AprilF00lzDownsides of Signal alternatives compared to Signal?
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.
and how are they ordered in popularity?
CorrodedThat’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.