1.- If you click one of the many links i shared so far you can see it has
support for desktop and mobile OS.
2.- They are intended for different purpose so I don't think one is better
than the other.
3.- I don't think it makes a difference for how long the code is being free
as long as it is free software.
There are a few good things about Wire, as I already said:
1.- People who is not tech savy can use it without my help.
2.- No need for cellphone number.
3.- End to end encryption by default.
4.- Syncs account between devices.
5.- Send voice messages, files, images, emojis, GIF's, and drawnings.
6.- Text, audio and videocalls.
7.- Nice and clean interface.
8.- People I know is actually willing to change to wire as opposed to other
things.
This is why I like it so much.
Not because I think is better. But because it had allowed me to use a free
and secure way to communicate with family and friends before they get
desperate and say "I don't understand this app" and uninstall.