5. Goodsearch
Goodsearch is so much more than just a standard search engine. According to the info on the site, they donate 50% of revenues to charities and schools that their users choose. Apart from that, the site is the central for other side projects like: Goodgames, Goodtvads, Goodsurveys, Goodoffers, Gooddining, Goodtravel, and Goodshop to-go. The main search engine is still powered by Yahoo.