JS-Examples provides 100s of free ready to use javascripts - explained - code shown - code demonstarted. It also offers Forums for Q and A as well as a tutorial section.

JavaScript Planet! is a big JavaScript site offering a collection of over 370 free scripts.

Java-scripts.net provides a collection of categorized, nice and useful JavaScripts for your site.

Award winning code library featuring free, original DHTML/JavaScripts for your site. Includes many different categories, such as images, mouse trail effects, menus, clocks, and more.

JavaScript Kit provides comprehensive JavaScript tutorials and over 400+ free scripts. Also includes a large developers' forum

The JavaScript Source is a "cut & paste" JavaScript library with a variety of free JavaScripts for your web pages. Categories include Buttons, Clocks, Calendars, Games, Navigation, Forms, and spiffy Background Effects. Each script comes complete with a demo and source code nicely formatted into a form text block for easy cutting and pasting or the option to have The JavaScript Source email

This site offers a large and growing collection of free javascripts, tutorials, articles, news and a great newsletter.

Speed JavaScript Resources provides a variety of fast, easy, and reliable ways to obtain yourself a JavaScript. The JavaScripts here are mostly written by its site developers, nicely organized and well commented.

This site offers a small collection of useful JavaScripts for your site. It offers backgrond effect, cookies, form validation, Web search, status bar text display, and more.

This site is for the absolute beginner to Javascript. It consists of The Tips page which contain some very simple but useful Javascript samples along with explanations, the Examples page which includes over 10 JavaScript examples, the Links page which contains Javascript related resources on the web, Javascript BookStore, and the Javascript Discussion Forum.