Shogun

A research-focused search engine founded by Human Genome Project scientists is claiming to go where even Google doesn't tread: the deep web.

DeepDyve is designed to search the 99 percent (they say, citing a study from UC Berkeley) of hits not picked up by other search engines, which return pages based largely on interpretations of popularity and work only if a page is findable. Content hidden behind paywalls or that is not linked to enough sites to gain page rank remains obscure, but often contains the source material required for serious research.

http://blog.wired.com/business/2008/...-engine-h.html