[ACS_Solver]

It functionally is a project from fifteen-twenty years ago. Development activity was somewhat slow but steady but it largely fizzled out around I think 2018? The project tried to get political and financial support of the Russian government but failed to secure it, Aleksey Bragin transitioned to working in the crypto space, and of course with every year the number of potential users dependent on Windows 2000/XP is decreasing.

I think by now ReactOS is best viewed as an enthusiast research / challenge project with no practical use, like GNU Hurd. Just as Hurd is interesting in terms of how kernels can be done, but isn't a viable candidate for practical use, ReactOS is now in the same category. Very interesting as an exercise in reimplementing NT from scratch using clean room techniques but no longer a system that has a shot at gaining any adoption.