Earlier today, PRAjax has released the UpdatePanel component. Some people already know Atlas. Atlas is an ASP.NET based Ajax framework, which introduced partial page rendering without much effort. PRAjax also supports this.
The principle is easy:
· Add the attribute prajax_updatepanelform="true" to forms you want to submit using PRAjax
· Add the attribute prajax_updatepanel="true" to DIV elements you want to update after form submission
PRAjax will then automatically hook itself into your page.... read more
We have just launched a suggest component, which is easy for creating text boxes like Google Suggest: you can add a suggest using PHP as backend with one simple attribute in HTML.