A universal channel for receiving calls from Skype, Viber and other instant messengers?

Question

Skype

Tell me if there is a universal solution, preferably Open Source, for receiving customer requests from Viber Skype in a single window? API and so on?

Answer 1

there is no such thing, none of the messengers has an official API, except perhaps Skype, so each implementation is individual, if at all

Answer 2

Most suitable solution: Franz messenger
meetfranz.com
But for now only for Mac