OpenCyc is the open source version of the Cyc(r) technology, the world's largest and most complete general knowledge base and commonsense reasoning engine. OpenCyc can be used as the basis for a wide variety of intelligent applications.
The OpenCyc Knowledge Base and its accompanying freely distributable binary
OpenCyc Knowledge Server are now available for Windows NT/2000/XP. Previously only available on Linux, version 0.7 for Linux and Windows also now includes an integrated hierarchical task network planner, improved inferencing capabilities, support for remote connections, and an early version of a Java-based ontology grapher. New documentation includes the first release of the Ontological Engineer's Handbook, new online tutorials for inference and efficient OE, and a one-hour beginner's walkthrough of the knowledge entry process.
Applications can be developed using the comprehensive Java API or using the new Python API (which also minimally supports access from Zope). A new Oracle-to-OpenCyc interface has also been provided.
Discuss OpenCyc on irc.openprojects.net / #opencyc.
Public browsing servers are:
Documentation, KB tours and tutorial materials at <http://www.opencyc.org/doc>