The official formal version of the specification has been initially realized with the contribution of the following organizations:Alcatel, ARTISAN Software Tools, Carleton University, Commissariat à l’Energie Atomique, ESEO, ENSIETA, France Telecom, International Business Machines, INRIA, INSA from Lyon, Lockheed Martin, MathWorks, Mentor Graphics Corporation, NASA, No Magic, Software Engineering Institute (Carnegie Mellon University), Softeam, Telelogic AB, Thales, Tri-Pacific Software Inc., and Universidad de Cantabria.

The following persons were members of the core team that originally designed and wrote this specification (sorted in alphabetical order): Charles André, Jean-Philippe Babau, Pierre Boulet, Irv Badr, Arnaud Cuccuru, Gérard Cristau, Jérome Delatour, Cédric Dumoulin, Sébastien Demathieu, Robert De Simone, Huascar Espinoza, Madeleine Faugère, Sébastien Gérard, Mark Gerhardt, Peter Kortmann, Frédéric Mallet, Julio Medina, Alan Moore, Chokri Mraidha, Dorina Petriu, Laurent Rioux, Bran Selic, Safouan Taha, Jean-Pierre Talpin, Frédéric Thomas, Murray Woodside and Ben Watson.

In addition, the following persons contributed valuable ideas and feedback that significantly improved the content and the quality of this specification (sorted in alphabetical order): Jérôme Blanc, Joel Champeau, José María Drake, Thierry Gautier, Michael González Harbour, Jack Low, Benoît Masson, and Yves Sorel.