OpenCyc is the open source version of the Cyc technology, the world's largest and most complete general knowledge base and commonsense reasoning engine. OpenCyc contains the full set of (non-proprietary) Cyc terms as well as millions of assertions about the. Cycorp offers this ontology at no cost and encourages you to make use of it as you see fit. more ... about What is OpenCyc?
Help for new Cyc users
People all over the world have been tracking the Cyc project since its inception. Many graduate students have done Cyc-based research and written dissertations on Cyc. Thus, you can find enthusiasts throughout academia. You'll find the most hard-core Cyclists, however, have downloaded OpenCyc and are working (instead of sleeping) to make their own Cyc-based applications. These people frequent the following address: