Crunchbase4 is a ruby wrapper base on Crunchbase V4 API, it provides easy to get the API data by each endpoint.

cta_redux takes the data provided by the CTA in its various forms, and turns it into a clean, cohesive client API that can be used to easily build a transit related project. Using Sequel, we integrate GTFS scheduled service data with live data provided by the CTA's various APIs (like BusTracker, TrainTracker, and the CTA customer alerts feed.

Cumulus API Ruby Wrapper

Unofficial ruby's custom_gateway sdk

Cymon is the largest open tracker of malware, phishing, botnets, spam, and more. Brought to you by eSentire.

This Api is meant for 3rd party integrations

A gem for using the CyprusPost: Postal Codes API (https://documenter.getpostman.com/view/6477303/RztmtUjG)

Diablo 3 API ruby wrapper

Gem to generate random popular Dad Jokes. Features include: Generating jokes, Search for jokes, Save a random joke as image (as .png), etc

Dailymotion Open Graph API for Ruby

Ruby Gem for Dandelion's dataTXT service (dandelion.eu)

Datmachine is a business intelligence solution for Internet companies.

Dump a DatoCMS space as data files into your static website generator tool.

Interface for api.dclite.app service API

A reference implementation, written in Ruby, to interact with GovDelivery's DCM API.

API wrapper for the DealerVault API

http://docs.deis.io/en/v1.3.0/reference/api-v1.0/

Ruby gem for Delhivery REST API

Ruby wrapper for delicious.com API

Client library for DEnCity.org.