These are more-or-less protocols (well, maybe Signal is not). So instead this article could be named: Signal, Element, Dino
I've used Signal for the past number of years as a chat / videocall app, having switched from Telegram after it went full Nazi. But there are other options, some I've tried. Below are some notes on these various options for personal (perhaps professional) use.
There should be some kind of bridge that can talk, say, from XMPP to Matrix, and to other kinds of chat. The main thing is to find a home, that isn't just a compromise, or supports venture capital dudes.
Signal
- Free, run on donations
- I donate $12/year
- Not really open source as they tend to do a dump every so many months instead of showing activity on the source
- Closed as a platform, cannot run own client or own server. No web client.
- Perhaps blackmailed by Amazon to make enough changes, switched to Google servers, but how good is that?
- Looking for an alternative
Matrix / Element
- Tried it out for several months
- Too much effort keeping keys and access working
- Not friendly to multiple apps for the same account
- Server requirements are very high, some say not even scalable or practicable in certain situations, especially with open source Synapse
XMPP / Conversations.im / Dino
- PubSub and ActivityPub gateway
- Open source clients and server, run own server
- Conversations.im is an interesting implementation, with a decent Android app
- Linux app Dino works fine
- ejabberd is one of several servers one can run
- Movim has an overlay blog / social network that can be used with any xmpp account
- This looks like the goodest option fo what is available (vs. Signal / Matrix)
Jitsi (video conferencing)
- Open source and own instance
- Unclear of security model
- Web, Android apps
- Kinda replaces Zoom, instead of a chat app
Notes
I'll likely rewrite this article if and when I cutover from Signal.