Hi all,
    I've just thought that, this may be an _useful_ information for this list.

Xalan-J's xslt 3.0 dev build supports various XSLT 3.0 language
instructions and associated XPath 3 functions.

I've setup to try this at following link. Either free registration to
this link, or via google login, various kinds of XSLT 3.0
transformations may be tried on this,

https://www.softwaredataexperts.com/siteadmin/login.jsp [1]

This link [1], supports both Saxon EE 10.3's xslt 3.0 implementation,
and Xalan-J's xslt 3.0 dev build.

Hope that, these details are useful to members of this list.


-- 
Regards,
Mukul Gandhi