Flex is one option. While DOJO with xml/json/ajax , DHTML. Dojo has grown very well in market incorporating almost all widgets that meets the demands for critical verticles (HealthCare/StockMarket/NMS-EMS... and lot more).
Very easy to learn and use. Forum is available for help.
Thanks & Regards
Sidharth Pallai
No. No. No. No. Changed my mind. Wanna come down. To see this tiny ad: