I have developed an XML data Editor
It is designed as an XML Data Editor, I make no effort to edit html or any other standard xml file, only data for ecommerce and filing.
It is available for down load from here http://www.users.bigpond.net.au/tcroll/software/xmlnotetree/XMLNoteTreeHelp.htm
Specifications here http://www.users.bigpond.net.au/tcroll/software/xmlnotetree/xmlnotetree.htm
My home page here http://www.users.bigpond.net.au/tcroll/
(Windows only, no installation required, just unzip to a folder, then run XMLNoteTree.exe)
It would be nice if some people who use XML could give me some feedback (preferably constructive on how to improve it)