this post was submitted on 24 Apr 2026
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not compatible with what? ActivityPub? that's no different from XMPP
and which part of the matrix ecosystem is not open?
Yes Matrix is not compatible with AP. Just a fact, not a judgment.
Well, matrix is supposedly open but it's driven by the company behind it and there is no real way to further advance the standards without the company agreement. The foundation is more a facade than e steering committee, not even the source code is managed by the foundation.
But again, I use matrix myself so I am not shitting matrix, just pointing out some stuff about it.
of course, I don't debate that. but you brought that up as a conclusion of matrix not being open. and it does not make sense. matrix not being compatible with AP is not because "matrix is closed" (whatever that means), but because the own protocol of matrix works vastly differently. its an entirely different thing. both are competing protocols for communication services. surely bridges could be developed, but these just cannot be "compatible"
Where did I ever wrote that matrix is not open? I think you misunderstood me
that's the part I understood that way:
It is a commercial entity, and they will never evolve the matrix standards to include an Activity Pub interface. Sadly, since they are the ones approving the additions do matrix standards, they also have the power not toke that to be.
So, yes, while matrix is open, is not really open in the sense that anyone can add pieces to the underlying.