| # | name | members |
|---|---|---|
| 1 | Arizona State University | [1] Raphael M Malyankar |
| 2 | Boeing | [1] Mike Uschold |
| 3 | Ca' Foscari University of Venice | [1] Massimo Marchiori |
| 4 | CNR | [1] Michele Missikoff |
| 5 | CognIT | [0] |
| 6 | ConfMan | [0] |
| 7 | Coolheads Consulting | [2] Steve Newcomb; Michel Biezunski |
| 8 | CWI Amsterdam | [1] Lynda Hardman |
| 9 | DAML | [0] |
| 10 | DARPA/IXO | [1] Murray Burke |
| 11 | Deutsches Forschungszentrum für Künstliche Intelligenz (DFKI) | [1] Harold Boley |
| 12 | EU/IST | [1] Hans-Georg Stork |
| 13 | European Commission | [1] David Pearce |
| 14 | FORTH-ICS | [2] Vassilis Christophides; Dimitris Plexousakis |
| 15 | France Télécom | [0] |
| 16 | Franklin W. Olin College of Engineering | [1] Lynn Andrea Stein |
| 17 | Hewlett-Packard | [1] Brian McBride |
| 18 | IBM Tokyo Research Laboratory | [1] Masahiro Hori |
| 19 | IBM Zurich Research Laboratory | [1] Jana Koehler |
| 20 | iBrow | [0] |
| 21 | INRIA Rhône-Alpes | [1] Jérôme Euzenat |
| 22 | INTAP | [1] Noboru Shimizu |
| 23 | Karlsruhe Institute of Technology | [2] Steffen Staab; Rudi Studer |
| 24 | Knowledge Systems Laboratory | [0] |
| 25 | LABSEB-CNR | [1] Nicola Guarino |
| 26 | Lehigh University | [1] Jeff Heflin |
| 27 | LEKS/CNR Roma | [0] |
| 28 | LORIA | [1] Amedeo Napoli |
| 29 | Lucent | [1] Peter F. Patel-Schneider |
| 30 | Mizogushi Lab, Osaka | [1] Riichiro Mizoguchi |
| 31 | NEC | [1] Noboru Shimizu |
| 32 | Network Inference | [1] Peter Crowther |
| 33 | Nokia | [0] |
| 34 | Nokia Research | [1] Ora Lassila |
| 35 | NSF | [1] Bhavani Thuraisingham |
| 36 | On To Knowkledge | [0] |
| 37 | Ontoprise GmbH | [0] |
| 38 | OntoWeb | [0] |
| 39 | RWTH Aachen University | [1] Uli Sattler |
| 40 | Sandpiper software | [0] |
| 41 | Sapienza University of Rome | [1] Tiziana Catarci |
| 42 | Stanford University | [5] Stefan Decker; Sheila McIlraith; Richard Fikes; Natalya Noy; Deborah McGuinness |
| 43 | Technical University of Madrid | [1] Asunción Gómez-Pérez |
| 44 | The Open University | [1] Enrico Motta |
| 45 | University of Amsterdam | [2] Maarten de Rijke; Guus Schreiber |
| 46 | University of Arizona | [1] Jeremy Frumkin |
| 47 | University of Cagliari | [1] Nicoletta Dessí |
| 48 | University of Connecticut | [1] Steven A. Demurjian |
| 49 | University of Georgia | [1] Amit Sheth |
| 50 | University of Illinois at Chicago | [1] Isabel F. Cruz |
| 51 | University of Maine | [1] Max J. Egenhofer |
| 52 | University of Manchester | [1] Ian Horrocks |
| 53 | University of Maryland, Baltimore County | [1] Tim Finin |
| 54 | University of Maryland, College Park | [1] James Hendler |
| 55 | University of Queensland | [1] Peter Eklund |
| 56 | University of Southampton | [1] Nicholas R. Jennings |
| 57 | University of West Florida | [1] Pat Hayes |
| 58 | VU University Amsterdam | [4] Ying Ding; Heiner Stuckenschmidt; Frank van Harmelen; Dieter Fensel |
| 59 | W3C | [1] Massimo Marchiori |
| 60 | WonderWeb | [0] |