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Hosted versions of jQuery, Prototype, Scriptaculous, MooTools, and Dojo javascript libraries. Let Google handle the caching and bandwidth issues for ...
I’ve always enjoyed this effect on Cabel’s site, and now you too can use it! Very cool.
Looks like an interesting alternative to Tumblr if you’re looking for a host yourself option.
A history hack for ajax
A good reference guide to the prototype javascript framework.
Super light weight javascript library
Webmail client that actually looks nice to use
Flash doesn’t seem to be as big of a deterrent as it used to be.
The cool effects library that sits on top of Prototype
Tim O’Reilly essay on Web 2.0
Multi-protocol (AIM, ICQ, MSN, Yahoo) instant messenger in a web app.