I've put together a site for Luxor XUL Plugins called Petra.

For now Petra lists three plugin packages, that is,

• the Luxor Plugin Get Started Example Suite
• the Luxor Batik SVG Plugin (2D Graphics in XML)
• and Denis Cardon's Swing JTable Plugin

If you have any Luxor plugins lying around, let me know so I can add them.

Full story @ http://petra.sourceforge.net

PS: To get started creating your own Luxor XUL tags/plugins check out the Getting Started Guide from the Luxor Plugin Example Suite.