Prawn::Icon provides various icon fonts including FontAwesome, PaymentFont and Foundation Icons for use with the Prawn PDF toolkit.

Prawn Handler for Rails. Handles and registers pdf formats.

A wrapper for the PrinceXML PDF generation library.

A ruby port of puppeteer

Rakismet is the easiest way to integrate Akismet or TypePad's AntiSpam into your Rails app.

A Ruby client for oVirt REST API

A gem for conducting arbitrage with Bitcoin.

Write React UI components in pure Ruby.

Write reactive UI component with Ruby's elegancy and compiled to run in Javascript.

Resource Kit provides tools to aid in making API Clients. Such as URL resolving, Request / Response layer, and more.

Makes sure that for special jobs, there can be only one job with the same workload in one queue. Example: class CacheSweeper include Resque::Plugins::UniqueJob @queue = :cache_sweeps def self.perform(article_id) # Cache Me If You Can... end end

riak-client is a rich client for Riak, the distributed database by Basho. It supports the full HTTP and Protocol Buffers interfaces including storage operations, bucket configuration, link-walking, secondary indexes and map-reduce.

A Ruby API and configuration helper for the Sphinx search service.

The Ruby Language Toolkit provides classes for creating context-free grammars, lexers, parsers, and abstract syntax trees.

Glues rQRCode together with chunky_png

Bootstraps in code required to take advantage of EventMachine/EM-Synchrony's concurrency enhancements for slow IO. Patches TCPSocket, which makes anything based on it EM-aware (including RestClient). Includes patch for tests. Requires Fibers (Ruby 1.9, JRuby and Rubinius in 1.9 mode)

An interface which glues ruby-debug to IDEs like Eclipse (RDT), NetBeans and RubyMine.

Write Through and Read Through caching library inspired by CacheMoney and cache_fu, support ActiveRecord 4.

API wrapper for SOAP and REST API with Salesforce Marketing Cloud (ExactTarget)

Parse RSS, Atom, and JSON Feed with normalized entries, HTTP fetching, website feed discovery, and JSON/XML serialization.