this post was submitted on 24 Apr 2026
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I have been using Matrix since I've been on Lemmy. It's an open source encrypted chat application, and obviously Lemmy DMs are not encrypted so it's kinda necessary for private communication. I have a few questions though.

Is there a community about Matrix on Lemmy?

Is Matrix technically part of the fediverse? I noticed it does not appear on fedidb.com. On a related note, what is the active userbase size?

Who is the developer/team and do they have an active presence on the fediverse?

Thank you for anyone who can answer my questions and also to the Matrix devs, I greatly appreciate you. But I am just curious about some of the details about Matrix which I already know about for Lemmy, Piefed, Mbin, etc. Matrix is an essential component of the fediverse ecosystem, so I think it would be prudent to have a greater understanding of it and potentially seek more cross-pollination and/or collaboration between the threadiverse and Matrix.

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[–] ptz@dubvee.org 17 points 2 days ago* (last edited 2 days ago) (2 children)

Is there a community about Matrix on Lemmy?

!matrix@programming.dev

Is Matrix technically part of the fediverse?

I would say no. It doesn't use ActivityPub and is its own thing. It's federated in that indepedent Matrix servers can talk to each other (like email or Nextcloud). So while email would be considered a federated service, it's not considered part of the fediverse. At most, it's like a 2nd cousin.

Who is the developer/team and do they have an active presence on the fediverse?

Matrix.org foundation (https://matrix.org/) and not sure. Maybe some of the individual contributors do, but I don't know any off the top of my head

[–] Shimitar@downonthestreet.eu 5 points 2 days ago

The foundation is just a placeholder, everything is governed by the commercial entity behind Element and Synapse. Not good IMHO, but this is what matrix is.

[–] Kierunkowy74@piefed.social 2 points 2 days ago* (last edited 2 days ago)

You can follow matrix.org via Mastodon/Misskey/Mbin/etc.