Myghty is a Python based templating framework originally based on HTML::Mason, the enterprise-level framework used by Amazon.com, del.icio.us and Salon.com,
Sajax is an open source tool to make programming websites using the Ajax framework — also known as XMLHTTPRequest or remote scripting — as easy as possible. Sajax makes it easy to call PHP, Perl or Python functions from your webpages via JavaScript without performing a browser refresh. The toolkit does 99% of the work for you so you have no excuse to not use it.
jQuery is a fast, concise, JavaScript Library that simplifies how you traverse HTML documents, handle events, perform animations, and add Ajax interactions to your web pages.
Mash up images, graphics, maps, and text to create your own unique content to publish on your own website/ blog. Integrated Media: flickr images, Google Maps, Yahoo Maps, SecondLife Maps.
jMaki is an Ajax framework that provides a lightweight model for creating JavaScript centric Ajax-enabled web applications using Java, Ruby, PHP, and Phobos.