this post was submitted on 10 Aug 2023
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~~You can't. Signal's server is closed source. Only the clients are open.~~
I just discovered Signal open source the server. Please kindly disregard what I said. I had the old news in my mind (maybe).
Signals server software is open source. I suspect you mean the main signal network is closed and centrally controlled (it's not federated basically) - anyone can run a private signal server (and network) but not as a node within the main signal network is my understanding.
Maybe they meant that at some point a few years ago Signal didn't update their public open source server code for neraly a year or so while simultaneously rolling out new features.
WTF? Signal Server code is open source 🤔🤨
I thought it was something like that. What I really want to see is an open-source version of Briar.
Go look at SimpleX Chat. Decentralized, no identificators, very privacy focused.
Briar is open source, but yeah, check out SimpleX Chat
I just checked and you're right! I looked into Briar a while ago and ignored it because I couldn't run the Briar-Mailbox program on Linux.
I don't think it runs on iOS yet either, which may limit who you can contact with it.
I have an off-grid Linux box that hosts a local Wi-Fi network and some communication and entertainment apps. I want to host a chat service for asynchronous off-grid comms. Briar looked like the perfect option if I could just add the mail-box to my Linux box.
Simplex looks like it might do something similar, but it doesn't look like it does comms over direct Bluetooth.
It doesn't. But you can run your own server pretty easily.
You could also check out Jami. It doesn't do direct Bluetooth but it works on a lan if you run your own dht... proxy? bootstrap server? It can also do local discovery over udp, but I haven't tried that yet. I think async may chew up battery though
Maybe your own matrix server?
To add to what others have said, Signal's server code is open source, but they took the anti-spam module closed source last year