The difficulty of any non-mainstream chat app is getting other people to use it. On that list, Signal is the most probable to be recognized by people who don't have a particular interest in privacy, so it's more likely to get more people to use it.
this post was submitted on 15 Apr 2024
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Privacy
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besides that, and besides the lack of forward secrecy on matrix and session already mentioned by privacy guides, do some of these alternatives have worse security, privacy, or ux than signal in some way?
Matrix also does have a pretty big problem with meta data. By default it stores a ton of meta data (at least the reference server implementation does) and I am not sure if this is even a solvable problem without redesigning the protocol. When opting for an alternative to Signal, XMPP is probably the better choice.
and how are they ordered in popularity?
That's a good question. I wonder if there are available user numbers for them.
I imagine it's regional and depends on what communities you are in. SimpleX chat seems pretty popular these days in privacy circles but I could see something like Briar being useful if traditional networks weren't reliably available for example.
Why is Session always mentioned ? It's an Australian company, in a land with zero constitutional oversight I'd be more inclined to think its a honeypot then a privavy focused chat app. Anom springs to mind as an example.
You should not trust any company or organization. What matters is the security and privacy or the app and service.
What's your use case? Likeminded techie friends? Family members?
Signal works well as an alternative to the likes of Telegram and WhatsApp, even if it still requires a phone number and is centralised. Far easier to explain to the family instead of "oh well you can sign up on this website or this website or that website".
Granted, if you want to host a small Matrix server just for the family, then go for it.
It doesn't require a phone number anymore.
Edit: I was wrong. :p
As far as I know Signal still requires a phone number to register an account. Since a while you can use usernames to connect with others instead of exchanging phone numbers.
The username release is quite recent for those not participating in beta versions of Signal.
Ohh, I wasn't aware that it was still necessary for registering.
I've had good fortune converting some family and friends to use XMPP.
People always mention fragmentation, and while there is some truth to it, it can be massively minimised by choosing blessed clients and servers for them to use.
In my case, I run my own server, and thoroughly test the clients (especially the onboarding flow) that I expect them to use, so that any question they have, I can help them out with quickly. Since we're all on identically configured servers, it minimises one whole class of incompatibilities.
There is still unfortunately a bit of a usability gap compared to Signal - particularly on the iOS clients. But they have come a long way and are consistently improving.
You can host Simplex server and clients
The major one that concerns me is who is behind them. Even if we trust that their encryption is not backdoored, there is a lot of information that can be gathered just from the frequency of messages and who they are between.
If it came out that a three letter agency was running one of these networks, it would not suprise me at all.
I'm using Matrix/element. I rather not give my phone number, you see, which is must-have for Signal. I have installed the app in my family's phones, and they were accepting, so all is well. I don't need to communicate through private messaging with anybody else, so who cares if others don't use matrix?
Yeah, about that. https://www.signal.org/blog/phone-number-privacy-usernames/
That's my point. The phone number IS STILL required to create an account at Signal!
I see.
You can always run a self-hosted version of Signal or a fork of it, then you can do whatever you want with it, including not using phone numbers.
Let's not forget that for those looking for alternatives, a key feature of signal is/was its SMS integration.
I use silence, a fork of signal.
- upside: it can still send and receive SMS messages!
- downside: nobody else uses it, so it only does SMS as a result.
For those who don't remember, not only could signal be used for SMS, it used to be able to do encrypted sms convos.
Also it sadly hasn't been maintained for years
The need to wait for an SMS to register a new account and the potential for recaptcha loop (which I have experienced) is a serious downside to Signal. Something I never need worry about with xmpp, matrix or threema.