Hyphenator.js … automatically hyphenates texts on websites if either the webdeveloper has included the script on the website or you use it as a bookmarklet on any site.
swiss-army knife of embeddable bookmarks. It can slice and dice elements on a page and present you with a freshly cut CSS selection for exactly the elements you wanted. If you’ve ever wasted time trying to pick out elements and digging around using Hpricot, jQuery, or Firebug (or worse), stop that and get this in your toolbar now.
This jQuery plugin provides a means for a developer to visually connect elements on their web page, in much the same way you might have seen on Yahoo Pipes. It uses Canvas in modern browsers, and Google's ExplorerCanvas script for stone-age browsers. Full transparent support for jQuery dragging is included, and the API is super simple.
A JavaScript library for image- and vector-tiled maps using SVG.
Sarissa is a cross-browser ECMAScript library for client side XML manipulation, including loading XML from URLs or strings, performing XSLT transformations, XPath queries and more.