Evaluate your JavaScript functions live while editing.

UNOFFICIAL WebGL Specification and Conformance Suite

Feature detect HTML5 and CSS3 features, with handy css and javascript hooks so you can progressively enhance to your heart's content.

Constructive solid geometry on meshes using BSP trees in JavaScript

ECMAScript parsing infrastructure for multipurpose analysis

(Experimental) Tool to track code executed and other metrics (coverage, hotness, ...) - DEMO URL BELOW

A WebGL framework

Break free from CSS prefix hell!

evented I/O for v8 javascript

Helpers and example code for nimble restartless Firefox add-ons

What's new in <insert spec here>?

(Experimental) Tool to track code executed and other metrics (coverage, hotness, ...) - DEMO URL BELOW

Code coverage analysis for SpiderMonkey

Code coverage analysis for SpiderMonkey

git-bz with a few tweaks for bugzilla.mozilla.org, and other fixes not upstreamed.

Search by screenshot for firefox

1:1 git mirror of Mozilla's main mercurial repositories as lightweight branches. See hg-tip branch for tips. Updated every ~30min.

StyleEditor for Firefox - /!\ NOW INTEGRATED WITHIN FIREFOX 11+

Allows user to choose among different user profiles for Mozilla Firefox

e4 project repository (orion.client)

CSS-like selectors for JSON

Tools for tracing OpenGL, Direct3D, and other graphics APIs

CIL to Javascript Compiler

An experiment to port the basic firefox stylesheet inspector to the Jetpack API

Base library used by Ace/Skywriter/Cockpit/Cloud9

Command-line component for Ace/Skywriter

Go to

Tempo is a tiny JSON rendering engine that enables you to craft data templates in pure HTML.

ECMAScript 5 compatibility shims for legacy JavaScript engines

Threadsafe Spidermonkey Static Library for iOS