| Walter Lemmen GmbH | Bavaria |
| Walter Nagel GmbH & Co. KG | North Rhine-Westphalia |
| Walter Peter Industrieautomation GmbH & Co. KG | North Rhine-Westphalia |
| Walter Ritter GmbH & Co. KG | |
| WAM-Service GmbH | Schleswig-Holstein |
| Wandelbots GmbH | Saxony |
| Wandelbots GmbH | |
| Wanko GmbH | Bavaria |
| Wannemacher Software Service GmbH | Bavaria |
| WapplerSystems | North Rhine-Westphalia |
| wareconsult GmbH & Co. KG | Baden-Württemberg |
| WAREHaus GmbH | North Rhine-Westphalia |
| WARGdrones GmbH | |
| Warranti Holding SE | |
| Warranty Solutions GmbH | |
| Wassermann Technologie GmbH | |
| WaterVent | |
| WAVE Distribution & Computersysteme GmbH | Hesse |
| Wavecon GmbH | Bavaria |
| WB Computertechnik GmbH | Schleswig-Holstein |
| WBS Blank Software GmbH | Hesse |
| WBS IT-Service GmbH | Saxony |
| WBS IT-Service GmbH | |
| WBS Training | |
| wd-systems Thomas Wagner | Hesse |
| WDRL | Bavaria |
| WDRW | Rhineland-Palatinate |
| WDS Software & Service GmbH | North Rhine-Westphalia |
| wdv Gesellschaft für Medien & Kommunikation mbH & Co. oHG | Hesse |
| WDV GmbH | Bavaria |
| We are Uhl & Friends | Rhineland-Palatinate |
| we22 Solutions GmbH | |
| We4IT GmbH | Bremen |
| WeAdvise | |
| wealthpilot GmbH | |
| Wear It Berlin GmbH | |
| web & IT Solutions | Bavaria |
| WEB 'n ROLL | |
| Web Agency Berlin | Berlin |
| Web Commerce GmbH | Baden-Württemberg |
| Web und App | |
| WEB-4 STUDIO Media Solutions | Bavaria |
| Web-Agentur 72 Ltd & Co.KG | Baden-Württemberg |
| Web-aktiv | |
| Web-Art-Pix | |
| web-context.de | North Rhine-Westphalia |
| Web-Grafix | Baden-Württemberg |
| web-netz GmbH | Lower Saxony |
| Web-Publishing Ronge | Bavaria |
| web-ready | |