Your users all can run the FireFox browser on MS-Windows and you want very fast XForms loading.
The Mozilla Firefox Plugin
This plugin was developed over several years with the support of IBM and Novell. It is now obsolete and is no longer supported.
The official version is available from addons.mozilla.org.
Nightly and other (testing) builds are available at Philipp Wagner's Web Site
- Mozilla FireFox XForms page Note that this web page was last updated in April 14th, 2014.