| Name | Type | Country |
|---|---|---|
| SERIKAT | Enterprise | |
| Sidenor I+D | Enterprise | Spain |
| Sidenor Industrial | Enterprise | Spain |
| SITTA Silleria de Oficina S.L.L | Enterprise | Spain |
| Smart Track Solutions S.L. | Enterprise | |
| Social Media Technologies | Enterprise | Spain |
| Socosevi | Enterprise | Spain |
| Software AG | Enterprise | Germany |
| Solid Rock IT Araba S.L. | Enterprise | Spain |
| SQS | Enterprise | Spain |