See following web browser user agents accessed my web site at http://www.ajaxpro.info/, all are working with Ajax.NET Professional:
Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; i-mate JASJAR PPC; 640x480; PPC; 240x320)
Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; PPC; 240x320)
Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; PPC; MDA compact/2.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)
Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; Smartphone; 176x220)
Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; Sprint:PPC-6700; PPC; 240x320)
Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)
Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)
Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0)
Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 1.1.4322)
Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; .NET CLR 1.1.4322)
Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; PPC; 480x640) Opera 8.60 [en]
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
I did a lot of tests yesterday evening with my mobile phone with Windows Mobile 5. (T-Mobile will be happy because of my GPRS use!) And I installed the trial version of Opera for Pocket PC where all the examples like autocomplete.aspx or security.aspx are working. Opera will be my web browser for Pocket PCs!