What should the sorting be for this list? I'm up for alphabetic, though should it arrange by author, or by project name?
Koala - Koala is a cross-platform gui application for coffeescript, less and sass compilation,Features: run every platform and compile error notification supports.
Brunch - HTML5 application assembler. One of top-CoffeeScript projects on GitHub. Supports a lot of scripting / style languages, templates etc and libnotify / OS X notifications.
tdreyno's Middleman — a lightweight framework built on Sinatra that serves lives Haml, Sass and CoffeeScript during development, then compiles, concatenates and minifies them for you when you're ready to deploy.
balupton's Buildr - The (Java|Coffee)Script and (CSS|Less) (Builder|Bundler|Packer|Minifier|Merger|Checker)
Coffee Script Project Template - Build system for CoffeeScript projects compiled with Google's Closure Compiler and tested with PhantomJS
ricardobeat's Flour - adds useful methods for use in Cakefile tasks -
watch. Can compile CoffeeScript, LESS, Stylus, minify js and CSS, lint, bundle and watch files and directories.
cake-async - adds support for asynchronous tasks in a Cakefile in a simple and unobtrusive way.
Haml: paulnicholson's coffee-haml-filter — a custom filter for rendering CoffeeScript inline within Haml templates.
Java: yeungda's JCoffeeScript — uses Rhino to compile CoffeeScript, allowing compilation within Java projects or on systems that Node.js doesn't support.
Java: Web Resource Optimizer for Java wro4j - uses Rhino for compilation of coffeeScript. Provides a runtime solution (using servlet filter), build time solution (maven plugin) and a CLI (command line interface tool). Latest version of wro4j detect the support of node and uses it as a faster alternative to rhino.
johtso's CoffeeMarklet — a simple tool that allows you to quickly generate bookmarklets from CoffeeScript.
.NET: jtmueller's CoffeeScript Monitor - a Windows system tray app that monitors one or more folders for new or changed CoffeeScript files, displaying any compiler errors in a system tray balloon tip.