I agree, but - at least to my understanding - that's not what OP was looking for...
The funny thing is, that the Bundeswehr actually has a communications platform based on Matrix: bwMessenger goes live for Bundeswehr, element.io
Why they're not using it? Who knows...
hnnng
joined 1 year ago
There's also the more recent Alta and Solitude from Libre. They seem to be supported in recent CoreElecs nightlies.
But yeah, information on those is also a bit thin.