[palata]

I see your point, but Signal is out there and it does pretty much exactly what WhatsApp does.

It's just that people are too lazy to switch, because they don't care about their client being open source.

[sdfghswe]

I support your point on open source. At the same time, it has to be said that Signal doesn't to "pretty much exactly" what WhatsApp does. On my Android it's quite sluggish, whereas WhatsApp is very smooth.

[palata]

Works very well on my Android, on a not-very-powerful phone...