• Alfred-wegener-institut Helmholtz-zentrum Fur Polar- Und Meeresforschung

  Research Research organisation

• All-russian Research Institute of Hydrometeorological Information-world Data Centre

• Allinea Software Limited

  Software Tools Company

• Alma Sistemi Srl

• Alstom Ferroviaria Spa

• Amcc Deutschland Gmbh

• Amra - Analisi E Monitoraggio Del Rischio Ambientale Scarl

• Andor Technology Limited

• Andoya Space Center As

• Ankara Universitesi

• Answaretech Sl

• Anwendungszentrum Gmbh Oberpfaffenhofen

• Appentra Solutions Sl

• Arab States Research and Education Network Asren Gemeinnutzige Gmbh

• Arcoptix Sa

• Arctur

• Arctur Racunalniski Inzeniring Doo

• Arh Informatikai Zartkoruen Mukodo Reszvenytarsasag

• Aristotelio Panepistimio Thessalonikis

• Arm