KR, Inc. - http://www.kr.org Charitable organization concerned with fostering research and communication on knowledge representation and reasoning. Features conferences, educational materials and mailing lists.
WebKB - http://meganesia.int.gu.edu.au/~phmartin/WebKB/ A set of tools using Conceptual Graphs formalism for building and documentation of knowledge bases, indexing or connecting elements of WWW-accessible documents.
Knowledge Interchange Format (KIF) - http://logic.stanford.edu/kif/kif.html A DARPA project. KIF is a language designed for use in the interchange of knowledge among disparate computer systems.
Tockit Project - http://tockit.sourceforge.net/ Aims to create a framework for conceptual knowledge processing in terms of social structures and a common code base. Features software description and contact details.
Conceptual Graphs Home Page - http://www.cs.uah.edu/~delugach/CG/ Features introductory material and bibliography, standard notation, events, projects, tools and researchers.
Knowledge Representation Resources - http://www.cs.cofc.edu/~manaris/ai-education-repository/ A list of knowledge representation resources, part of the AI Education Repository at the University of Southwestern Louisiana.
John Sowa on Knowledge Representation - http://www.jfsowa.com/index.htm Provides background material and tutorials on ontology and related topics in logic, conceptual graphs, and natural language semantics.
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