| Microshop | Iași |
| MICS Software | Suceava |
| MidoWeb | |
| Mimio Romania | Iași |
| Mind Magnet Software | |
| Mindit.io | |
| Mindomo | Timiș |
| Minic Studio | |
| Minitechnicus | |
| Mioritix Media | |
| Mizutech S.R.L. | Brașov |
| Mobile Direct | Neamț |
| Mobile Touch | |
| Mobile-News.ro | Bucharest |
| MobileAcademy.ro | |
| Mobiversal S.R.L. | |
| MOCAPP | |
| Modulo Consulting S.R.L. | Bucharest |
| MoldoWEB | |
| Momentum Software | |
| Monitorizare-Video | Bucharest |
| MOON | |
| MOOS Project Viewer | Dolj |
| Moqups | |
| Morphosis Capital | Bucharest |
| Mozaik Consulting S.R.L. | Cluj |
| mReady | |
| msg systems Romania S.R.L. | |
| MTD Technology | |
| Multinvest Group | |
| Multiplan Electronics | Mureș |
| MultiSoft | Constanța |
| MVP Academy | Bucharest |
| Mxhost | Bistrița-Năsăud |
| My PC Timișoara | Timiș |
| MySoft S.R.L. | |
| Namebox | |
| Nanolabs | |
| Napoca Software | |
| National Supervisory Authority for Personal Data Processing | Bucharest |
| Native Studio | |
| Natural Research | |
| NAV Communications | |
| Nav Communications S.R.L. | Bucharest |
| Navitech Systems S.R.L. | |
| NCS Inspire | Cluj |
| nDive Tech | |
| Nearshore-Romania | |
| Nedeco | Sibiu |
| NELBO | |