The German Government, and it is an offline and encrypted app. Not everything governments do is bad.
SoGo
Drip is a good option. Funded by Mozilla and German Govt
Unless the data you hold is so sensitive that it cannot be stored in the cloud, I think a cloud approach is the way to go. That way you get predictable costs and reliable uptime
The German Government, and it is an offline and encrypted app. Not everything governments do is bad.