I recently started to play with JSON. One of the immediate issues I found was reading the results that were returned from an API call. IE prompted me to save them to a file. Firefox dutifully displayed them in the browser, but completely unformatted. eyalp’s JSON Viewer on CodePlex has three viewers, one of which is a standalone executable that enables a results set to be pasted in, parsed and navigated graphically (think RegEdit). All in all, very nice and just what I wanted for now. The other two viewers in the package are a plug-in for Fiddler 2 and a visualizer for Visual Studio 2005.