Start Date: July 2009
End Date: 2011
Wikipedia Entry
Yebol was a vertical "decision" search engine that had developed a knowledge-based, semantic search platform. Based in San Jose, California, Yebol's artificial intelligence human intelligence-infused algorithms automatically cluster and categorize search results, web sites, pages and contents that it presents in a visually indexed format that is more aligned with initial human intent.
Start Date: 12/07/2009
Wikipedia Entry
Ecosia is a search engine based in Berlin, Germany that donates 100% of its revenue to nonprofit organizations focusing on reforestation. Ecosia considers itself a social business, claiming to be CO2-negative, and supports full financial transparency and protect the privacy of its users.
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Descriptions take from Wikipedia.com