The spark_api gem handles most of the boilerplate for communicating with the Spark API rest services, including authentication and request parsing.

For Libraries, a just-in-time last-mile service aggregator, taking OpenURL input

A Ruby wrapper for accessing Yammer's REST API

This library provides Ruby calls to interact with the Avalara Tax API

Buffer is an API Wrapper Gem for Bufferapp.com's API

for testing json-api

High-level library for working with the Cloud Foundry API.

Provides data about world cities in Ruby. Data from the Maxmind database.

A CLI Tool for managing your dotfiles

A simple ruby wrapper around the Echonest API

integrate the elastic search engine with rails

Expedia is a lightweight, flexible Ruby SDK for EAN. It allows read/write access to the EAN APIs.

Git Post-Receive hook for Flowdock. Gem requirements patched for use with Gitlab.

A simple way to check your app heart.

Ruby Client for Instapaper's Full API

Ruby wrapper for JSHint. The main difference from jshint gem it does not depend on Java. Instead, it uses ExecJS

Generates and outputs JSON in well-sized chunks

Keyboard firmware generator using qmk_firmware - from Fusion JSON

Joyent CloudAPI Support for Chef's Knife Command

NSQ ruby library