For AJaX ...
Hey, there is a lot of framework (scriptaculous is not a AJaX framework, because it depends of Prototype ...), but the most knowed is:
- Dojo
- YUI - Yahoo User Interface
- Ext JS
- Adobe Spry
- Microsoft AJaX
- AJaX Sack (in dHTML Suite, by exemple)
Hum ... I think I will forgot a lot of libraries, so you can see better here:
JavaScript Libraries
The only-AJaX library (most of the JavaScript libraries that have good utilities (CSS 3 selector) have AJaX, this list is AJaX-Based library):
- SACK(as dHTML Suite)
- Plex
- Taconite
- xAJAX
- Sajax
- jx
- libXmlRequest
- Spry (Adobe)