RQuest makes it easy to build request and gives you full control over every aspect of the request. I modeled it after the chrome extension postman. Everything you can do with postman you can do with RQuest and it follows the same intuitive work flow. It also has support for session managment.

A comprehensive and easily extensible Ruby library which simplifies interaction with the Meetup.com API

Opencast Matterhorn REST API ruby library : REQUIRES Matterhorn 1.2+

JetBrains youTrack Rest API Client in Ruby. Forked from youtrack gem (by John Faucett)

Bulk import data using the Shopify GraphQL Admin Bulk API

simple_tweet provides tweet, tweet_with_media

A Ruby library for interacting with the Sirportly API.

Simple Slack API wrapper for ruby

SlidayBackup is a RubyGem, written for UNIX-like operating systems, that allows you to easily perform backup operations on both your remote and local environments. It provides you with an elegant DSL in Ruby for modeling your backups. SlidayBackup has built-in support for various databases, storage protocols/services, syncers, compressors, encryptors and notifiers which you can mix and match. It was built with modularity, extensibility and simplicity in mind.

SmartCat API SDK for ruby & ruby on rails.

Square Connect API

Static.com Cloud Command Line Client

Help keep track of stuff (good for electronics)

Ruby wrapper for Streamios API.

Superbot Cloud

A gem wrapper for the Teamwork.com API. (Homepage: http://www.teamwork.com/ API Docs: http://developer.teamwork.com)

A Ruby wrapper to the Teamwork PM API

A gem wrapper for the TeamworkPM API TeamworkPM: http://www.teamworkpm.net/ API: http://developer.teamworkpm.net/api

Ruby wrapper for Telesocial API

The texd project provides a network reachable TeX compiler. This gem is a client for that.