| Startup-City Düsseldorf | |
| Startup-Stuttgart e.V. | |
| StartupCon | North Rhine-Westphalia |
| StartupDorf e.V. | |
| startupnight.net | North Rhine-Westphalia |
| Startupradio.de | Hesse |
| Startups & Places | |
| StartupSpot | Hamburg |
| StartupTV | |
| StartupValley Magazine | Baden-Württemberg |
| StartupValley.news | |
| starway Internetservice & Softwareentwicklung | North Rhine-Westphalia |
| Stat Control GmbH | Hamburg |
| STATCON GmbH | Hesse |
| Statista | |
| Statron Gerätetechnik GmbH | Brandenburg |
| Statsoft (Europe) GmbH | Hamburg |
| Status Research & Development GmbH | |
| Staufen AG | |
| Staufenberg Digital GmbH | North Rhine-Westphalia |
| STC Elektronik GmbH | Thuringia |
| Steadybit GmbH | |
| Steca Elektronik GmbH | Bavaria |
| Steel Office von Gutsch & Exner Software GmbH | Lower Saxony |
| Steem.ai | |
| Steenbrink Vormgeving | |
| Steeped Software Germany GmbH | |
| Stefan Georgi Technology | Thuringia |
| Stefan Maischner | Saxony |
| Stefano Picco Internet Concepts | North Rhine-Westphalia |
| Steffen Broscheit | Saxony-Anhalt |
| Steffers GmbH | North Rhine-Westphalia |
| STEFLA-WEB GbR | Lower Saxony |
| Steganos Software GmbH | Hesse |
| Steimer Leiterplatten GmbH & Co. KG | North Rhine-Westphalia |
| STEIN Automation GmbH & Co. KG | |
| Steinbach - Fernmeldetechnik GmbH | Bavaria |
| Steinberg Design | North Rhine-Westphalia |
| Steiner Elektronik Technologie GmbH | Bavaria |
| Steinhaus Informationssysteme GmbH | Baden-Württemberg |
| STEINHOFF Automation & Fieldbus-Systems | Brandenburg |
| Steinkress Software Development GmbH | Bavaria |
| STEKRA Software | Bavaria |
| STEL-Multimedia GmbH | Berlin |
| STELLAR Professional Communication Systems GmbH | North Rhine-Westphalia |
| Stellatech | Brandenburg |
| StellDirVor GmbH | |
| Stellenanzeigen.de GmbH & Co. KG | |
| STELLWERK Consulting AG | North Rhine-Westphalia |
| Stemmer Imaging AG | Bavaria |