Web Directory by Internet-Web-Directory.com

Nutch based engine explains search result relevancy.

An uncluttered interface offers options to search the web, news and blogs, includes cached pages and 'anchors', which are titles and descriptions from the Open Directory.

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Search engine with sponsored links at the top of results. Also offering a meta tag builder and analyzer.

Indexes the sites listed in the major Internet directories. Offers free web services, including a search toolbar, and code for webmasters to provide search boxes on their sites.

Using the same database as Ask Jeeves, it ranks sites partly by subject-specific popularity. Clusters results into subject groups, and lists related link collections by experts and enthusiasts where appropriate.

Index of 1.5 billion pages. Search results are clustered into categories. Preferences settings include search by language and a filter to remove adult content.

Search engine with country specific searching. Options to display country flags, and include preview and translation features. Sponsored links appear in panels separate from the main results.