Trying to move group chat from telegram to a more private option, but the key feature is its web interface which is so convenient...
I've checked SimpleX, Session, Briar & Element-Matrix, but the first 3 do not have a web version and the latest only has a free version for self-hosting and I haven't looked into self-hosting yet.
I'd completely understand if what I'm looking for doesn't exist for free, but if anyone has a suggestion here, I'm interested!
You can use its underlying ejabberd, Prosody, or other server for chat. Most modern clients offer OMEMO, OTR, PGP for client-side encryption (end-to-end implies the servers don’t/can’t do anything here)