CSteamer "steams" your content for data you can use in an organized way, such as a summary/first paragraph, del.icio.us tags, first image used in the content block, etc.

CSV++

This gem turns the existing API endpoints of the CTA Tracker into a ruby library for getting routes and times.

CTG is a Ruby library that provides an interface for querying the ClinicalTrials.gov API. It supports both JSON and CSV formats, pagination, and complex queries.

API Library for CallTrackingMetrics

Searches for issues on Github/Google Code/custom Redmine instances/local files for current project or folder.

This gem allows your Rails-built microservice to register itself on Control Tower

This gem offers a DSL on top of webmock, cucumber and json_spec to make testing APIs on rails easier

Integration library for CueCloud and Ruby

Cukebase provides integration between Cucumber and the Codebase ticketing system

The Fourth Amigo

Ruby Library for the currencylayer API, Reliable Exchange Rates & Currency Conversion, https://currencylayer.com/

A gem to get the current exchange rate.

Small gem to work with list of astronauts currently in space. Raw JSON data is available, along with a few methods for accessing specific portions of the data and print out a formatted list.

A ruby stock price & option chain crawler

A custplace api for retrieve info

A Scraping DSL

Cutara is the bridge between Tarantula and Cucumber

Command-line tool to search the NIST National Vulnerability Database for CVE reports associated with a specific product and version.

A simple wrapper for ConWorkShop's (http://conworkshop.com) API in Ruby.