For months now, I've been looking for a usable XML authoring application suitable for end users. The dozen of software I tested, always burdened the user with terminology such as DTD, XSD and other kinds of concepts that non-geeks should never be worried about.

Lots of editors have nice features like XPath queries resolvers, built-in XSL transformation or FO rendering engines but what's the point when you need to be an XML guru just to create or update a document?

The lack of freely available editors has really slowed down the adoption of XML in the business I work into. So please, let me know if you ever found any good authoring software which supports DTD or schema-based validation and a user-friendly editing environment.