Commercial validating XML editing system for Windows
Author: Topologi Homepage: http://www.topologi.com/products/tme/index.html# Family: XMLEditorFamily Platform: Windows License: Commercial with 30 day trial
"No other editor is aimed at making markup efficient!
The Markup Editor lets you plough through large amounts of text markup and handle documents over a million lines long.
The Markup Editor will save you time and guarantee the quality of your data!"
Screenshot: