If Microsoft goes through with its threat to foist the atrocious ribbon on the flawed but useful and usable Explorer, I have insurance.
You can install Far Manager, a text-mode Win32/Win64 clone of the classic Norton Commander. It’s fast, it’s functional, it’s easy to use, and it looks just like you remember the old DOS classic that you haven’t used since the day you upgraded from DOS to something else, whether that was OS/2 or Windows 95. But it supports long filenames and it’s a true 32- or 64-bit application.
If you prefer a GUI application, there’s Free Commander, which resembles the Windows GUI version of Norton Commander.

