XML Copy Editor - XML Copy Editor is a fast, free, validating XML editor.
EditiX - EditiX is a quality Open Source XML Editor and XSLT Editor for Windows, Mac OS X and Linux. Test for Free with our 30-day Trial !
Firstobject XML Editor - Firstobject's free XML editor for Windows is called foxe.
<oXygen/> XML Editor - <oXygen/> XML Editor is a cross platform XML Editor providing tools for XML authoring, XML...
XML Marker - A fast and easy source-level XML and Json Editor, XML Marker uses a combination of syntax-highlighting editor, tree view, and table views to help you get a better insight to your XML code
Liquid Studio - XML Tools Provider: XML Studio - Graphical XML Schema Editor.