| Internet Unternehmer Akademie | |
| Internet World | |
| Internet XS Service GmbH | Baden-Württemberg |
| Internet-Aktiv | |
| Internet-Büro Markus Bopp | North Rhine-Westphalia |
| Internet-Online-Marketing.de | Rhineland-Palatinate |
| Internet-Service Berlin | Berlin |
| Internet-Service Dresden | Saxony |
| Internetactive GmbH | Hesse |
| Internetagentur GRAFFIC | Saxony |
| Internetagentur Kreativdenker GmbH | |
| Internetagentur Rodenberg | Lower Saxony |
| Internetagentur Vanhaven | Berlin |
| Internetagentur Vogel | Thuringia |
| Internetassistenz Queißer & Mittag GbR | Saxony |
| Internetdienste Eisemuth | North Rhine-Westphalia |
| Internetentwicklungen | Hesse |
| Internetgarden | North Rhine-Westphalia |
| Internetguides - Christoph Gold | Bavaria |
| Internetrecht-Rostock.de | Hesse |
| Internetservice Frankfurt Internet Service | Hesse |
| internetstores GmbH | Baden-Württemberg |
| Internett GmbH | Saarland |
| Internetwarriors GmbH | Berlin |
| InternetWerk GmbH | Brandenburg |
| InterNetworX | Berlin |
| InterNetX GmbH | Bavaria |
| Intero Consulting GmbH | |
| Interone GmbH | |
| Interpuls GmbH | Bavaria |
| InterRank | Baden-Württemberg |
| InterRed | North Rhine-Westphalia |
| Interrogare | Hesse |
| InterSearch Executive Consultants GmbH & Co. KG | |
| InterSelect GmbH | |
| Intershop Communications AG | Thuringia |
| Intersoft AG | Hamburg |
| intersoft consulting services AG | Hamburg |
| Intertec | |
| Intertec Components GmbH | Bavaria |
| Interventional Systems | |
| Interview Prep AI | |
| Intervista AG | Brandenburg |
| INTES Ingenieurgesellschaft für technische Software mbH | Baden-Württemberg |
| Intevation GmbH | Lower Saxony |
| Intex Consulting GmbH | North Rhine-Westphalia |
| INTEX EDV-Software GmbH | Saarland |
| INtex Publishing GmbH & Co. KG | North Rhine-Westphalia |
| IntexSoft | |
| inTime Express Logistik GmbH | |