JavaScript.com
Many up-to-date JavaScript tutorials and scripts.
http://www.javascript.com/

Javascript Resource Site
A collection of resources for JavaScript including scripts, sample book chapters, downloads, links and book stores.
http://javascript.programmershelp.co.uk/

Ivan Peters Dot Com
JavaScript overview, adding "Find In Page" feature to web site. Also skydiving stuff.
http://www.ivanpeters.com/

JavaScript Mall
Scripts, tutorials, and links to other resources.
http://www.javascriptmall.com/

United Scripters
Javascript++, javascript algorithms, complex scripts. Essays on programming issues.
http://www.unitedscripters.com/

The JavaScript Weenie
Tutorials, examples and reference material.
http://www.webdevelopersjournal.com/JavaScriptWeenie.html

JavaScript ScriptSearch
Directory of books, forums, scripts and tutorials.
http://scriptsearch.internet.com/JavaScript/

programmershelp : Javascript Section
A JavaScript resource with links to tutorials , book reviews, downloads, scripts in a variety of different categories.
http://www.programmershelp.co.uk/javascript.php

Suite101 - JavaScript
JavaScript news, tutorials, discussions and links.
http://www.suite101.com/welcome.cfm/javascript

JavaScript Kit
Tutorials and over 400 free scripts. Also JavaScript objects, properties, and methods reference.
http://www.javascriptkit.com/

JavaScript Made Easy
Large collection of JavaScript source code. JavaScript tutorials with example code. Reference material for JavaScript.
http://www.jsmadeeasy.com/

GlobalShareware - JavaScript
JavaScript shareware tools and scripts catalog.
http://www.globalshareware.com/Web-Developer/JavaScript/JavaScript-1.htm

CodeHouse
JavaScript articles, scripts, online tools, book reviews, bookmarklets, and other resources for programmers and webmasters.
http://www.codehouse.com/

programmingsite - JavaScript section
A collection of resources for JavaScript.
http://www.programmingsite.co.uk/modules.php?op=modload&name=Web_Links&file=index&req=viewlink&cid=2

Javascript Resource Center
Javascript resources. Books, tutorials, references, tools and scripts.
http://www.perumal.qsurf.org/h6614/

Javascript Forum at Tek-Tips
Javascript technical support forums and mutual help system for computer professionals.
http://www.tek-tips.com/threadminder.cfm?pid=216

JSAN - JavaScript Archive Network
A repository of open source code to draw from for JavaScript, inspired by Perl's CPAN.
http://openjsan.org

Higher Order JavaScript
Notes by Sean Burke, inspired by "Higher order Perl", that highlight the parallels between JavaScript, Perl, and functional languages.
http://interglacial.com/hoj/

The JavaScript Discussion List
Dedicated to the general discussion of topics and issues related to JavaScript and JScript programming. Open to all: beginners and professionals.
http://mountaindragon.com/javascript/

Webring JavaScript
Discussion for users of JavaScript, VBscript, or ActiveX-script.
http://x.webring.com/hub?ring=javascriptring

CodeThat
JavaScripts, articles, resources, and tools.
http://www.codethat.com/

OpenJS
Provides source code, articles and tutorials about JavaScript and related topics like Ajax and client-side scripting.
http://www.openjs.com/

JavaScript Forum
A popular JavaScript forum.
http://www.webdeveloper.com/forum/forumdisplay.php?forumid=3

Tamarin Project
project to implement the ECMAScript 4th edition (ES4) language specification in the Gecko engine. Provides a description, a roadmap and the project's members list.
http://www.mozilla.org/projects/tamarin/