Not a terrible JSON editor :)

Most of the JSON editors out there are pretty terrible, but this one is decent and is currently the only one I use. All of the commonly used commands (create node, etc) use option+command keystrokes which are generally hard on the hands and difficult to remember. The saving feature of this editor is its split-pane plain-text editor, which allows you to write JSON directly, then just click "Beautify" and it formats it all. Additionally, the Beautify does not reorder your nodes (which some other JSON editors do)—big plus! Also, the node viewer is great for those string nodes that have a lot of text in them.

To be the perfect editor, I recommend these changes:
- the plain-text editor should have syntax highlighting and auto-indentation
- remap the keystrokes, or allow the user to remap them to make writing JSON documents less contortionistic.

Scott Wiersdorf about Power JSON Editor