this post was submitted on 19 Aug 2023
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I'm selfhosting a Matrix server and have all my Chats from other apps also bridged to there. For just text chat I don't feel like Matrix is missing anything, the thing preventing me from getting my not so technically minded friends on it is the missing support for good group voice chat.
It XMPP better for group VC? Is the option available to bridge Messenger like Signal, Telegram, WhatsApp, Discord, iMessage to XMPP?
Same here, but with XMPP in place of Matrix. For historical context, XMPP was invented about 25 years ago on the premise that people were already tired of having their instant messaging scattered over multiple protocols (rather than Signal, Telegram, WhatsApp, Discord, iMessage now, it was Yahoo, MSN, AIM, ICQ, … then), so bridging is very much front and center in the XMPP world. Over time, people also realized that bridging sucks in general (you either dumb down your client to the lowest common denominator which sucks for yourself, or your client isolates itself from the source protocol enough that it sucks for everyone else).
To add insult to injury, most modern protocols also forbid, by their ToS, the use of alternative clients (which very much includes bridges), and to the best of my knowledge WhatsApp, Signal and Discord will eventually suspend your account on this basis.
Matrix is still trying to carve a niche for itself in this space, and is failing IMO (judging by the quality/security of the bridges they have come-up with, and the recent libera.chat fiasco). I'd say that the situation in this regard in XMPP is only marginally better due to the fact that XMPP had a decade headstart to fail and try over, and I would not recommend using bridges on either of them if that can be avoided.
I'd say "it depends". Fun fact, Matrix uses jitsi-meet under the hood (which is XMPP + a media transcoding/multicasting component that doubles as a relay), and jitsi-meet is my recommendation for this use-case: as long as the central server has good bandwidth, you can really scale up your VC to many attendees. On top of that, XMPP has support for peer-to-peer group VC, with the benefit that hosting is simpler, it doesn't require any central component/relay (but the bandwidth cost is incurred on all participants and you won't go beyond a handful of attendees that way).
And to add to @[email protected]'s info about setting up XMPP here is a ansible playbook that you could use to deploy matrix: https://github.com/spantaleev/matrix-docker-ansible-deploy
I would look at what you want to use it for and see if you can do that better with XMPP or Matrix. The factor that is keeping me on Matrix is that I have all diffrent chats with people on different platforms in one client that is cross platform. Here is the list of available bridges in Matrix to get other chats into it: https://matrix.org/ecosystem/bridges/
But keep in mind that is is against ToS for most apps, so there is a small risk of getting banned from other platforms. I can only tell you that I've been using it with WhatsApp, iMessage, Discord and Signal for half a year and am not banned anywhere. That is with running my own Matrix Server and bridges on a rented VPS.
For information about what XMPP can do you'll have to do research on your own as I don't know anything about it besides that google kinda "killed it".
yeah, as I wrote above, that's no different in XMPP (but probably much more secure and better maintained: till recently most of the bridging in matrix-world was leveraged by libpurple, which has an horrendous security track-record).
If you are getting into bridging in XMPP, I recommend giving slidge a try: https://sr.ht/~nicoco/slidge/
https://slidge.im/core/user/low_profile.html#keeping-a-low-profile
And yet it has hundred folds more users than Matrix :) XMPP is ubiquitous (it props up google cloud/nintendo switch push notifications, if your online game has a chat system with million users that's it, WhatsApp is using it, you have billions of IoT devices running it, …) so just like Linux it can't really be "killed" at this point as a critical piece of software infrastructure. On the user-facing side, things are alive and kicking with great and well-maintained clients (which is more than can be said about matrix, being a single-source implementation held together by a single company constantly fighting financing issues).