Through what remotely connect to machines with different OS?

Question

Computer networks

There are several machines in two cities, on Windows 10 and the latest Ubuntu. There was a need to manage all this remotely. So far, TeamViewer is coping with this, but it is somehow clumsy, the speed of work is not too fast.
Are there convenient alternatives?
Moreover, something "indestructible" is needed, because the machines are without physical access, there are no experienced users near them at all. You need to set it up once and always work without problems. Sounds like science fiction, but what if there is such a thing? (:
Only support for a shared clipboard, sound from a remote machine, etc. is really needed. It's just that you have to work with machines quite "tightly". But still, the most important thing is speed and stability, the rest is not so important.

Answer 1

Anydesk - just flies on win.
That week they released a beta for linux.
Already in development for OS X.

Answer 2

For Windows, the most feng shui is RDP. For ubuntu ... Do you have cho, Ubuntu with graphics is used? eight-[ ]

Answer 3

KVM? :)

Answer 4

VNC only if, really slow to the point of horror, but cross-platform.

Answer 5

KVM over IP is a good but expensive solution

Answer 6

RDP for microsoft, VNC for everything windowed, SSH for nix.

Answer 7

Google Remote Desktop