http://www.asp.net/web-api
https://github.com/faniereynders/WebApiProxy/wiki/WebApi-C%2...
Nancy http://nancyfx.org/
service stack https://servicestack.net/
Asp.net web api http://www.asp.net/web-api
https://msdn.microsoft.com/en-us/library/jj823172%28v=vs.110...
My personal opinion is if you want to use an MS technology, use Web API unless you have a compelling reason to use WCF.
http://www.asp.net/web-api