OpenCyc is the open source version of the Cyc technology, the worlds largest and most complete general knowledge base and commonsense reasonging engine. Cycorp, the builders of Cyc, have set up an independent organization, OpenCyc.org, to disseminate and administer OpenCyc, and have committed to a pipeline through which all current and future Cyc technology will flow into ResearchCyc (available for R&D in academia and industry) and then OpenCyc.