A WYSIWYG XML editor. The goal of this editor is to enable (web)developers to create an easy to use interface for authors to edit XML content. See the wiki for a more detailed description.
Vex is a CSS-styled XML editor based on the Eclipse platform. It provides a word processor-like interface for document-style XML documents such as DocBook and xhtml.
This is a validating xml editor for creating, edititing an manipulating XML files by a web interface. It is based on open standards like XHTML, JavaScript, DOM and CSS for the client and JavaServlets, JSP for the server.