<p align="left"><font face="Arial Narrow" size="3">OpenCyc is the open source version of the
</font><a href="http://www.cyc.com/cyc/technology/whatiscyc">
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Cyc
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technology, the world's largest and most complete general knowledge base and commonsense
reasoning engine. OpenCyc can be used as the basis of a wide variety of intelligent
applications such as:
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<ul>
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<li>rapid development of an ontology in a vertical area</li>
<li>email prioritizing, routing, summarization, and annotating</li>
<li>expert systems</li>
<li>games</li></font></ul>
