Restforce is the most popular Ruby gem for interacting with the Salesforce API, downloaded over 5,000,000 times.
I'm the core maintainer, having taken the gem over from the original author in 2015. I review issues, get pull requests merged and reguarly contribute my own code to the library.View on GitHub
Ruby on Rails is a hugely popular web framework built in Ruby.
I've made a number of contributions, fixing a number of bugs (including this odd issue with parameter handling in
ActionController::Parameters) and added new features making it easy to configure your web application for use over SSL.
Onfido provide APIs to verify people's identities and conduct background checks on your users, for example to comply with anti-money laundering regulations.
The Onfido Ruby gem provides an idiomatic Ruby wrapper around their REST API.View on GitHub
Genius aims to build the world's biggest collection of song lyrics and musical knowledge - this mission has led it to being one of the web's most popular sites.
My Genius gem provides a Ruby wrapper around their developer API. It involved from my original and more popular timrogers/rapgenius gem, with 100 stars on GitHub, built by tapping into RapGenius (as they were then known)'s private API by conducting a man-in-the-middle attack on their iOS app.View on GitHub
A custom Alexa skill allowing you to charge your friends by Direct Debit using GoCardless, written in Ruby.View on GitHub
A simple tool built in Ruby for exam revision, helping you to memorise course content.View on GitHub