| Insuma | Baden-Württemberg |
| InsureQ GmbH | |
| Insurninja GmbH | |
| InsurTech | North Rhine-Westphalia |
| InsurTech Hub Munich e.V. | |
| InSysCo Datensysteme GmbH | Rhineland-Palatinate |
| InSyst GmbH | North Rhine-Westphalia |
| int2code | |
| Intakt-Computerservice GmbH | North Rhine-Westphalia |
| IntareS GmbH | Hamburg |
| Intec Digital Solutions GmbH | Bavaria |
| Intec Electronic GmbH | Rhineland-Palatinate |
| Intec Gesellschaft für Informationstechnik mbh | North Rhine-Westphalia |
| INTEC International GmbH | Baden-Württemberg |
| Intechcore GmbH | |
| Integer Solutions GmbH | Hesse |
| Integra Internet Management GmbH | Hamburg |
| Integrata AG | Baden-Württemberg |
| integrate-it Netzwerke GmbH | |
| Integrated Dynamics Engineering GmbH | Hesse |
| Integrated Systems AG | Baden-Württemberg |
| Integration.net GmbH | |
| Integreat | |
| INTEGRIS LIMS GmbH | Saxony |
| Integrity Next GmbH | |
| Intellekta GmbH | North Rhine-Westphalia |
| Intellicon GmbH | Saarland |
| Intelligent Data Systems GmbH | North Rhine-Westphalia |
| Intelligent Fluids GmbH | |
| Intelligent Media Systems AG | Baden-Württemberg |
| Intelligent Research in Sponsoring GmbH | |
| Intellior AG | Baden-Württemberg |
| IntellIoT | |
| IntelliShop AG | Hesse |
| Intellitools GmbH | |
| IntelliTrend GmbH | North Rhine-Westphalia |
| Intellixx GmbH | |
| Intenso International GmbH | Lower Saxony |
| Intent GmbH | Bavaria |
| Inter-Tech Elektronik Handels GmbH | Lower Saxony |
| Inter.link | |
| INTERAC GmbH | |
| Interactive Instruments Gesellschaft für Software-Entwicklung mbH | North Rhine-Westphalia |
| Interactive Network GmbH | |
| interactive tribe GmbH | North Rhine-Westphalia |
| Interactive Wear AG | Bavaria |
| Interaktiv GbR | Baden-Württemberg |
| Interaktive.net | Baden-Württemberg |
| Interap Softwareentwicklung GmbH & Co. KG | Baden-Württemberg |
| InterARtist | Hesse |