Waitress is a lightweight, fast Ruby Web Server with the ability to serve dynamic webpages, manage libraries and support for virtual hosts and much more

Uses the actual JavaScript implementation of walrus.js, but supports using Ruby objects as template contexts and Ruby procs as view functions and named helpers

Sistema administrativo para site

Test your javascript with no server, no browser, just pleasure.

Support to help you develop Zendesk Apps.

Simple sinatra-based web-interface to view git repository history

This gem provides zxcvbn.js for your Rails 3 application via the asset pipeline.