I built a backport of the latest version of Jami for various architectures including ppc64le. This is one of several ways to do chat and VoIP with no central server,
more details on the official web siteThese are distributed through the
Debify repositoryIf you didn't use Debify already, you can add the repository with this command:
$ wget -O - http://apt.debify.org/add-apt-debify | bash
and then you can get the latest Jami with:
sudo apt update
sudo apt install -t debify-buster-backports jami
and then launch it with this command:
$ jami-gnone