JSONView - Firefox addon

Today i came across a firefox plug-in for viewing JSON Data.
After installing this plug in you can see JSON data formatted and highlighted in browser.
Can download JSON View from below link..
https://addons.mozilla.org/en-US/firefox/addon/jsonview/

Free REST service can try after installing JSON View.
http://api.worldbank.org/countries?format=json
 

ASP.NET Web API

ASP.NET Web API is a framework that makes it easy to build HTTP services that reach a broad range of clients, including browsers and mobile devices. ASP.NET Web API is an ideal platform for building RESTful applications on the .NET Framework.

• ASP.NET MVC includes ASP.NET Web API.
• Choose either the Web Platform for Visual Studio 2010 or for Visual Studio 11, depending on which version you are running.

for samples , please visit -  http://www.asp.net/web-api/samples
for more details - http://www.asp.net/web-api