| Name | Region |
|---|---|
| STT Infopro | Var |
| Stuart | |
| Studec | |
| Studiel | Alpes-Maritimes |
| Studio 42 | Bas-Rhin |
| Studio Cigale | |
| Studio Coyote | Nord |
| Studio CQFD | Nord |
| Studio du Net | Mayenne |
| Studio M | |
| Studio Mercier | Paris |
| Studio multimedia Sympozium | Gironde |
| Studio Plune | Loire-Atlantique |
| Studio Resiliance | Manche |
| Studio Tycoz | Finistère |
| Studio-B | Hauts-de-Seine |
| Studio.gd | |
| StudioClick | Paris |
| Studiocom | Haute-Garonne |
| StudioSo2Media | Hauts-de-Seine |
| studioSPORT | |
| StudioWeb.net | Ariège |
| StudioXine | Gironde |
| Study Experience | |
| Study Quizz | Paris |
| Suadeo | |
| Sublime | Paris |
| Sublimeo | Haute-Garonne |
| Subsea Tech | |
| Substipharm | |
| Subvitamine | Hérault |
| Subweb | |
| Succubus Interactive | |
| Sud Automation | Haute-Garonne |
| Sud Informatique | Gard |
| Sud Management | |
| Sud Ouest | |
| Sud Télécom S.A.S. | Vaucluse |
| Sud-Impact | Gard |
| Sully Group | Métropole de Lyon |
| SUN ZU Lab | |
| Sun'R | |
| Sunapsis | Paris |
| Sunday | Paris |
| Sungen | |
| SupAirVision | |
| SupBiotech | |
| Super Capital | |
| SUPERBIEN | |
| Supercosi |