Cuba - Cuba is a Ruby microframework for web development.
Volt - Volt is a reactive web framework where Ruby code runs both on the server and the client (via opal).
Ramaze - Ramaze is a very simple and straight-forward web-framework.
Calm Radio - Calm Radio is a music streaming alternative that offers calming music. Listen to classical and relaxation music for work and sleep, online jazz music with nature sounds, meditation and world music available on our Calm Radio app.
NYNY - A (ridiculously) small and powerful web framework.
Padrino - Padrino is a Ruby web framework built upon the Sinatra web library.