  |
http://start.csail.mit.edu/ - http://start.csail.mit.edu/
Demonstration from the MIT InfoLab Group of its natural language question answering system, developed by Boris Katz. |
  |
BrainBoost - http://www.answers.com/bb/
Question answering engine that accepts natural language queries. |
  |
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. |
  |
AllQuests - http://www.allquests.com/
Scans and records questions and answers posted by the internet users on web forums or boards. |
  |
Ask why! - http://lands.let.ru.nl/%7esverbern/askwhy.htm
The system answers why-questions by searching for relevant paragraphs in Wikipedia. |