"Today's Wolfram|Alpha is the first step in an ambitious, long-term project to make all systematic knowledge immediately computable by anyone. You enter your question or calculation, and Wolfram|Alpha uses its built-in algorithms and growi...
Quintura is a visual search engine. It extracts keywords from search results and builds a word cloud. By clicking words in the cloud, you refine your query.
Clusty queries several top search engines, combines the results, and generates an ordered list grouped in clusters to help you find results you may have otherwise missed. Clusty was created by enterprise search software company Vivísimo.
ChaCha is a fusion of computer technology and human intelligence. Get human-powered answers to any question: anytime, anywhere, all for free whether it's on the website or through your mobile phone by texting your question to 242-242.
Mahalo is a human-powered search engine and a knowledge sharing service, helping people on the Internet quickly find the best possible information on any topic. Members of the public can also earn money by contributing to Mahalo topic pages...