JSON Viewer for Windows (hosted on Codeplex) is a great tool, I use it at least once a week. However it hasn’t been updated since 2011:

Here is the list of issues with version 1.2 of JSON Viewer.

1. When you open a large JSON file (more than 10 MB) the viewer freezes for 2-3 minutes, sometimes longer. You have to kill it with Task Manager.

2. When you edit JSON the cursor always jumps to the beginning of the file – very annoying. Making any changes to JSON is essentially impossible.

3. The URLs in JSON look like hyperlinks but clicking on them does nothing:

4. When you press Ctrl+V in the search field the text gets pasted to the JSON document instead, usually making it invalid!

Did I miss anything?