Dear Stefan,
tdeio-gopher is available through Gitea
(
https://mirror.git.trinitydesktop.org/gitea/TDE/tdeio-gopher) but it's probably not
packaged for Devuan/Debian. I built it from source from there.
Once installed, you can access any URL that begins with gopher:// through Konqueror (and
most other TDE applications I suppose), its contents will be displayed in a folders/files
structure like any ordinary folder.
--
Mavridis Philippe