Unofficial support for Linux/Unix
The Linux Documentation project ISP connect document (from 1998) has links
.. to John Phillips' last "slack help" documentation to connect Slackware Linux to Demon is dated May 1996
... and the documention to connect to the Demon news system has a history file from 1995-01-05
I felt it was a shame there was no official Demon support for Linux/Unix. However, it did offer the opportunity for others to help out!
Now very much "stuck in time" http://www.dreamtim.demon.co.uk/linux.html