| bond Software-Entwicklung GmbH | Saarland |
| bonify | Berlin |
| BONN Elektronik GmbH | Bavaria |
| Bonner Linux Users Group | North Rhine-Westphalia |
| Bonnie & Byte Berlin GmbH | |
| Bookhit-GmbH | North Rhine-Westphalia |
| BookingData IO GmbH | |
| Bookingkit GmbH | |
| bookingkit GmbH | |
| Boost Internet GmbH | |
| BOOT - Best of Open Technologies e.V. | Hamburg |
| Boot-US | Baden-Württemberg |
| Bootify | |
| Bopfinger Bank Sechta-Ries eG | |
| BOPLA Gehäuse Systeme GmbH | North Rhine-Westphalia |
| Bor!sgloger Consulting GmbH | Baden-Württemberg |
| Bora Computer GbR | North Rhine-Westphalia |
| Boreus GmbH | Mecklenburg-Vorpommern |
| BORGWARE GmbH | Baden-Württemberg |
| Borlabs GmbH | |
| Borm Informatik GmbH | North Rhine-Westphalia |
| born2web | North Rhine-Westphalia |
| Börsig GmbH | Baden-Württemberg |
| Borucinski Grafix | Hesse |
| BOS Gesellschaft für EDV-Beratung + Organisation + Software mbH | Rhineland-Palatinate |
| Bosch Mobility | |
| Bosch Rexroth AG | Bavaria |
| Bosch Semiconductors for Automotive | |
| Bosch Sensortec GmbH | |
| Bosch Sicherheitssysteme GmbH | Baden-Württemberg |
| Bosch.IO GmbH | |
| Bosenet | Berlin |
| Bosnar GmbH | |
| Botcamp.ai | |
| BoTech-EDV | Hesse |
| Botoni | North Rhine-Westphalia |
| botspot AG | |
| böwa GmbH | Bremen |
| BÖWE SYSTEC GmbH | Bavaria |
| Boxcryptor | Bavaria |
| BOXIT LabSoftware | Berlin |
| Bp Event by Bankettprofi GmbH | Rhineland-Palatinate |
| BPI Solutions GmbH & Co. KG | North Rhine-Westphalia |
| bps Software GmbH & Co. KG | North Rhine-Westphalia |
| Bracht EDV Handelsvertretung e.K. | North Rhine-Westphalia |
| BraDaTec | North Rhine-Westphalia |
| Bradler & Krantz GmbH & Co. KG | North Rhine-Westphalia |
| Bragi GmbH | Bavaria |
| BRAIN Biotech AG | |
| Brainbot Technologies AG | Rhineland-Palatinate |