MOTEL
- A Knowledge Representation System combining expressiveness of Natural Language Processing with Description Logic.
- http://domino.mpi-inf.mpg.de/internet/reports.nsf/c125634c000710d0c12560400034f45a/53a2ea0fdf19f6b3c1256040004b0a79!OpenDocument

Mind Graph
- Graphic techniques for problem solving in maths, computer programming, studying, note-taking, brainstorming and knowledge representation.
- http://www.mind-graph.net

SATEN
- A Sagacious Agent for Theory Extraction and RevisioN. SATEN is an intelligent object-oriented web-based information management system. It provides an information extraction engine and methods for iterated belief revision. It can also perform nonmonotonic
- http://magic.it.uts.edu.au/systems/saten.html

Context Broker Architecture
- CoBrA is an agent-based architecture for supporting context-aware systems in smart spaces like intelligent meeting rooms, smart homes or vehicles.
- http://cobra.umbc.edu/index.html

Project Halo
- A research effort towards the development of Digital Aristotle, an inference-based question answering system.
- http://www.projecthalo.com

OMCSNet
- A freely available semantic network of common-sense knowledge and a set of tools for making inferences using this knowledge. Features download, white papers and developer tools.
- http://web.media.mit.edu/~hugo/omcsnet/

DAA Solutions
- Software company providing KBE capabilities for companies with products requiring custom design as an integral part of their sales process.
- http://www.daasolutions.com

Classic Knowledge Representation System
- Features description of the software framework and implemented systems, as well as information on machine learning applied to description logics. Also offers a selected bibliography and details on obtaining the software.
- http://www.bell-labs.com/project/classic/

CLIPS
- Productive expert system development and delivery tool; a full environment for creating rule and/or object based expert systems.
- http://www.ghg.net/clips/CLIPS.html

XMaster
- Information on a Windows expert system shell. Includes product descriptions and pricing and contact information.
- http://www.chrisnaylor.co.uk/

FramerD
- A portable distributed object-oriented database designed to support the maintenance and sharing of knowledge bases.
- http://www.framerd.org/