| One TECH | Tunis |
| Onlytech Tunisie | Sfax |
| Oradist | Tunis |
| Orange Fab Tunisie | Tunis |
| Orange Tunisie | Tunis |
| Ouest Software | |
| Pixel Design | Nabeul |
| PIxels Trade | Tunis |
| Progress Engineering Tunisie | Ariana |
| Proxym Group | Sousse |
| RayenSoft | Sousse |
| Réseau National Universitaire et de Recherche | Tunis |
| Riyeda | Tunis |
| RoamSmart S.A. | Tunis |
| Same Team | Tunis |
| SamsTech | Ariana |
| SCCI | Sfax |
| Scoop Informatique | Tunis |
| SCSI.tn | |
| SEA Electronics | Sousse |
| SFM Telecom | Tunis |
| SIGA | Tunis |
| SinopeSoft | |
| Smart Tunisia | Tunis |
| Société tunisienne de banque | Tunis |
| Somieet | Sfax |
| SPG | Tunis |
| SRA Intégration | |
| ST2i | Ariana |
| Stelfair Tunisia | Tunis |
| Strategis IT Consulting | Tunis |
| SuperNet Solutions | Ariana |
| Systèmes Informatiques Tunisi | Ben Arous |
| Systeo | Sfax |
| Takiano | Tunis |
| Tanitoss | Tunis |
| TanitWeb | Tunis |
| TDS | Sfax |
| Techno Pointe | Tunis |
| The DOT | Tunis |
| TIME Université | |
| TMI | Tunis |
| Tools4com Ltd | Tunis |
| Topnet | Sousse |
| Tritux | Tunis |
| TUNAV | Ariana |
| TunDev | Tunis |
| Tunewtec | Tunis |
| Tunis-Medindustrie | Tunis |
| Tunisie Câbles | Tunis |