| Name | Region |
|---|---|
| Creative Brains | Sofia |
| Creative Corner Studio | |
| Creative Point | Sofia |
| Creative Web Bulgaria | Sofia |
| Creativeideas | Sofia |
| Creativity Design Studio | Sofia |
| Creotech | |
| Cryptoken Media | Sofia |
| CSoft | Varna |
| Cytec BG Ltd | |
| D&G Technology | Sofia |
| DAIS | Sofia |
| Daisy Technology | Sofia |
| Daskal.eu | Sofia |
| Data Science Society | Sofia |
| Data Solutions | Sofia |
| Datacenter Bulgaria | Sofia |
| DataMax | Sofia |
| Datamax Ltd | Sofia |
| Datecs Ltd | Sofia |
| Daticum | Sofia |
| DAVID Holding Company | Sofia |
| Deafor Ltd | |
| Deep Dream Generator | |
| DeepSource Ltd | |
| DeFFacto | |
| Dekada Digital | Sofia |
| Dekom | Sofia |
| Delinx.Digital | Sofia |
| DelivMe | Sofia |
| Delta.BG | Sofia |
| Denkovi Assembly Electronics Ltd | Varna |
| Desc Satellite | Sofia |
| Descom | Sofia |
| Design Studio 42 | Sofia |
| Dev In Action | |
| DEV.BG | Sofia |
| DevAspect | |
| Develop Soft Ltd | |
| Devision | Sofia |
| devlabs | Varna |
| Devnox | Veliko Tarnovo |
| DevriX | Sofia |
| DevScale | Sofia |
| DevStyle.io | Sofia |
| Devtitans Ltd | Sofia |
| DevUnit | Sofia |
| DIANIC | Sofia |
| DieS Web | Sofia |
| Digi.bg | Sofia |