MVC UI extensions offered as open source Telerik, a vendor of controls for Microsoft .Net technologies, announced today that it is releasing a Community Technology Preview (CTP) of its new line of user interface (UI) extensions for ASP.Net MVC. The product is offered as open source under the Microsoft Public License (MS-PL), the same OSI-approved license used in the distribution of the ASP.Net MVC framework.[ Keep up with app dev issues and trends with InfoWorld’s Fatal Exception and Strategic Developer ]The UI extension framework integrates with client-side UI modules based on jQuery. In addition, the CTP includes a first look at extended UI components built on the jQueryUI widgets, including the Accordion, Slider, Tab, DatePicker, and Progress Bar. This is the first time that Telerik has offered a product as open source. In other news, Telerik has released RadControls for Silverlight 3. A Developer license is priced at $799 and with a Developer license with subscription and source code is $999. Software DevelopmentSmall and Medium Business