Free open source Widgets for ASP.NET?

is there any free open 开发者_如何学Pythonsource Widgets (iGoogle-like widgets) framework for ASP.NET that I can build my own widgets with and can be used for commercial use (sites developed with it can be sold).

I checked dropthings and Kalitte but they require a licence.

thanks

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BlogEngine.NET includes a widgets implementation supporting multiple zones but not drag&drop support. You might check it out.