Skype analogues in 2015. Are there the same in terms of functionality?

Question

Skype

It is important that it be cross-platform, available under Windows Phone, skillfully call with video + audio, transfer files and messages.
+ It would be nice to be able to encrypt messages and audio calls and not transmit them "a little higher".

Answer 1

I don’t know if there is a Windows Phone, but the choice is: Google Hangouts, Tox, Viber.
Whatsapp, as far as I remember, does not have video calls.

Answer 2

There are no analogues.

Answer 3

Brosix