One of the best known is called Direct Search , compiled by Gary Price of George Washington University. A directory, of course, is just a listing of sites. It's a good way to waste an afternoon, without having much to show for it. So the Intelliseek people have created a new site that allows users to search more than 1,000 information sources, as well as those on the invisible Web. It's in beta test, but you're welcome to try it.
Backers tout it as the Web's largest search site.
Type in a search request and the service will automatically search across multiple sources and categorize the results. It may offer suggestions for additional searches based on what it's learned. You can also search by category, or by source within a category. You can define searches that run every day, and ask it to alert you to changes in pages you specify. ProFusion works by formatting your search criteria to meet the specific requirements of each source.