I don't know, but Everything uses the NTFS index and there isn't always one (e.g. REFS). To do its work, Everything needs admin rights and scrapes every file, w

I don't know, but Everything uses the NTFS index and there isn't always one (e.g. REFS). To do its work, Everything needs admin rights and scrapes every file, where Windows Explorer has to respect file and folder permissions to determine what you can and can't see. Windows' search will also try and show you files in offline files caches, OneDrive caches, etc. without showing the real path, Everything is happy to show you "copies" of things in the real paths even if they're not human readable. Windows' search integrates with Windows Server and is able to query a fileserver to use the server's index and show the results locally. Windows' search has plugins for filetype handlers such as Office and PDF to search file contents. Windows' search all to often seems to try and track most recently used things, Everything doesn't. Windows has hooks for displaying files which have been moved to archive storage in an enterprise (like it does for OneDrive cloud files) and showing them as if they were present, pulled from archive storage when accessed. The right people and incentives could surely make the search a lot better than it is now. 'Everything' is amazing.