[TMSZ]

I hope this would be JSONedit as it is mine ;) - http://tomeko.net/software/JSONedit/ There are also - I think two different - plugins for Notepad++, JsonViewer: https://jsonviewer.codeplex.com/, commercial: XMLSpy and JSONBuddy and one or two half-baked projects on codeproject.

[tracker1]

That may well have been it, thanks. Will need to get WINE setup, so I can give it a try.

Tweeted it... It's funny, but I often use twitter to tweet about stuff, just so that I can find them later.