| Working System e.K. | Baden-Württemberg |
| Workist GmbH | |
| WorkMotion Software GmbH | |
| Workpath GmbH | |
| Workroom Consulting & Design | North Rhine-Westphalia |
| Workstreams.ai | |
| World Creator | |
| World Semiconductor Trade Statistics | |
| World Wind Energy Association | North Rhine-Westphalia |
| World2Web Internetservices | Bavaria |
| Worldweb Oerke Internetkommunikations oHG | Lower Saxony |
| Wörner EDV-Systeme | Baden-Württemberg |
| Wortmann AG | North Rhine-Westphalia |
| Wössner Bürocentrum GmbH | Baden-Württemberg |
| Wostbrock | Bremen |
| WOW Tech Europe GmbH | |
| WP Wissensportal GmbH | Bavaria |
| WP-Soft GmbH | Bavaria |
| wp.DATA Kommunikations GmbH | North Rhine-Westphalia |
| WPCubed | Bavaria |
| wpd onshore GmbH & Co. KG | |
| WPS - Workplace Solutions GmbH | Hamburg |
| wpt-online rund ums Internet GmbH & Co. KG | North Rhine-Westphalia |
| WPWA Team GmbH | |
| WQS Management Consultants | North Rhine-Westphalia |
| WR Systemsoftware | North Rhine-Westphalia |
| writeaguide UG (haftungsbeschränkt) | |
| Writeseed | |
| WRS Softwareentwicklung GmbH | North Rhine-Westphalia |
| WS IT Service GmbH | |
| WS-Spalluto GmbH | Baden-Württemberg |
| WSB Werbeagentur GmbH | Saxony |
| WSCAD GmbH | Bavaria |
| WSK-Elektronik GmbH | Baden-Württemberg |
| WSV Systemhaus GmbH | |
| WSW Software GmbH | Bavaria |
| WT Systems GmbH | |
| wtec Services GmbH | |
| WTF Kooperative eG | |
| WTG Holding GmbH | |
| WTS electronic components GmbH | Lower Saxony |
| WubscH Consulting GmbH | Bavaria |
| Wuekro Electronic GmbH & Co. KG | Bavaria |
| Wulfsoft | North Rhine-Westphalia |
| Wunder GmbH | Hamburg |
| Wunder GmbH | |
| Wunder Mobility | |
| Wunderdata GmbH | |
| Wunderlich Elektronik GmbH | Lower Saxony |
| Wunderpresentation | |