Duo Universal Rails gem allows a webb developer to quickly add Duo's interactive, self-service, two-factor authentication to any Ruby on Rails web authentication form.

CLI and Ruby client library for duse

API documentation http://www.dutycalculator.com/api-center/dutycalculator-api-2-1-documentation/

e3db client SDK

http://developer.ean.com/docs/read/hotels/Version_3

EasyCron API Ruby Client.

An ephemeral database provider

Simple gem for EasyQA API

Ebisu is the yahoo item search api cilent.

Ecertic provides digital signature and KYC services.

ECS Claims Ruby Wrapper

EdgeCast Web Services REST API Ruby wrapper.

SDK for Ekispert Web Service

ElasticSearch ruby client.

Elder Scrolls: Legends SDK is a wrapper around the Elder Scrolls: Legends API located at https://elderscrollslegends.io

An ellen handler to weather from livedoor API

This gem provides a nice ruby interface to work with Oracle Eloqua's REST API

Ruby client to interact with Elrond's REST API.

API wrapper for use in conjunction with an Elvanto account. This wrapper can be used by developers to develop programs for their own churches using an API Key, or to design integrations to share to other churches using OAuth authentication.

Ruby client to make it easier to use the API of emarsys B2C MC