gnome-mlview
MlView is an attempt to develop a tree oriented xml editor for gnome. It purpose is to become a full fledged xml editor though compact and fast. It is written in C and uses the gnome libraries (libxml, gtk, libgnome)
Microsoft XML NotePad
XML Notepad is a simple application that assists in the building of rapid prototypes of XML applications.
Peters XML Editor
A XML editor with syntax highlighting and customizable source view. Supports code-templates and auto complete. Ability to add, edit and delete Elements,Attributes,Text, CDATA sections,Comments, and Processing Instruction. This program does not yet fully Unicode.
SeleXML
Edit XML using point and click. Associate text with XML elements, generating standalone XML with a DTD.
Xeddy for JBuilder
Designed to be integrated with JBuilder and open for customizations. Features XML viewing and editing with DTD support, templates and allows direct editing of code.
XML Cooktop
Environment for authoring, editing, and testing XSLT style sheets, XML documents, DTDs, and XPATHs.
XML Notepad
Shows how a simple editor can be built based upon the MS XML parser in IE4 and IE5.
XMLEditPro
XMLEditPro is a free, simple, and intuitive XML editor. It has a rich set of features that makes working with XML files much easier than conventional editing using a text editor.
XMLTree
A visual parser for XML files which allows editing the document using a visual tree metaphor.