| Banque Transatlantique | |
| Barcoda | |
| Bassetti Group | Isère |
| Bastard Informatique | Haute-Garonne |
| Bastille | |
| Bastion | |
| Batch | |
| Batima Electronic | Bas-Rhin |
| Bayesia S.A.S. | Mayenne |
| Bayo | Yonne |
| Bazile Telecom S.A. | Bouches-du-Rhône |
| Bazimo | |
| bb&b communication et marketing industriel | |
| BBox News | Paris |
| BBS consultant internet | Nord |
| BBS Informatique | Eure-et-Loir |
| BCI Aerospace | |
| BCI Pharma | Hérault |
| BCV (Basecamp Vascular) | |
| BD Multimedia | Paris |
| BDL Informatique | Maine-et-Loire |
| Be Activ'IT | |
| Be API | Paris |
| Be Cloud | |
| Be Soft | Bouches-du-Rhône |
| Be-Cloud | |
| Be-Coworking | |
| Be-Net | |
| be-ref Internet | Isère |
| Beamy S.A.S. | |
| Béarn Informatique | Pyrénées-Atlantiques |
| Bearstech | Paris |
| BeCheck | |
| Bechtle Comsoft | Paris |
| BECI | Seine-et-Marne |
| Beeldi | |
| Beem Energy | |
| BeesApps | |
| Beesbusy | |
| BeeToGreen | |
| Beetween | |
| Beev | |
| BeezUP S.A.S. | Paris |
| BeFC | |
| BeGoodinweb.com | Indre |
| Bel Air Informatique S.A.R.L. | Essonne |
| Belem | Paris |
| Belisoft S.A.S. | |
| Belive.ai | |
| Belle Époque | |