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XMMP was and is very commonly used in finance for various trading systems. Pretty much any exchange or a large trading firm with a white label product has a chat function in the desktop client and they all almost always used XMMP because amongst other things you needed federation.

It’s not falling out of fashion a bit with many of the trading clients moving to web based interfaces but it have a sense it will still stick around for a long time.

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Any names you can name using federated xmpp? In my little corner of the trading world everybody seems to use either ICE Chat and/or Bloomberg. My guess would be ICE Chat is xmpp under the hood, but I don't think it's federated.

CME’s chat client for CME direct uses XMPP they also support connection to other XMPP servers it’s usually mostly server to server or inter domain federation tho (can’t login with just any set of credentials but you can talk to other firms), CME is or at least was interconnected with other financial messenger services like Eikon/Reuters Messenger which is also based on XMPP.

And there are federated networks like the one from Markit

https://www.businesswire.com/news/home/20131007005587/en/Glo...

I don’t think there is a single major financial messenger today that isn’t based on XMPP.

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