3. Dapper:

Dapper is web based product for data mashup creation and use. It declares that user can use any web based content in any way. For example, creating RSS feed or Google Gadget for a site, receiving email to message Alexa ranking, putting a site's content on a map and many more. Any programmer can use Dapped content in its raw XML form. It can provide relevant data from anywhere into many formats of your choice( XML, RSS, Google Gadget, Netvibes Module, iCalendar, and more).

Read more at: http://www.dapper.net/