XMPP seems to be quite popular with military organizations: https://www.isode.com/whitepapers/military-forms-using-xmpp.html https://www.isode.com/whitepapers/m

XMPP seems to be quite popular with military organizations: https://www.isode.com/whitepapers/military-forms-using-xmpp.html https://www.isode.com/whitepapers/military-forms-using-xmpp....