It uses JPL Horizons System API to calculate the accurate solar terms' times and can translate them into different timezones and languages.

Solr Ruby client with a nice object-oriented API

Soundcloud API client, with configurable HTTP backend

Ruby client for Speechmatics API: https://speechmatics.com/api-details

SPID (https://www.spid.gov.it) integration for ruby

A wrapper for the SPOT API

Spree Engine for Conekta Mexican Payment gateway

Ruby wrapper for the sqwiggle API

Ruby CloudStack client and CLI

This is a gem that makes trivial interacting with the Steam Web API

An engine for the Straight payment gateway software. Requires no state to be saved (that is, no storage or DB). Its responsibilities only include processing data coming from an actual gateway.

An Elasticsearch client library

Cache resources

SDK of the Studyplus for School SYNC API for Ruby

Ruby Sumo Logic SDK for the Sumo Logic REST API

Suning Pay 1.1.2 doc.

Swedbank Pay Design Guide theme for Jekyll

SwitchBot API client for Ruby

Simple Client for Swrve API

Ruby gem for Synology Web API