5 Wolfram Alpha
Wolfram Alpha (wolframalpha.com) is a good choice if you're looking for an answer to a specific question rather than a broad list of search results. For example, you can use Wolfram Alpha to determine the answer to a particularly vexing algebra problem.
Ever wish you could search Google, Bing and Yahoo all at once? You can with Dogpile (dogpile.com). This site searches all three of the search giants. If you need to perform a comprehensive search, Dogpile might be the best choice for you.
Blekko (blekko.com) focuses on the human touch. Instead of getting a mass of responses as when you perform a Bing or Google search, with Blekko, you will get results handpicked by a staff. That's right: Humans are behind Blekko. That's why Blekko calls itself the spam-free search engine.
Like privacy? Then DuckDuckGo (duckduckgo.com) is a good choice. The search engine returns all the top results you'd expect from a Google or Bing search. But it also respects your privacy. DuckDuckGo doesn't track its users or their searches. Come here when you want to search away from prying tracking software.
GoodSearch (goodsearch.com) is a good alternative for Web surfers with a bent toward philanthropy. The search operates much like Yahoo, Bing or Google. But it also provides half of its revenues to schools and charity groups. And that's not all: GoodSearch also runs shopping engine GoodShops and restaurant site GoodDining. Both of these sites also donate revenue to charities.
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