| blogads.de Albia Media GmbH | |
| blogfoster GmbH | Berlin |
| Blohm Consulting GmbH | Schleswig-Holstein |
| Bloofusion Germany GmbH | North Rhine-Westphalia |
| Bloola GmbH & Co. KG | |
| Bloomblisser GmbH | |
| blösch.partner GmbH | |
| BLP Software GmbH | Baden-Württemberg |
| Blubbsoft GmbH | |
| Blue Ant | |
| Blue Ball Media | North Rhine-Westphalia |
| Blue Frost Security GmbH | |
| Blue Image GmbH | Baden-Württemberg |
| Blue IT Systems GmbH | |
| Blue Label Soft | Mecklenburg-Vorpommern |
| blue networks GmbH & Co. KG | Hesse |
| Blue Performance GmbH | |
| Blue Summit Media GmbH | Bavaria |
| Blue3w.com | Schleswig-Holstein |
| blue:solution software GmbH | North Rhine-Westphalia |
| BlueBerk GmbH | |
| BlueBox GmbH | North Rhine-Westphalia |
| BlueCap Personalberatung GmbH | Hamburg |
| bluechip Computer AG | |
| BluelionWebdesign | Hamburg |
| Bluepartner GmbH | Berlin |
| Blueshell | Hamburg |
| blueSIP | Bavaria |
| BlueStoneDesign | |
| blueyed | Saarland |
| Bluhm Systeme GmbH | Rhineland-Palatinate |
| BM Interconsult | Saxony |
| BM-T Beteiligungsmanagement Thüringen GmbH | Thuringia |
| BMA-SOFT | Hesse |
| BMC Messsysteme GmbH | Bavaria |
| BMG Labtech | |
| bmp Ventures AG | |
| bms GmbH | North Rhine-Westphalia |
| BMS Systems Gesellschaft für Kommunikation und Datenverarbeitung mbH | |
| bmsoft Information Technologies GmbH | |
| BMTS Technology GmbH & Co. KG | |
| BMU Beratungsgesellschaft Mittelständischer Unternehmen mbH | Lower Saxony |
| BMW Startup Garage | Bavaria |
| BMZ Digital.Global | |
| BMZ Germany GmbH | |
| BMZ Technisch-Wissenschaftliche Software GmbH | Baden-Württemberg |
| BN Automation AG | Thuringia |
| BNP Paribas S.A. Niederlassung Deutschland | |
| BNS GmbG | North Rhine-Westphalia |
| Bob Bochmann & Oborski GmbH | North Rhine-Westphalia |