I experimented with ReactOS a while back out of curiosity, mostly on a spare machine and in a VM. In my experience, it’s still very much a technical proof-of-concept rather than a practical Windows replacement.
Compatibility is the main limitation. Even though the goal is NT/XP-level compatibility, many modern applications, drivers, games, and editors either don’t install or behave unpredictably. Hardware support in particular feels far behind what you’d expect for daily use, and I wouldn’t rely on it for video editing, modern games, or anything ActiveX-dependent beyond very basic legacy software.
Where ReactOS is interesting is as a learning project and for testing very old Windows software without running an actual Windows install. Outside of that, Linux + Wine or a lightweight Windows install still seem far more usable in practice, even if they aren’t perfect.
For anyone comparing options or checking software compatibility across platforms, I’ve found it useful to look at neutral software directories that list system requirements and real-world usage notes, for example:
https://appgetters.comIt helps set expectations before spending time installing something experimental like ReactOS.
Overall, I respect the effort behind the project, but at its current pace I don’t see it becoming a true Windows alternative anytime soon.