The following organizations and institutions have been participating in the Excalibur project network activities:
Tampere University
Tampereen klassillinen lukio
Università Telematica degli Studi
Gesamtschule Windeck
ITCG Angioy Carbonia
Collège Hartmann
Let’s talk online
The Arctic University of Norway
Hittorf Gymnasium
Hardautalschule Suderburg
Fjell ungdomsskule
Gymnázium Třebíč
Vuores school, Tampere
TeacherGaming
Landesmedienzentrum Baden-Württemberg
St. Bernhard Grund- und Realschule
Kirkkoharju school, Kangasala
ISTITUTO TECNICO ECONOMICO E TECNOLOGICO “Gaetano Salvemini”
Dafnord ry