There are others of course. You can go Telegram or Signal as a great cross platform chat. Not geared directly towards business, but still a great alternative.
Chat apps are the posterchild of what happens when open standards (irc, jabber, xmpp,...) get replaced with walled gardens.
On my phone I run: Telegram, Messenger, Viber, whatsapp, hangouts, signal, slack and SMS.
I should have installed skype as well, but its the worst chat app ever that kills your battery instantly. There are others as well but enough is enough.
How did we get here? I regularly need to think where should I message someone or where is a specific chat group....
Imagine you had to do this for every email service provider.
Chat apps are the posterchild of what happens when open standards (irc, jabber, xmpp,...) get replaced with walled gardens.
On my phone I run: Telegram, Messenger, Viber, whatsapp, hangouts, signal, slack and SMS.
I should have installed skype as well, but its the worst chat app ever that kills your battery instantly. There are others as well but enough is enough.
How did we get here? I regularly need to think where should I message someone or where is a specific chat group....
Imagine you had to do this for every email service provider.