XULRunner
XULRunner 28.0 / 29.0b1 for Windows
Mozilla Developer Center
Bootstrap XUL XPCOM applications that are as rich as Firefox and Thunderbird
The XULRunner was designed to be a Mozilla runtime package that can be used to bootstrap XUL XPCOM applications that are as rich as Firefox and Thunderbird. It will provide mechanisms for installing, upgrading, and uninstalling these applications. XULRunner will also provide libxul, a solution which allows the embedding of Mozilla technologies in other projects and products.

Software Summary:

You can run XULRunner on Windows operating systems. XULRunner is a software product developed by Mozilla Developer Center and it is listed in the category. XULRunner is a free software product listed under The GNU General Public License (GNU GPL or GPL) license which means that it is fully functional for an unlimited time and that you have freedom to run, study, share (copy), and modify the software.

Alternatives in on Windows