| Sogeti | Hauts-de-Seine |
| Sogetrel | Hauts-de-Seine |
| Soitec | Isère |
| Soladis Group | |
| Solean | |
| Soledge | |
| Soledis | Morbihan |
| SolicITeam | Bouches-du-Rhône |
| Solidpepper | Pyrénées-Atlantiques |
| Solidshield | Alpes-Maritimes |
| Solis System | Gard |
| Sollan | Hauts-de-Seine |
| SoloLearn | |
| Solstys | Côtes-d'Armor |
| Solsys Informatique | Val-d'Oise |
| Soluce Informatique Pornic | Loire-Atlantique |
| Soluceo | Isère |
| Solulog | Isère |
| Solumag.fr | Isère |
| Solune S.A.S. | Haute-Vienne |
| Solunea | |
| Solusquare | Paris |
| SoluTechnic | Seine-et-Marne |
| SOLUTICES Informatique | Tarn |
| Solution BI | Paris |
| Solution Informatique | Loiret |
| Solution Micro | Haute-Loire |
| Solution PC | Sarthe |
| SolutionData | |
| SolutioNet | Eure |
| Solutions Boutiques | Alpes-Maritimes |
| Solutions et applications RFID | Paris |
| Solutions Exchange | Yvelines |
| Solutions Informatiques | |
| Solutions intranet et travail collaboratif | Paris |
| Solutions Numériques | Paris |
| Soluxa S.A.R.L. | Haut-Rhin |
| Solvace | |
| Solware | Métropole de Lyon |
| Solystic S.A.S. | Hauts-de-Seine |
| Somei S.A. | |
| SOMM'IT | |
| Sonilog Interactive S.A.R.L. | Paris |
| Sonio S.A.S. | |
| Soone | Haute-Saône |
| Sooyoos | |
| Sopedi | |
| Sophia Antipolis | Alpes-Maritimes |
| Sophia Business Angels | Alpes-Maritimes |
| Sophia Engineering | |