I am searching for a selfhosted and secure (end to end encryption) chat platform for my family (5-20 users), possibly one i can host on a raspi.
Is matrix a good choice, or should i try something else?
XMPP is fantastic IMHO
If you want to support a great project and have great uptime check out conversations.im
I don’t recommend self hosting something you want available all the time. That being said everyone has different needs/uses 😊
Any Reason Signal doesn’t do it?
Selfhosted isn’t always the Best option
three main ones I’ve seen in this comment section are
• XMPP
• Matrix
• SimpleX
So all of these encrypt the conversations so not even the server admin can access them?
XMPP only does it with certain client extensions. And Matrix only does it when the rooms are set up this way. SimpleX does what you want, but is kind of unintuitive for the average user.
I say go with Signal, it does what you want and is idiot-proof.
It is literally one setting in Matrix to force all rooms to only do encrypted messages.
Signal is pretty unintuitive when it comes to multiple devices per user, device transfers after a device has been lost,etc.
Edible paper, lemon juice, and hair dryers.
E2E is complicated, if you self-host for a group, having TLS and encrypting data at rest (storage) may be enough. Get a threat model. That being said, I would recommend snikket.org which is a superset of extensions over XMPP which is the open source IM that was the base of almost every app out there. Matrix and Rocket are both alright too. Depends too on your resources, synapse requires too much RAM (or so I heard)
Yes, XMPP with proper TLS on the server side and Conversations or one of its forks (preferably fetched from F-Droid) using OMEMO encryption should be good enough. If you are brave or paranoid, give Tox a try: https://tox.chat/