What “Skype analogues” (screen area broadcast, text, voice) with p2p and encryption do you know what you use?

Question

Information Security

Ideally, I am looking for the following criteria:
1. security (this is the first thing that does not suit Skype, and even more so Google services), preferably the RSA2048+ level
2. arising from the first - no clouds, integrations with social networks and other services, web services (webrtc) not necessary! Open-source, p2p and the ability to raise your signal server.
3. the ability to broadcast the screen (for this you need a program, although programs without such an opportunity, in themselves, are also interesting) and it would be nice with a choice of screen area.
4. Ease of installation/configuration for the receiving party as far as possible.
5. free (although if there are paid options for me, but free for the host - write)
6. unpopularity is even welcomed if the main features work.
For personal use, not commercial.

Answer 1

preferably AES2048+ level

What do you mean by AES2048?
In any case, pay attention to tox .

Answer 2

www.ammyy.com/ru
though I have a version of the program from 2012, now some kind of thread may have already been introduced there. But I have a freak.

Answer 3

Tox
https://ansy.us/skype-must-die-replacement-skajp-bez-poter/

Answer 4

1. Something similar, like, Cisco has. You have a type of installation server, from where the server of the application itself is launched. Something like this. I used it when I was a server. I suspect that, like everything Tsisochnoe, it is expensive.
2. Something like VNC? There are a bunch of options to make an MSI. The person will launch at home, the program itself will knock you its address and go ahead.
3. All sorts of REmotePC, PCAnywhere...

Answer 5

Signal
https://en.wikipedia.org/wiki/Signal_(software)