- AjaxTerm, a terminal shim.
- Spry, an Ajax framework developed at Adobe with a few interesting demos, such as a photo gallery.
- AJAX without XMLHttpRequest, frame, iframe, Java or Flash – primitive, but interesting.
- Lickr, a Greasemonkey script that replaces the Flickr interface with a DHTML one.
- Gregarius, a PHP-based RSS aggregator.
- Kottke’s tweaks
- An Ajax mapping application
- Google Web Toolkit – not that hot
- Yahoo UI Library – second iteration
- Backbase – commercial, Community Edition is free for non-commercial use.