Métamoteurs

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Seeks Project | An Open Decentralized Platform for Collaborative Search, Filtering and content Curation

http://www.seeks-project.info/site/ Current release is HIPPY: P2P collaborative filter on top of metasearch engine.
Multi: bing, yahoo, google

Lingo3G

http://search.carrot-search.com/carrot2-webapp/search Lingo3G Document Clustering Engine Lingo3G clustering engine organizes your search results into topics. With an instant overview of what's available, you will quickly find what you're looking for.
https://www.ixquick.com/eng/aboutixquick/

About Ixquick.

What Makes Ixquick Special Ixquick Protects Your Privacy! Ixquick does NOT collect or share ANY personal information! Read more on our privacy position or go directly to Ixquick's Privacy Policy . Ixquick is the world's most powerful search engine employing the most advanced metasearch technology.