KEO would also like to thank its partners who are no longer participants in the project. This separation was due to KEO's rising needs for resources and expertise to achieve its mission.

As KEO developed, its needs superseded the volume of resources that certain of its past partners could offer free of cost.

Their contributions were precious and important in the developing stages of KEO. KEO would like to sincerely thank them for all their support:
Galaxy, H3D, Inspiration France, La Guilde, Systèmes et Informations, Le Bureau, Pixcell, Publipress, SBBD, The Phone House, Worldnet, Porter et Novelli, La Financière de Brienne, L'Internationale de l'Education, Le Conseil Economique de la Défense, BDDP, ABPR. .