BASEMENT.ORG

At Arc90, we're always looking to build our dynamic web skills and Lord knows there are all sorts of spiffy frameworks out there - Prototype, Dojo come to mind. Then there's Jquery a really lean little framework that does all sorts of cool things. It's a got a nice plugin architecture so people can easily build capabilities on top of the framework. It's also really skinny (compressed to 12k).

Here's a nice example of how to light up something with Jquery. A simple nested list can turn into a nice collapsible menu system with Jquery and eight (yes eight) lines of code. Here's a nice little video to show it all happens. Pretty damn slick.