TAXI is a new generation of editors for your XML documents. With TAXI you don't work with the structure of your document but with a graphical representation of it. TAXI is written entirely in Java. Thus, it is cross-platform. What you need is TAXI itself, of course, and JRE version 1.3 or above.
TAXI provides the following main functionalities :
Of course, more than one document at a time can be open, and as a great flexibility, you are allowed to copy and paste from a document to another one.