Whatsapp uses XMPP for the reference. However they modified the protocol to be i... | Hacker News

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		shmerl on Feb 19, 2014 \| parent \| context \| favorite \| on: Facebook Buying WhatsApp for $16B in Cash and Stoc... Whatsapp uses XMPP for the reference. However they modified the protocol to be incompatible (on purpose) and it's not federated obviously.

johngalt on Feb 19, 2014 [–]

It's accurate to describe the XMPP standard as 'used' by many but 'supported' by few.

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