A duckduckgo search produced this:
de Mike W9MDB
From: "wd4kpd wd4kpd@... [WSJTX]"
Sent: Friday, October 14, 2016 4:21 AM
Subject: [WSJTX] jtdx V16.5 RC3
just stumbled upon this software today, and really like to give it a try.
seems you need to join facebook to get into the group, anyone got some
info on this software or maybe an english link.