jQuery
    
    path: http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js
    path(u): http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.js
   

jQuery UI
   
    path: http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.min.js
    path(u): http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.js
   
Prototype
   
    path: http://ajax.googleapis.com/ajax/libs/prototype/1.6.1.0/prototype.js
   
script.aculo.us
  
    path: http://ajax.googleapis.com/ajax/libs/scriptaculous/1.8.3/scriptaculous.js
   

MooTools
   
    path: http://ajax.googleapis.com/ajax/libs/mootools/1.2.4/mootools-yui-compressed.js
    path(u): http://ajax.googleapis.com/ajax/libs/mootools/1.2.4/mootools.js
    

Dojo
   
    path: http://ajax.googleapis.com/ajax/libs/dojo/1.3.2/dojo/dojo.xd.js
    path(u): http://ajax.googleapis.com/ajax/libs/dojo/1.3.2/dojo/dojo.xd.js.uncompressed.js
  

SWFObject
   
    path: http://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js
    path(u): http://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject_src.js
    

Yahoo! User Interface Library (YUI)
   
    path: http://ajax.googleapis.com/ajax/libs/yui/2.8.0r4/build/yuiloader/yuiloader-min.js
    path(u): http://ajax.googleapis.com/ajax/libs/yui/2.8.0r4/build/yuiloader/yuiloader.js
    

Ext CoreNew!
   
    path: http://ajax.googleapis.com/ajax/libs/ext-core/3.0.0/ext-core.js
    path(u): http://ajax.googleapis.com/ajax/libs/ext-core/3.0.0/ext-core-debug.js
   

Chrome FrameNew!
   
    path: http://ajax.googleapis.com/ajax/libs/chrome-frame/1.0.0/CFInstall.min.js
    path(u): http://ajax.googleapis.com/ajax/libs/chrome-frame/1.0.0/CFInstall.js

http://code.google.com/apis/ajaxlibs/documentation/index.html#AjaxLibraries

Google AJAX Libraries API

CSS