Remote Desktop VNC server for a Windows 7 VNC viewer?

Hi,

I’m looking for a Remote Desktop Server/viewer which performs like “RealVNC” on a RaspberryPi 3B connected to a Win 7 PC ( I have one of those setups and it works great).

I also have an Odroid C2 for hardware, and of course Ubuntu Mate for an OS.
The other part of the problem is I want to control the “headless” C2 from a Windows 7 PC.

Thanks for any pointers.