| Bright Future GmbH | |
| Bright Solutions GmbH | |
| Brighter AI Technologies GmbH | |
| Briink Intelligence GmbH | |
| Bringoo GmbH | |
| Brinkel, Sachsenröder, Wartenberg GbR, Studio Bosco | |
| Broadcast Solutions GmbH | |
| Brockmann Consult GmbH | |
| Brodos AG | Bavaria |
| Broetje-Automation GmbH | |
| Brokadata AG | North Rhine-Westphalia |
| Brose Systeme GmbH | Berlin |
| Brother International GmbH | Hesse |
| BrowseEmAll | Bavaria |
| BROWSEO | Hesse |
| Brückner Aktuelle Bürosysteme GmbH | Hamburg |
| BRW Industrie Automation GmbH | North Rhine-Westphalia |
| BRZ Bremer Rechenzentrum GmbH | Bremen |
| BS Berliner Systemhaus KG | Berlin |
| BS Payone GmbH | Hesse |
| BS PAYONE GmbH | |
| BS-Systeme GmbH | Bavaria |
| BS2 Sicherheitssysteme GmbH | |
| BSB Bremer Software & Beratungs GmbH | Bremen |
| BSB Software GmbH | Bavaria |
| BSC Computer GmbH | Hesse |
| BSD GmbH | Baden-Württemberg |
| BSD User Group Hamburg | Hamburg |
| BSK Service GmbH | Rhineland-Palatinate |
| BSM BankingSysteme und Managementberatung GmbH | Hesse |
| BSS Business Solutions for Services GmbH | |
| BSS Systemtechnik GmbH | Saarland |
| BT- Becker Technologies GmbH | |
| BT-IT GmbH | Lower Saxony |
| BTA Video Marketing GmbH | Berlin |
| BTB Shop | Bavaria |
| BTC IT Services GmbH | |
| BTG Beteiligungsgesellschaft Hamburg mbH | |
| BTL BüroTechnik Leasing GmbH | Rhineland-Palatinate |
| BTV Systemhaus Berlin | Berlin |
| Buchhaltung-mühelos.de | |
| BuchPartner GmbH | |
| Buck IT-Consulting | Baden-Württemberg |
| Bücker GmbH | North Rhine-Westphalia |
| Bücking & Leube GmbH & Co. KG | North Rhine-Westphalia |
| Bucom PC-Laptop-Center | Berlin |
| Budde E&L GmbH | North Rhine-Westphalia |
| Budge UG (haftungsbeschränkt) | |
| Bug & Fix Computerservice | Brandenburg |
| Buhl Data Service GmbH | North Rhine-Westphalia |