XMPP is pronounced 'ʤæb.əʳ 🙂

To me,
#XMPP is the universal communication protocol, used for #IoT, #WebRTC, gaming, social, and #instantMessaging.
#Jabber is the latter in an open and federated network.
#CiscoJabber™ is a product by Cisco.
Zimpy is many things, but don't look it up in #UrbanDictionary!

(Btw. I fiercely advocate naming #freeSoftware projects, children, cats, companies, everything, after #UUIDs. No more unambiguousness, no more #trademark issues.)