What's the catch with #XMPP? It is more mature than Matrix and, as far as I know, less resource-hungry, so why is Matrix so recommended? I'm guessing it has more features, but I'm not sure.
@ob another problem with XMPP is that there is a lot of choice, and it can confuse people about what software to use. That's something we're trying to improve (projects such as https://joinxmpp.org/ and @snikket_im).
Matrix meanwhile is newer, based on web technologies, and has flagship clients (Element) developed by the organization that funds most Matrix development. Having a solid set of clients being developed in parallel with the protocol is a powerful strategy.
I prefer XMPP's simplicity, though.
@mattj Thanks! I had heard of XMPP a bit but mostly Matrix, and now, with WA's news, XMPP has come up more and I didn't see why it wasn't more popular.
The one thing I can see against XMPP is that Conversation doesn't look as nice as Element (in my opinion), but I would be surprised if that was the reason it was less popular between tech-oriented communities (at least the ones I've seen).
However, this past week I've heard more about XMPP than Matrix, so I might be wrong :)
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