Never 10 is an easy to use utility which gives users control over whether their Windows 7 or 8.1 will upgrade itself to Windows 10.
The name “Never 10” is a bit of an overstatement, since this utility may also be used to easily re-enable Windows operating system automatic upgrading. But the primary reason for using this is to disable Windows' pestering insistence upon upgrading Windows 7 or 8.1 to Windows 10.
FREE
https://www.grc.com/never10.htm
Only released on Mar 30 2016 & already it has had a Total of 96,394 downloads. WOW ! It just shows how many people so far don't want to be nagged/forced to go to W10
Steve Gibson's Never10 vs. Josh Mayfield's GWX Control Panel
Steve Gibson's Never10 vs. Josh Mayfield's GWX Control Panel | InfoWorld