Jammit is an industrial-strength asset packaging library for Rails, providing both the CSS and JavaScript concatenation and compression that you'd expect, as well as YUI Compressor and Closure Compiler compatibility, ahead-of-time gzipping, built-in JavaScript template support, and optional Data-URI / MHTML image embedding.

Package your assets for Sinatra.

Web page speed optimizations at the Rack level

Load CSS and JS faster. Minifies, bundles, and optimizes CSS/JS assets ahead of time (e.g., on deploy), not at runtime. Loads popular third-party JS (like jQuery, YUI, and Dojo) from localhost in development, and auto-switches to Google's CDN in production. Lets you switch on LABjs mode to load more scripts in parallel. Can rewrite stylesheets to use CDN hosts (not just your web server) and cache-busting hashes for updated images.

BistroCar serves up {CoffeeScript}[http://jashkenas.github.com/coffee-script/] from within your Rails application.

The nanoc-toolbox is a collection of filters and helpers for the static site generator tool nanoc

Sinatra-support includes many helpers for forms, errors and many amazing things.

Architecture.js helps you generate scaffolding, manage third-party packages, compile, and compress your application.

Utility to create a bookmarklet from a JavaScript file

A rake task to minify javascripts and coffeescripts

Aura is a CMS.

A dangerous Ruby blog engine, with a photographic memory.

Crush is a set of Tilt templates for the various JavaScript and CSS compression libraries in Ruby.

Allow your Rails 3 app to package and process your CSS and JS assets on the fly.

Enphase Fork to get the Rails 4 route compatibility Jammit is an industrial strength asset packaging library for Rails, providing both the CSS and JavaScript concatenation and compression that you'd expect, as well as YUI Compressor and Closure Compiler compatibility, ahead-of-time gzipping, built-in JavaScript template support, and optional Data-URI / MHTML image embedding.

Jammit-Ebtd is a fork of the Jammit asset packager, modified for ebaytoday.ru

Structured, unobtrusive JavaScript for Rails applications

JudoJs is a javascript meta framework. JudoJs uses the Sprockets engine (http://getsprockets.org/) to allow you to create modular javascript applications.

Laze is a simple static website generator, inspired by the likes of jekyll, bonsai, nanoc, webby and many others. It's main purpose is to convert a bunch of text files into a working website.

Minify CSS and JS without requiring Java nor specifying individual files