A gem for interacting with the GeoIP2 webservices and databases. MaxMind provides geolocation data as downloadable databases as well as through a webservice.

A Ruby SDK for use with Optimizely Feature Experimentation, Optimizely Full Stack (legacy), and Optimizely Rollouts

Easy way to retrieve Google Page Rank, Alexa Rank, backlink counts, index counts and different types of social signals

A Rails interface for Intuit's Quickbooks Web Connector that's OPEN SOURCE!

[](http://travis-ci.org/estately/rets) A pure-ruby library for fetching data from [RETS] servers. If you're looking for a slick CLI interface check out [retscli](https://github.com/summera/retscli), which is an awesome ...

Easy to use gem to send iOS, Android and Windows Phone Push notifications

The core methods of the Skylight profiler.

APICache allows any API client library to be easily wrapped with a robust caching layer. It supports caching (obviously), serving stale data and limits on the number of API calls. It's also got a handy syntax if all you want to do is cache a bothersome url.

Protect your carrierwave from image bombs

API client for clearbit.com

[DEPRECATED] A ruby wrapper for the Force.com REST API. Try restforce instead: https://github.com/ejholmes/restforce

The Ruby Gem that Powers Entitlements - GitHub's Identity and Access Management System

A Gem for handling FHIR client requests in ruby

Simple wrapper for the Goodreads API

Instrument your Ruby apps with Honeycomb

Ruby gem for sending data to Honeycomb

LinkedIn strategy for OmniAuth.

Puppet module tools for development and Puppet Forge management

Simple CAS authentication for Rails, Sinatra or any Rack-based site

A batteries-included API wrapper for reddit.