Several computers at home currently run on Windows 7 or Windows 8.
How do I know if the software on those computers is compatible with Windows 10 ? When I say software, I mean:
- Drivers for the computer components
- Drivers or software for accessories (printers, for example)
- Drivers or software for miscellaneous devices (mobile phones, sat nav, etc.)
- Miscellaneous software applications
From what I have seen, Microsoft's Get Windows 10 upgrade tool has a Check your PC functionality. It checks that your computer is compatible, and also gives you warnings if some apps are known to be incompatible. If there is no warning about a given app, it should work fine (I am a bit concerned about the should part).