Let designers design with Rails in mind without the complication of having to learn or install Rails

Stylus JavaScript Templates in the asset pipeline.

Provides most common js libs with sprockets.

All the stuff that make front end web development fun, in one simple toolkit

Develop mobile application using apache cordova and ruby utilities.

A heartwarming gem to inline SVG. SVG Hearts You provides helper methods to inline SVG. You can directly inline for maximum CSS control, or symbolize a file or folder of SVGs and reuse the symbols.

Tay helps you develop Chrome extensions

A static site generator utilizing Haml and Sass

This gem provides Handlebars magic for your Rails 3 application.

Tent app for 140 character posts. Uses Sinatra/Sprockets + CoffeeScript

Jekyll plugin, that allows you to write javascript/css assets in other languages such as CoffeeScript, Sass, Less and ERB, concatenate them, respecting dependencies, minify and many more.

With themify you can handle multiple themes and generate css and js files

Jade is a high performance template engine heavily influenced by Haml and implemented with JavaScript for node.

Tipsy is a mini Rack application for working with static websites using Tilt, and Sprockets.

Development tools of TogoStanza

Traceur Compiler supported Javascript with Sprockets

A simple Sprockets engine that puts training wheels on your Handlebar templates (wraps them up and adds them to Ember's global TEMPLATE variable)

An ice cold mobile web development framework

The gem exports Rails assets to TypeScript as React components.

Monkey patches turbolinks to morph your dom between two different pages rather than just subbing out the body.