Ask why! - http://lands.let.ru.nl/%7esverbern/askwhy.htm The system answers why-questions by searching for relevant paragraphs in Wikipedia.
BrainBoost - http://www.answers.com/bb/ Question answering engine that accepts natural language queries.
START - http://start.csail.mit.edu/ Demonstration from the MIT InfoLab Group of its natural language question answering system, developed by Boris Katz.
Language Computer Corporation - http://www.languagecomputer.com/ Includes a demonstration of the company's search technology designed to provide direct answers to simple factual questions.
Answers Project - http://www.answersproject.com A search engine that stores questions and answers submitted by users. This allows for answers to questions to be found instantaneously without having to search a page for that answer.
Helpero - http://www.helpero.com/ Helps users solve computer related problems.
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