X3D is the open-standard format for 3D graphics scenes on the Web.
C++ wrapper for GNOME libxml2/libxslt
CAM XML Editor for XML+JSON+Hibernate+SQL Open-XDX sponsored by Oracle
JUL - The JavaScript UI Language
A quick & dirty XUL / XBL prototyping editor for user interface.
Toolkit for rapid XML and web application development
Write-Once, Deploy-Everywhere software framework
An extensible development framework for roleplay games.
A lightweight GUI library
html5media is a DITA-OT plugin and authoring UI for media insertion