Here are some links to get into PrintTalk — What is PrintTalk?
Here's a short explanation:

“PrintTalk is an open XML standard to communicate business information used in the Graphic Arts industry. It is maintained by the CIP4 consortium.”
(PrintTalk specification version 1.3 [PDF])

Here’s a preview version of a web based JDF browser. The tree view in XHTML is created with XSLT out of JDF files. Formatting is done by a CSS file and icons from the CIP4 JDF Editor.
Currently there are only some sample files available – just for preview.

» JDF-Browser Preview

Feature list to version 1.0:

• AJAX based GUI
• User upload
• Collapse/expand nodes
• XHTML 1.0 Strict output