Volt - Volt is a reactive web framework where Ruby code runs both on the server and the client (via opal).
Appolo - Static app portfolio for developers
Grid50 - The Marketplace for Photographers & Videographers
GPortfolio - Create an automatic portfolio based on Github profile.
KitSplit - Airbnb for creative equipment - rent cameras, drones & more
Webfolio - Showcases your best code to startups and get hired