eBayR is a gem that makes it (relatively) easy to use the eBay Trading API from Ruby. Includes a self-contained XML parser, a flexible callback system, and a command-line client which aids integration into other projects.

The simplest way to configure and deploy an Elastic Beanstalk application via rake.

Govkit lets you quickly get encapsulated Ruby objects for common open government APIs. We're starting with Sunlight's Open States API and the Project Vote Smart API.

A basic API for reading and writing GPX files.

This is a simple and easy-to-use Jenkins Pipeline generator with features focused on automating Job & Pipeline creation from the YAML files checked-in with your application source code

A library for dealing with SOAP requests and responses. We tear our hair out so you don't have to.

MediaInfo is a class wrapping the mediainfo CLI (http://mediainfo.sourceforge.net) that standardizes attributes/methods and also converts most values into something Ruby can understand.

Nagios access at your ruby fingertips

The official PagSeguro library

Convert a Rack app into a static HTML site.

Adds simple HTML snippets into Prawn-generated PDFs. All elements are layouted vertically using Prawn's formatting options. A major use case for this gem is to include WYSIWYG-generated HTML parts into server-generated PDF documents.

REST API to Quickbooks Online/Windows via Intuit Data Services

Web page speed optimizations at the Rack level

Defines several standard RDF vocabularies

Recog is a framework for identifying products, services, operating systems, and hardware by matching fingerprints against data returned from various network probes. Recog makes it simply to extract useful information from web server banners, snmp system description fields, and a whole lot more.

DANFE and DACTE pdf generator for Brazilian invoices and transportation docs.

Prepare SSML and GRXML documents with ease

Saxerator is a streaming xml-to-hash parser designed for working with very large xml files by giving you Enumerable access to manageable chunks of the document.

Crawl web sites easily using ruby recipes, with caching and nokogiri.

Test your XML with Test::Unit, MiniTest, RSpec, or Cucumber using handy assertions like #assert_xml_equal or #assert_xml_structure_contain.