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CogSci 7790: Cognitive Modeling Fall 2003 Links CISpace – Set of computational intelligence tools. The Tower of Hanoi example which we used in a recent class can be found here, along with similar extended examples. These examples are longer and better documented than the tutorial code examples, so it's worth taking a look. This is the location of the general ACT-R Web site. Binaries of ACT-R 4.0 for various platforms can be found on this page. Be sure to download the standalone version, not the full version, and also download the models. Cyc's Public Ontology .  This system is more limited than the Ontolingua tool, but also much easier to browse and often more detailed. Stanford KSL's Ontolingua system .  Since you don't want to edit any of the pre-existing ontologies, you can log in anonymously.  I recommend looking at the HPKB upper ontologies, which build on the Cyc system . WordNet is available at many sites, including this one , written in Python. Conduct your own Turing Test.  If you're interested in trying out systems like ELIZA, you might try the AliceBot system.  Alice is freely available and can be programmed with different personalities.  A number of other systems are available at the BotSpot web site.   Additional readings on knowledge representation.  In " What is Knowledge Representation ," Davis, Shrobe and Szolovits discuss what the role of a knowledge representation is, and some of the current issues in the KR community.  " Problem Solving and Search " (a portion of a CogSci course taught by John Batali at UCSD) is a very good summary of how problem solving works, using the Tower of Hanoi as a problem domain.