The Malazan Book of the Fallen, by Steven Erikson.

Have you heard of Beeper?

I think Matrix has bridges to all these networks, except ActivityPub (it may, I just don't know).

https://github.com/spantaleev/matrix-docker-ansible-deploy makes it easy to deploy.

Not sure about the RAM limitation. If Synapse is too heavy, perhaps a different server (Dendrite?) will be light enough.

Nice deals! Thanks for sharing.

Does anyone knows of something like that based in Europe?

Matrix is in the process of being adopted as the MIMI standard by the IETF. At least it was one or two months ago.

'...and Krillin dies.'