- Research group about an access-limited KR language called Algernon which is expressive and efficient.
- A description logic project at Bell Labs.
- Sowa's site about Conceptual Graphs
- Sowa's Conceptual Graphs - from the same site
- Research group on Conceptual Graphs
- Maryland's high performance KR system
- Semantic Networks, Ontology applications and more.
- A new research program for building large knowledge bases quickly.
- The people who made the Ontolingua server.
- Interdisciplinary research group on ontology at LADSEB-CNR
- The pioneering company which aims to make a knowledge base that decodes our common sense
- The group who have made SHOE and PARKA projects.