list, link list or breadcrumbs with multiple levels) for your Rails 2, 3 & 4, Sinatra or Padrino.

A free Rails 8 app template: Devise auth, Stripe billing, Tailwind CSS, admin panel, SEO helpers, etc.

Rails application template to build Rails applications faster.

Manage application specific business logic.

Interactor provides a common interface for performing complex interactions in a single request.

Series of Actions with an emphasis on simplicity.

Compose your business logic into commands that sanitize and validate input.

A set of tools for building reliable service objects of any complexity.

Encapsulated related objects in a single system to add behavior during runtime. Extensible implementation of DCI.

A slice of functional programming to chain ruby services and blocks, thus providing a new approach to flow control.

A micro library providing Ruby objects with Publish-Subscribe capabilities.

Action caching for Action Pack.

A high performance pure Ruby client for accessing memcached servers.

A set of Rack middleware and cache helpers that implement various caching strategies.

A blob level caching solution to plug into ActiveRecord.

Kashmir is a Ruby DSL that makes serializing and caching objects a snap.

High performance, pooled, ActiveSupport compliant caching with Redis.

Cache Active Model Records in Rails 3.

Write-Through and Read-Through caching library for ActiveRecord 4.

Protection for Rails models with text-based logic question captchas (from Rob Tuley's textcaptcha.com)

Unobtrusive and flexible spam protection based on the honeypot strategy. It also provides a time-sensitive form submission.

Easy Akismet and TypePad AntiSpam integration for Rails.

reCaptcha API helpers for ruby apps.

A Ruby gem that detects bots, spiders, crawlers and replicants.

A command-line application framework.

The complete solution for Ruby command-line executables.

General purpose Command Line Interface (CLI) framework for Ruby.

Git-Like Interface Command Line Parser.

A class factory and DSL for generating command line programs real quick.

A commandline option parser for Ruby that just gets out of your way.

A make-like build utility for Ruby.

Build command line applications per project with ease. Rake-inspired, Docopt inside.

Simple Lightweight Option Parsing.

A small command line library (Formerly Cocaine).

Toolbox for developing CLI clients.

Pretty print your Ruby objects with style -- in full color and with proper indentation

Friendly English-like interface for your command line. Don't remember a command? Ask Betty.

Extends String class or add a ColorizedString with methods to set text color, background color and text effects.

Beautifies the ls command, with color and font-awesome icons.

STDOUT text formatting.

Simple and fast way to set ANSI terminal colors.

Terminal output styling with intuitive and clean API.

Ruby in your shell.

The most flexible text progress bar library for Ruby.

Plain text table generator with a DRY, column-based API.

Slice your data from multiple DB tables into a single CLI view.

Ruby ASCII Table Generator, simple and feature rich.

Create and manage complex tmux sessions easily.

A simple, colorful and customizable terminal spinner library for Ruby.

The official AWS SDK for Ruby.

Multi-provider Rails engine providing access to files in cloud storage.

The Ruby cloud services library.

Programmatically generate and manage AWS CloudFormation templates, stacks, and change sets.

Powerful Rails 5.2+ CMS Engine.

Flexible, open source, Rails CMS engine.

A self hosted Web publishing platform on Rails.

Rails 4+ CMS and blogging engine, with a core focus on content.

A static analysis security vulnerability scanner for Ruby on Rails applications.

Rack middleware to help measure production code coverage.

Make your Rubies go faster with this command line tool highly inspired by fast-ruby and Sferik's talk at Baruco Conf.

Flay analyzes code for structural similarities. Differences in literal values, variable, class, method names, whitespace, programming style, braces vs do/end, etc are all ignored. Making this totally rad.

Flog reports the most tortured code in an easy to read pain report. The higher the score, the more pain the code is in.

Code smell detector for Ruby.

A fist full of code metrics.

A utility for finding suboptimal Ruby class API usage, focused on runtime analysis.

Quick automated code review of your changes.

A code metric tool for rails projects.

A Ruby code quality reporter.

A Ruby library for carefully refactoring critical paths.

Code coverage for Ruby 1.9+ with a powerful configuration library and automatic merging of coverage across test suites.

A static type checker for Ruby.

A Ruby gem that helps you refactor your legacy code.

A Rake task gem that helps you find the dead routes and actions for your Rails 3+ app

Complexity analysis tool with a rich web front-end.

A dependentless SQL and SQL errors formatting and colorizing. ActiveRecord seemless integration.

A prettier plugin for the Ruby language.

A static code analyzer, based on the community Ruby style guide.

Ruby Style Guide, with linter & automatic code fixer

Fast and easy syntax highlighting for selected languages.

A Ruby wrapper for the Python pygments syntax highlighter.

A pure Ruby code highlighter that is compatible with Pygments.

An efficient and thread-safe Ruby code loader.

Ruby Tricks, Idiomatic Ruby, Refactoring & Best Practices.

Writing Fast Ruby. Collect Common Ruby idioms.

Fundamental programming ruby with examples. Threads, design patterns, data structures, OOP SOLID principle, algorithms.

Community-driven Rails best practices and style for Rails 3 and 4.

Better Specs { rspec guidelines with ruby }.

Community-driven Ruby coding style.

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

An event-driven I/O and lightweight concurrency library for Ruby.

brain-dead simple parallel processing for ruby.

Run any code in parallel Processes (> use all CPUs) or Threads (> speedup blocking operations). Best suited for map-reduce or e.g. parallel downloads/uploads.

Fine-grained concurrency for Ruby.

Configuration library for Ruby gems and applications, supporting multiple sources (yml, secrets) and environments.

Surprisingly customizable convention-based approach to managing your app's configuration.

Simple and feature rich configuration system for Ruby apps.

Helps you easily manage environment specific settings.

Loads environment variables from .env.

Flexible configuration for Rails applications.

ensure presence and type of your app's ENV-variables

The simplest YAML to ENV config loader.

Simple, Heroku-friendly Rails app configuration using ENV and a single YAML file.

Provides accessor methods for your configuration data.

Multi-environment yaml settings for Rails3.

A lightweight Rails engine that brings an admin panel for managing configuration settings on a live Rails app.

Addressable is a replacement for the URI implementation that is part of Ruby's standard library. It more closely conforms to RFC 3986, RFC 3987, and RFC 6570 (level 4), providing support for IRIs and URI templates.

Fast, memory efficient bitwise operations on large binary strings

Small, focused, incredibly useful methods added to core Ruby classes. Includes the endlessly useful nil_chain.

A tiny library that lets you map a DSL (domain specific language) to your Ruby objects in a snap.

Efficient, immutable, and thread-safe collection classes for Ruby.

Lightweight, non-monkey-patch class utilities for Hanami and Ruby app.

Memoize any instance/class/module method, including support for frozen objects - rigorously tested and benchmarked on all Rubies - fast performance of memoized reads.

The premiere collection of general purpose method extensions and standard additions for Ruby.

Assorted Ruby classes and methods to simplify and enhance your code.

A repository of geographic regions.

All sorts of useful information about every country packaged as pretty little country objects.

country/language names and 2-letter-code pairs, in 85 languages, for country/language i18n.

Convert country names and codes to a standard, includes a conversion program for XMLs, CSVs and DBs.

Ruby gem for phone validation and formatting using Google libphonenumber library data.

Fast international phone number (E164 standard) normalizing, splitting and formatting.

Postal code / zipcode validation for Rails, supporting 233 country codes.

An open source Ruby on Rails based customer relationship management platform.

An open source Ruby on Rails based community management solution.

Build your own blockchains with crypto hashes; revolutionize the world with blockchains, blockchains, blockchains one block at a time.

Ruby implementation of Ethereum.

A Ruby implementation of Bitcoin HD Wallets (Hierarchical Deterministic) BIP32.

Most Advanced Cryptocurrency open-source assets exchange.

Simple data viewer using only SQL. Output to table, chart, and maps.

The exceptionally handsome dashboard framework for Rails.

A gem for creating workflows that "enhance" entities with extra attributes. At a high level, attr-gather provides a process to fetch information from many data sources (such as third party APIs, legacy databases, etc.) in a fully parallelized fashion.

Fast Ingestion of CSV files into hashes with automatic header handling, type conversion, clean-up, and protection against Ruby CSV's silent data corruption. Also exports CSV.

A modern tabular data (line-by-line records) reader supports "classic" CSV but also CSV Numerics, CSV <3 JSON, CSV <3 YAML, tab, space or fixed width fields (FWF) and many more flavors and dialects.

Stream JSON data based on various criteria (key, nesting level, etc).

The open-source reverse ETL, data activation platform developed using Ruby and Ruby on Rails.

It Provides Snowball algorithm for stemming purposes.

Create beautiful generative geometric background images from a string.

A simple and extremely flexible way to use HighCharts from ruby code. Tested on Ruby on Rails, Sinatra and Nanoc, but it should work with others too.

Awesome charts for your ruby app. Works on any ruby app, including Rails app. It even works on plain HTML+ERB files.

Ruby on Rails 3/4 model and controller UML class diagram generator.

Generate Entity-Relationship Diagrams for Rails applications.

Ruby interface to the GraphViz graphing tool.

A pure ruby driver for Apache Cassandra with asynchronous io and configurable load balancing, reconnection and retry policies.

MongoDB Ruby driver.

A modern, simple and very fast Mysql library for Ruby (binding to libmysql).

A thin Ruby wrapper to the Neo4j Rest API.

Lightweight Redis Client.

A Ruby client that tries to match Redis' API one-to-one, while still providing an idiomatic interface.

Ruby interface to PostgreSQL 8.3 and later.

Ruby bindings for the SQLite3 embedded database.

The SQL Server adapter for ActiveRecord.

FreeTDS bindings for Ruby using DB-Library.

A performance-oriented C library for MySQL-compatible databases.

Generic connection pooling for Ruby, that can be used with anything, e.g. Redis, Dalli, etc.

Database Cleaner is a set of strategies for cleaning your database in Ruby.

An easy way to check that application constraints and database constraints are in sync.

Adds foreign key helpers to migrations and correctly dumps foreign keys to schema.rb.

Online MySQL schema migrations without locking the table.

Scan your models and displays a list of columns that probably should be indexed.

Catch unsafe PostgreSQL migrations in development and run them easier in production.

Creates sample database snapshots to work with real world data in development.

Postgres insights made easy.

Database Viewer and SQL Query Runner.

Database constraints made easy for ActiveRecord.

Versioned database views for Rails.

SchemaPlus provides a collection of enhancements and extensions to ActiveRecord

Seamless second database integration for Rails. SecondBase provides support for Rails to manage dual databases by extending ActiveRecord tasks that create, migrate, and test your application.

Seedbank allows you to structure your Rails seed data instead of having it all dumped into one large file.

Rails 4 task to dump (parts) of your database to db/seeds.rb.

Advanced seed data handling for Rails.

Read from standby databases for ActiveRecord (formerly Slavery).

Catch unsafe migrations in development.

Upsert on MySQL, PostgreSQL, and SQLite3. Transparently creates functions (UDF) for MySQL and PostgreSQL; on SQLite3, uses INSERT OR IGNORE.

Time calculations using business hours.

Support for doing time math in business hours and days.

Find ActiveRecord objects by year, month, fortnight, week and more!

A natural language date/time parser written in pure Ruby.

The simple tool to make work with date ranges in Ruby more enjoyable.

The simplest way to group temporal data in ActiveRecord, arrays and hashes.

A collection of Ruby methods to deal with statutory and other holidays.

A date recurrence library which allows easy creation of recurrence rules and fast querying.

A Ruby library to compute distance of dates in words, with localization support, alternative styles, CLI and Jekyll support.

Rails Engine for cache-friendly, client-side local time.

a simple library for expressing, serializing, and enumerating recurring events in Ruby.

Format dates and times based on human-friendly examples, not arcane strftime directives.

Calculates the difference between two time.

Accurate current and historical timezones and transformations, with support for Geonames and Google latitude - longitude timezone lookups.

Provides daylight savings aware transformations between times in different timezones.

Date and time validation plugin for ActiveModel and Rails.

A modern ruby gem allowing to do time calculation with working hours.

Tiny DSL for idiomatic date parsing and formatting.

A simple to use, feature rich debugger for Ruby 2.

Adds class, method & attribute suggestions to error messages.

Pry navigation commands via byebug.

Avoid repeating yourself, use pry-rails instead of copying the initializer to every rails project. This is a small gem which causes rails console to open pry. It therefore depends on pry.

Displays the results of every line of code in your file.

A tool that allows you to inspect your program from an Object's perspective.

A development tool that reveals your UI's bones.

Draper adds an object-oriented layer of presentation logic to your Rails application.

A helper for creating declarative interfaces in controllers.

A set of Rails responders to dry up your application.

Quickly show a model information with I18n features. Like form_for for displaying model data.

Provides an elegant DSL in Ruby for performing backups on UNIX-like systems.

Cloud Foundry BOSH is an open source tool chain for release engineering, deployment and lifecycle management of large scale distributed services.

A mass deployment tool for Docker fleets.

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Einhorn will open one or more shared sockets and run multiple copies of your process. You can seamlessly reload your code, dynamically reconfigure Einhorn, and more.

Simple and lightweight configuration management tool inspired by Chef.

Manage remote infrastructure in Ruby

Logs/event transport, processing, management, search.

Kamal offers zero-downtime deploys, rolling restarts, asset bridging, remote builds, accessory service management, and everything else you need to deploy and manage your web app in production with Docker.

Really fast deployer and server automation tool.

An automated administrative engine for your Linux, Unix, and Windows systems, performs administrative tasks (such as adding users, installing packages, and updating server configurations) based on a centralized specification.

The rubber plugin enables relatively complex multi-instance deployments of RubyOnRails applications to Amazon's Elastic Compute Cloud (EC2).

SSH private and public key generator in pure Ruby (RSA & DSA).

Server provisioning utility for minimalists

Native ruby binding for Linux containers.

Easy Diffing With Ruby.

Find source repositories for gems. Open, compare, and update outdated gem versions.

Returns the difference between two JSON files.

Ruby and Ruby on Rails bookmarks collection.

Find what repositories the GitHub community is most excited about today.

Find what repositories the GitHub community is most excited about today.

Adds database schema annotations for your ActiveRecord models as text comments as well as routes. An active and maintained hard fork of Annotate.

Rails API documentation and display tool using Ruby syntax.

A Rails engine to provide the ability to add documentation to a Rails application.

Library add improve test log for RSpec and WebMock, validate its according to API Blueprint and Open API, show the documentation coverage with log.

Automatically generate change log from your tags, issues, labels and pull requests on GitHub.

A simple, Git-powered wiki with a sweet API and local frontend.

Add swagger compliant documentation to your Grape API.

An RDoc formatter built with simplicity, beauty and ease of browsing in mind.

A markdown based documentation system for style guides. It parses comments in your CSS and helps you turn them into a beautiful style guide.

Inch is a documentation measurement and evalutation tool for Ruby code, based on YARD.

RDoc produces HTML and command-line documentation for Ruby projects.

Automatically generate API documentation from RSpec.

A simple payment abstraction library extracted from Shopify.

Braintree Ruby bindings.

Conekta Ruby bindings.

A ruby gem for validating credit card numbers, generating valid numbers, Luhn checks.

Official Paypal Merchant SDK for Ruby.

A Rails e-commerce platform.

An open source, eCommerce application for high volume retailers.

Spree is a complete open source e-commerce solution for Ruby on Rails.

Square's SDK for payments and other Square APIs.

Stripe Ruby bindings.

An extensible, high-performance eCommerce platform depended on by some of the world's top retailers.

Bookshop is a an open-source agile book development and publishing framework for authors, editors.

A generic EPUB library for Ruby : supports EPUB 3.

A Ruby way to read MOBI format metadata.

Re:VIEW is flexible document format/conversion system.

Analytics and tracking for e-mails.

API wrapper for the Mailchimp e-mail marketing platform.

Simplify receiving email in Rails.

Incoming! helps you receive email in your Rack apps.

Preview mail in the browser instead of sending.

A Really Ruby Mail Library.

Send e-mail straight from forms in Rails with I18n, validations, attachments and request information.

A Rails Engine to manage, test and navigate through all your email templates of your app, being able to preview them directly in your browser.

The express way to send mail from Ruby.

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

CSS styled emails without the hassle.

Roadie tries to make sending HTML emails a little less painful by inlining stylesheets and rewriting relative URLs for you inside your emails.

A curses threads-with-tags style email client.

The highly customizable ruby SMTP-Service library with builtin support for AUTH and SSL/STARTTLS, 8BITMIME and SMTPUTF8, IPv4 and IPv6 and more.

bcrypt-ruby is a Ruby binding for the OpenBSD bcrypt() password hashing algorithm.

Ruby binding to the Networking and Cryptography (NaCl) library.

A time-saving symmetric encryption gem based on OpenSSL that uses 256bit (password-encrypted) keys. Read the key from STDIN, a file, ENV or, on a Mac: OS-X Keychain.

crypto library for painless data security, providing symmetric and asymmetric encryption, secure sockets with forward secrecy, for mobile and server platforms.

Change your current Ruby. No shims, no crazy options or features, ~90 LOC.

Simple ruby version manager for fish.

A tool for changing your $GEM_HOME.

Use rbenv to pick a Ruby version for your application and guarantee that your development environment matches production.

Compile and install Ruby.

Installs Ruby, JRuby, Rubinius, MagLev or MRuby.

Uru is a lightweight, multi-platform command line tool that helps you use the multiple rubies on your 32/64-bit Linux, OS X, or Windows systems.

Ruby, Rails, SQLite and Redis encapsulated in a single drag-and-drop OS X app, designed to make installing a working RoR environment easy for beginners.

The official Airbrake library for Ruby on Rails (and other Rack based frameworks).

Better error page for Rack apps.

Error monitoring for Rails, Sinatra, Rack, and plain Ruby apps.

The open source, self-hosted error catcher.

Custom error pages.

A set of notifiers for sending notifications when errors occur in a Rack/Rails application.

Nested exceptions for Ruby.

The Ruby client for Sentry.

Easy and powerful exception and error tracking for your applications.

message store.

A library for publishing, consuming, storing and retrieving events. It's your best companion for going with an event-driven architecture for your Rails application.

A Rails Engine framework that helps safe and rapid feature prototyping.

Feature flipping for ANYTHING. Make turning features on/off so easy that everyone does it. Whatever your data store, throughput, or experience.

Feature flippers.

Rack Based AB testing framework.

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.

an A/B testing framework for Rails that is datastore agnostic.

Standalone image and file server to decouple your app from file management concerns.

Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks.

A Ruby gem for on-the-fly processing - suitable for image uploading in Rails, Sinatra and much more!.

Easy file attachment management for ActiveRecord. Deprecated as of May 14, 2018.

Upload files securely.

A modern file upload library for Ruby applications, Refile is an attempt by CarrierWave's original author to fix the design mistakes and overengineering in CarrierWave.

Toolkit for handling file uploads in Ruby.

A command line tool to easily handle events on file system modifications.

Automatically reload your browser when 'view' files are modified.

The Listen gem listens to file modifications and notifies you about the changes.

Restarts an app when the filesystem changes. Uses growl and FSEventStream if on OS X.

A simple CLI to watch file changes and run their matching Ruby specs. Works on any ruby projects with no setup.

Dynamic nested forms using jQuery made easy; works with formtastic, simple_form or default forms.

Rails form builder that makes it easy to create forms with Bootstrap 4 markup

A Rails form builder plugin with semantically rich and accessible markup.

Rails form builder that makes it super easy to create beautiful-looking forms with Twitter Bootstrap 3+.

Making dynamic surveys should be easy!

Gives you a form object with validations and nested setup of models. It is completely framework-agnostic and doesn't care about your database.

Rails forms made easy.

Mittsu makes 3D graphics easier by providing an abstraction over OpenGL, and is based heavily off of THREE.js.

Create cross-platform 2D applications, games, and visualizations with ease.

Taylor is a game engine built using mruby and raylib.

A command line interface for smithing new Ruby gems.

A drop in replacement for geminabox written in Go.

Really simple rubygem hosting.

Gem to automatically make a rubygems mirror.

A RubyGems.org cache and private gem server.

A complete geocoding solution for Ruby. With Rails it adds geocoding (by street or IP address), reverse geocoding (find street address based on given coordinates), and distance queries.

Searches a GeoIP database for a given host or IP address, and returns information about the country where the IP address is allocated, and the city, ISP and other information.

Geokit gem provides geocoding and distance/heading calculations.

Enables easy Google map + overlays creation in Ruby apps.

A Ruby SDK allows user to query for an enriched data set based on IP address and provides WHOIS lookup api that helps users to obtain domain information.

Geospatial data library. Spatial data types, geometric and spherical calculations, and WKT/WKB serialization.

A web frontend for Git repositories.

Find the commit that broke master.

Peruse and delete git branches ergonomically.

An automated quality control workflow for Agile teams.

Dig through git blame history.

Find which merge a commit came from.

A fully configurable and extendable Git hook manager.

Ruby bindings to libgit2.

A query batching executor.

A library for declaring, composing and executing GraphQL queries.

A simple field-level authorization.

Ruby implementation of GraphQL.

A Ruby library that provides an interface to the FOX GUI toolkit.

Ruby DSL for SWT

Allows the QT Gui toolkit to be used from Ruby.

Ruby language bindings for the GNOME development environment.

Object to XML mapping library, using Nokogiri.

HTML processing filters and utilities.

High-performance HTML5 parser based on Lexbor, with support for both CSS selectors and XPath.

A fast XML parser and Object marshaller.

Custom mapping and bidirectional marshalling between Ruby and XML using annotation-style class methods, via Nokogiri or LibXML.

A tiny library for parsing the Accept-Language header from browsers (as defined in RFC 2616).

Usable, fast, simple Ruby HTTP 1.1. It works great as a general HTTP(s) client and is particularly well suited to usage in API clients.

an HTTP client lib that provides a common interface over many adapters (such as Net::HTTP) and embraces the concept of Rack middleware when processing the request/response cycle.

A precise and fast user agent parser and device detector, backed by the largest and most up-to-date user agent database.

Gives something like the functionality of libwww-perl (LWP) in Ruby.

The HTTP Gem: a simple Ruby DSL for making HTTP requests.

Pure ruby HTTP client, supports HTTP/2 and HTTP/1, concurrent requests, plugin system for extended features (cookies, retries, following redirects, proxy, streaming...).

Makes http fun again!

Pure Ruby implementation of HTTP/2 protocol

Patron is a Ruby HTTP client library based on libcurl.

Simple HTTP and REST client for Ruby, inspired by microframework syntax for specifying actions.

Cross-Origin Resource Sharing (CORS) middleware for Rack applications.

Savon is a SOAP client for the Ruby programming language.

Secret user agent of HTTP, built on top of Faraday.

Tool to log and debug outgoing HTTP requests across multiple ruby libraries.

Typhoeus wraps libcurl in order to make fast and reliable requests.

FastImage finds the size or type of an image given its uri by fetching as little as needed.

High-level image processing wrapper for libvips and ImageMagick/GraphicsMagick

A ruby wrapper for ImageMagick or GraphicsMagick command line.

Ruby wrapper around pHash, the perceptual hash library for detecting duplicate multimedia files.

Parse Photoshop files in Ruby with ease.

RMagick is an interface between Ruby and ImageMagick.

A binding for the libvips image processing library.

Skeptick is an all-purpose DSL for building and running ImageMagick commands.

A Java implementation of the Ruby language.

Lightweight Ruby. Can be linked and embedded in your application.

Natalie is a Ruby compiler that provides an ahead-of-time compiler using C++ and gcc/clang as the backend.

Ruby to Javascript compiler.

An implementation of the Ruby programming language. Rubinius includes a bytecode virtual machine, Ruby syntax parser, bytecode compiler, generational garbage collector, just-in-time (JIT) native machine code compiler, and Ruby Core and Standard libraries.

A high performance implementation of the Ruby programming language. Built on the GraalVM by Oracle Labs.

Ruby internationalization tool with less memory, simple, clean namespace and threadsafe.

Globalize builds on the I18n API in Ruby on Rails to add model translations to ActiveRecord models.

Manage missing and unused translations with the awesome power of static analysis.

Ruby Internationalization and localization solution.

Minimalistic, flexible and fast Internationalization library. It supports localization, interpolations, pluralization, fallbacks, nested keys and more.

Repository for collecting Locale data for Rails I18n as well as other interesting, Rails related I18n stuff.

Advanced i18n library for Rails, Sinatra, desktop apps, models, works well with complex languages like Russian.

Translations with speech synthesis in your terminal.

A web interface for doing i18n translations packaged as a Rails engine.

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

Access to the system clipboard on Linux, MacOS and Windows.

IRB with Kata(型 Type) completion.

Improvements for Ruby's IRB.

A tool for illustrating the ancestry and method lookup path of objects. Handy for exploring unfamiliar codebases.

A powerful alternative to the standard IRB shell for Ruby.

Fluentd collects events from various data sources and writes them to files, database or other types of storages.

Log outgoing HTTP requests.

Log4r is a comprehensive and flexible logging library for use in Ruby programs.

A flexible logging library for use in Ruby programs based on the design of Java's log4j library.

An attempt to tame Rails' default policy to log everything.

A structured logging system that is capable of handling a message, structured data, or an exception easily. It has JSON and human-readable formatters.

Simple logging.

A drop-in replacement for the standard Logger Ruby library, that logs to the syslog instead of a log file.

Your Extensible Logging Library.

Algorithms covering several Artificial intelligence fields.

A Curated List of Ruby Machine Learning Links and Resources.

Library for building LLM-powered applications in Ruby.

A CLI tool to transpile trained classic ML models into a native Ruby code with zero dependencies.

The PredictionIO Ruby SDK provides a convenient API to quickly record your users' behavior and retrieve personalized predictions for them.

Ruby language bindings for LIBSVM. SVM is a machine learning and classification algorithm.

Ruby library for interfacing with FANN (Fast Artificial Neural Network).

OpenAI API + Ruby!

A machine learning library with interfaces similar to Scikit-Learn.

The end-to-end machine learning platform for Ruby.

Deep learning for Ruby, powered by LibTorch.

Machine learning and data mining algorithms for JRuby.

Kramdown is yet-another-markdown-parser but fast, pure Ruby, using a strict syntax definition and supporting several common extensions.

A pure-Ruby Markdown-superset interpreter.

A fast, safe and extensible Markdown to (X)HTML parser.

Gem to convert Microsoft Word documents to Markdown.

A powerful tool that allows you to effortlessly download and convert your Medium posts to Markdown format.

Wrapper objects which encapsulate measurements and their associated units in Ruby.

Provides classes and methods to perform unit math and conversions.

Try any Android library on your smartphone directly from the command line.

Connect all iOS deployment tools into one streamlined workflow.

Real-time Push Service in the Cloud.

A platform for developing full stand-alone apps for Android using the Ruby language and libraries.

A gem that calculates the exchange rate using published rates from European Central Bank.

A library for converting various objects into Money objects.

A Ruby Library for dealing with money and currency conversion.

A music theory library with a command-line interface.

A Slack-Powered music bot for Spotify

A live coding synth for everyone originally designed to support computing and music lessons.

Awesome List for Practical Natural Language Processing done in Ruby.

Ruby speech recognition with Pocketsphinx.

Pragmatic Segmenter is a rule-based sentence boundary detection gem that works out-of-the-box across many languages.

Collection of links to Ruby Natural Language Processing (NLP) libraries, tools and software.

English spelling and grammar checker that can be used for autocorrection.

Simple sentiment analysis with Ruby.

A collection of text algorithms including Levenshtein distance, Metaphone, Soundex 2, Porter stemming & White similarity.

Ruby gem for text readability analysis. Calculate readability statistics using 13 proven formulas (Flesch, SMOG, Coleman-Liau, etc.) with support for 22 languages.

Treat is a toolkit for natural language processing and computational linguistics in Ruby.