It is very fast on its feet, I must say.
Appears to be a component of an old version of PowerDesk (1998!), but worked for me in Vista and XP.
I compared results to my current search tools, Cathy and FileSeeker, and got same number of hits. Cathy is fastest because it works from a database list, but not a whole lot faster than Find.
Windows Search got more hits, because it looks inside compressed/zip files.
Nice one --- I'll keep using this one for a while and see if it ends up as a permanent member of the family.