Arch is an open source extension of Apache Nutch (a
popular, highly scalable general purpose search
engine) for intranet search. Not happy with your
corporate search engine? Not surprising, very few
people are. To the best of our knowledge, there are no
intranet engines that work as well as the Google's
global Web search does. There is a fundamental reason
for this: the algorithms used by Google on the global
Web (or similar) do not work nearly as well on
intranets for the lack of statistical data. Arch
(finally!) solves this problem. It uses a novel method
to deliver high precision search results that works
great. Don't believe it? Blind test evaluation tools
are included. You can deploy Arch and compare its
performance to your current search engine and/or
Google (on the public part of your site) using a blind
test methodology.

In addition to the excellent search quality, Arch has
many features critical for corporate environments:

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