OAT Framework OAT (OpenLink AJAX Toolkit) is a new open source reference Ajax library that's resulting from the combined efforts of members of the OpenAjax Alliance. I haven't tried it yet, but the site is chock-full of demo widgets that have gotten rave reviews on Ajaxian.com today. The source is downloadable at sourceforge, and I'm printing out the Alliance's white paper now... Very cool news indeed!