ActiveRecord for JavaScript (ORM)

Google Chrome Experiments is an online showroom of web browser based experiments, interactive programs, and artistic projects.

JavaScript performance tips article

This is an open-source “spin-off” from the SIMILE project at MIT. Here we offer free, open-source web widgets, mostly for data visualizations. They are maintained and improved over time by a community of open-source developers.

The Zero Clipboard library provides an easy way to copy text to the clipboard using an invisible Adobe Flash movie, and a JavaScript interface. The "Zero" signifies that the library is invisible and the user interface is left entirely up to you.

This is a web interface to compress your JavaScript or CSS.

The JavaScript Code Quality Tool

For web application developers, the '''JavaScript Templates''' engine from TrimPath is a lightweight APL / GPL open-source component that lets you have template-based programming (like PHP/ASP/JSP) while running in a web browser

JavaScript Unit Testing for Firefox

Lucid is a free, open source web desktop, or webOS that lets you:

• Access your media, office documents, and other files anywhere
• Stay up to date with Twitter, RSS feeds, and what's happening on the web
• Create great web applications in ridiculously short amounts of time

Xinha is a powerful WYSIWYG HTML editor component that works in all current browsers. Its configurabilty and extensibility make it easy to build just the right editor for multiple purposes, from a restricted mini-editor for one database field to a full-fledged website editor.

Audio experiment

Using HTML5 and Flash, SoundManager 2 provides reliable cross-platform audio under a single JavaScript API.

MiniWeb models an entire web site in a single HTML page. All of the site files are stored in a JSON object which you can navigate with a UNIX-like shell or the system browser. It has a built-in templating system and has an approximate separation of client and server. It is in its infancy but is still kind of fun to play with.

cssQuery() is a powerful cross-browser JavaScript function that enables querying of a DOM document using CSS selectors. All CSS1 and CSS2 selectors are allowed plus quite a few CSS3 selectors.

WYSIWYG Content Editor, Inline Rich Text Application

A JavaScript Compressor.

The Javascript Sound Kit is a wrapper around the ActionScript Sound Object, it makes it possible to use the Sound Object in Javascript the same way you do it in ActionScript.

A JavaScript file you can insert into your pages to simulate the Firebug console in browsers that are not named Firefox.

SWFObject 2 offers two optimized Flash Player embed methods; a markup based approach and a method that relies on JavaScript & offers a JavaScript API that aims to provide a complete tool set for embedding SWF files and retrieving Flash Player related information