Harvest is designed to use third-party search engines -- Glimpse is the PD
one that they implemented at first. Verity's was the first commercial one
that they implemented.
The original poster was looking for a PD one; we obviously don't offer such
a thing, though we have no-cost versions that come with the Netscape
servers and for Microsoft's MIIS.
I'm about to go get married and disappear for two weeks.
Nick