| Name | Type | Country |
|---|---|---|
| Genegis | Enterprise | Italy |
| GEOX TERINFORMATIKAI KFT | Enterprise | |
| Gerdau Aceros Especiales Europa | Enterprise | Spain |
| GiTy | Enterprise | Czech Republic |
| Grupo Innovati | Enterprise | |
| Grupo Santander de Investigación | Enterprise | |
| GTS-THAUMAT XXI S.A. | Enterprise | |
| Guide | Enterprise | France |
| Hellenic Telecommunications & Telematics Applications Company | Enterprise | Greece |
| Humanist | Enterprise |