| Name | Type | Country |
|---|---|---|
| Comunicaciones y Ocio Interactivo S.L | Association | Spain |
| Comversa Comunicaciones y Desarrollo | Enterprise | Spain |
| CONFEDERATION OF ORGANISATIONS IN ROAD TRANSPORT ENFORCEMENT AISBL | Enterprise | |
| Consiglio Nazionale delle Ricerche | Association | Italy |
| Consorzio ZAILOG | Enterprise | Italy |
| CreativIT | Enterprise | Spain |
| CSIC | Association | Spain |
| DANTIA TECNOLOGIA, S.L. | Enterprise | España |
| DataCloud Norte | Enterprise | Spain |
| Datik | Enterprise | Spain |