Create widget like igoogle in asp.net 2.0

I have to create webapplication like igoogle.So how can i create widgets?

Please tell me from start.

Thanks

P开发者_开发百科ankaj Pareek

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Take a look at DropThings. It's well documented and should be a great place to start.

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It is not opensource but try looking at RadDock

Dock Demo

hth

update

Ext Portal

this is open... I think! Licence