| Name | Region |
|---|---|
| Zenpark | Paris |
| Zento | |
| Zephyre | |
| Zeplug | |
| Zero Games Studios | |
| Zéro-Gâchis | |
| Zetoolbox | |
| Ziggourat Formation | Paris |
| Zillion Pulse | Paris |
| Ziwig | |
| Ziwit | |
| Zodiac Milpro | |
| Zoftware | Paris |
| ZOL | Métropole de Lyon |
| Zolo | |
| Zone ADSL | Paris |
| ZOOMICI | |
| Zozio | |
| Zsphere | |
| ZTI Communications | Côtes-d'Armor |
| ZW France | Indre-et-Loire |
| ZypZap | Paris |
| Zyvon | Paris |
| ZyXEL France | Métropole de Lyon |
| [IDnum] | Paris |