See http://sweetjs.org for more information about Sweet.js macros

This gem provides Handlebars magic for your Rails 3 application.

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

Traceur compiler

Traceur Compiler supported Javascript with Sprockets

Turf.js is an advanced geospatial analasis library for GeoJSON data.

Ruby TypeScript is a bridge to the JS TypeScript compiler.

Ruby TypeScript is a bridge to the JS TypeScript transpiler.

Underworld is a ruby on rails engine which provides a platform to easily build a web application. Features like Dashboard, complex code generation and other awesome features. For more information checkout the docs.

Vision is a Rails Way dashboard, built as a simple alternative to ActiveAdmin.

A library to work with audios on popular Russian social network

Vue gem for Rails

vue-template-compiler functionality in a gem - compile and parse your vue.js templates

Woodlock is an authentication and user management engine.

The YUICSSMIN gem provides CSS compression using YUI compressor from Yahoo. Unlike other gems it doesn't use the Java applet YUI compressor but instead uses the Javascript port via ExecJS.

Assets server and builder

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