| Maerki Baumann & Co. AG | |
| Magelo S.A. | Geneva |
| Magic Systems | Aargau |
| MagicSpace SEO | |
| Magnolia International Ltd | Basel-Landschaft |
| MailCleaner | Vaud |
| Mailweaver | Lucerne |
| Malaxit | Aargau |
| MapTiler | |
| Marc Véron AG | Basel-Landschaft |
| Marcel A. Hug Informatik GmbH | Zurich |
| MarcSimum Support | Aargau |
| Marine Electronic S.à.r.l. | Vaud |
| Martha Software GmbH | Aargau |
| Marti IT Services | Solothurn |
| Martin Grandjean | |
| Martin Weiss Informatik AG | Zug |
| Martinig & Associates | Vaud |
| Master 21 | |
| Masterhomepage GmbH | Basel-Stadt |
| Mastertools GmbH | Aargau |
| MathConsult Ltd | Schwyz |
| Mathias Hartmann Werbung | Zurich |
| Mathys AG Bettlach | |
| Matronic S.A. | Valais |
| MAW Software Ltd | Schwyz |
| MaxiVAX | |
| Mayoris AG | Zug |
| Mazero | Geneva |
| Mazursoft GmbH | Lucerne |
| MBaer Merchant Bank AG | |
| mCHinformatique | Neuchâtel |
| MCS Software AG | Bern |
| MDF-BIS S.A. | Vaud |
| Measys | Solothurn |
| Mechmine, LLC | |
| Medacta International | |
| Medartis AG | |
| media.art | Zurich |
| Mediadiscount.ch | Aargau |
| Mediagraphix | Zurich |
| MediaGroup Worldwide AG | Zug |
| Medigene AG | |
| Medio-Ingeno AG | Zurich |
| Medmix | |
| Meerstetter Engineering GmbH | Bern |
| Megacad-Center GmbH | Zurich |
| Mégamail | Vaud |
| Megaphone | |
| Mégaphone Internet | Vaud |