JavaScript
http://www.javascriptkit.com/
Comprehensive JavaScript tutorials and over 400 free scripts. Just added a complete JavaScript Reference. Also features DHTML, CSS, and web design tutorials, and a large developer's help forum.
http://www.javascript.com/
JavaScript.com is your source for all things JavaScript, including tutorials, free java scripts, downloads, tools, javascript source code and other scripting resources.
http://openjsan.org/
JavaScript Archive Network is a comprehensive resource for Open Source JavaScript libraries and software.
http://www.jsmadeeasy.com/
Large Collection of JavaScript source code. Choose from thousands of free scripts. JavaScript tutorials with example code. Excellent reference material for JavaScript. If you need help with JavaScript. JavaScript Made Easy is the place to find it.
http://javascriptstation.com/
The Definitive Quick JavaScript Resource For JavaScript Developers & Web Developers.