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Decentralized Matrix messaging network says it now has 115M users
(www.bleepingcomputer.com)
This is a most excellent place for technology news and articles.
A lot of IRC communities migrated, and it's pretty much the go to option now if you want live communications for your project or org, but don't want something proprietary. It's a pretty good replacement for Teams or Slack.
Many communities went back to IRC, though, because Matrix still is a hot mess, and the most visible ones which didn't (Mozilla, KDE, ...) are not hosting their own Matrix instance but letting New Vector do that for them, which makes in practice a disproportionate amount of users and accounts be managed by a single organization. I do think it's better than discord, but barely so.