Wikipedia tells me that iChat was XMPP-based, but was discontinued in 2012 and replaced with iMessage, which is based on Apple Push Notifications and not XMPP. Google has also discontinued Hangouts and who knows what…
Wikipedia tells me that iChat was XMPP-based, but was discontinued in 2012 and replaced with iMessage, which is based on Apple Push Notifications and not XMPP. Google has also discontinued Hangouts and who knows what…