| MoonWorks Media | Bavaria |
| Moorweb | Lower Saxony |
| Mopius Mobile GmbH | |
| MOPS Computer GmbH | North Rhine-Westphalia |
| More Communication | North Rhine-Westphalia |
| more3D GmbH & Co. KG | |
| moreDATA GmbH | |
| Morefire GmbH | North Rhine-Westphalia |
| Moresophy GmbH | Bavaria |
| Morgana Castle - Internet Solutions GmbH | Baden-Württemberg |
| morgentau | |
| Morphais HSTL Technologies GmbH | |
| MorphoSys AG | |
| Morressier | |
| MOS Electronic GmbH | Baden-Württemberg |
| Mosaique Diagnostic GmbH | |
| mosaiques diagnostics GmbH | |
| Moser Datentechnik GmbH | Berlin |
| Moskito Geo Informations Systeme GmbH | North Rhine-Westphalia |
| Moss | |
| MOST Cooperation | Baden-Württemberg |
| Motekk Media GmbH | North Rhine-Westphalia |
| Moth Software Mainz | Rhineland-Palatinate |
| Motherland | |
| Motionet AG | |
| MotionMiners GmbH | |
| MotionsCloud | |
| motivation analytics UG (haftungsbeschränkt) | Baden-Württemberg |
| moto [intermedia] | |
| Motor AI | |
| Motor Ai GmbH | |
| Motorbyte Software GmbH | Baden-Württemberg |
| Motrona GmbH | Baden-Württemberg |
| Motum5 Systemhaus GmbH | Bavaria |
| Mountain Trading House GmbH | |
| MOVEO Software GmbH | Brandenburg |
| movetech IT-Solutions | |
| Movilitas Consulting GmbH | Baden-Württemberg |
| Moving Intelligence GmbH | |
| Moving Targets Consulting GmbH | |
| Movis GmbH | Hesse |
| mowaSYSTEMS GmbH | |
| Möwe Studio | |
| MOWEA GmbH | |
| moxd lab | North Rhine-Westphalia |
| mozok GmbH | |
| mp group GmbH | Hesse |
| MP-Multimedia e.K. | Hesse |
| MP3TAG | Saxony |
| MPC Münchmeyer Petersen IT Services GmbH | |