SimpleTumblr provides a simple – ActiveRecord::Relation like – way to interact with the Tumblr API.

Simple WeChat API wrapper

Simplified ver. of WhatWeb.

Woofound Client Gem

Simple interface for SimpleDB.

This gem provides a SimplyRETS SDK for creating real estate software with RETS data

Simulator rest server

Client for Sinatra API applications

Sinatra adapter for use with exceptional

Geoloqi adapter for Sinatra, quickly allows you to make applications

Provides some boilerplate helpers and routes for Shopify apps with Sinatra 1 & Sinatra 2

A library for communicating with the Sinch Rest API

A Ruby client library for accessing the SinglePlatform API.

Singularity Client

Provides the necessary functionality to work with Magnolia-managed content in a Rails application.

Timwe provider for Sisal

Light API client to communicate with Sisense API

A simple Ruby implementation for handeling iDeal transactions with the Sisow API

A ruby libary for the Sistrix web API

A simple tool for checking references on your website