| Desk-Normandie | Calvados |
| DESMAREZ S.A. | |
| Desmo Labs | |
| Dev-id | |
| Devacom | Loire-Atlantique |
| Devanciers | |
| Devconseil | Creuse |
| Devcorp | Paris |
| Devellyn | |
| Develop'it | Paris |
| Developpez.com | |
| Devisubox | Bouches-du-Rhône |
| devops.works | |
| Devoteam | Hauts-de-Seine |
| Devoxx France | |
| Dexem | Ille-et-Vilaine |
| Dexter Informatique | |
| Dexxon Groupe | Hauts-de-Seine |
| DEYA | |
| dF Informatique | Val-de-Marne |
| DFC Engineering | Hérault |
| DFi Labs S.A.S. | |
| Dfns S.A.S. | |
| DFT | Bouches-du-Rhône |
| DGTV | |
| DH Informatique | Bas-Rhin |
| DHS | Val-d'Oise |
| DIA-LOG S.A.R.L. | Meurthe-et-Moselle |
| Dia-Logiciel | Sarthe |
| Diabeloop S.A. | |
| Diabeloop S.A. | |
| Diaccurate S.A. | |
| DiaDeep | |
| Diafir S.A. | |
| Diagast | |
| Diagnostic et Formation S.A.S. | Paris |
| Diagram Informatique | Loire |
| Diagrams Technologies | |
| DIAGS | Métropole de Lyon |
| DialogFeed | |
| Dialotel | |
| Dianosic | |
| Dianosic | |
| Diatec | Puy-de-Dôme |
| Diatech | Tarn-et-Garonne |
| Diatem | Bas-Rhin |
| Diatrace | Essonne |
| Diaxens | Seine-et-Marne |
| DIB-France | Yvelines |
| Dicel Electronics | Isère |