TakeIo.Essentials (nuget): TakeIo.Essentials is a RESTful framework for ASP.NET MVC 3. TakeIo.Essentials supports Sinatra-like (from Ruby) routes, implements OPTIONS and HEAD methods in a reasonable way, adds syntax-sugar methods for returning OpenSocial (JSON/XML) single items and collections, decouples routing from controllers (you can specify them in Web.config), implements user-friendly exception handlers, and some other goodies.
Keywords: json|xml|rest|restful|aspnet|aspnetmvc|aspnetmvc3|mvc3