| Clockfort d.o.o. | |
| Cloud Centric | |
| Cloud Media | |
| Code Bears | |
| CodeFinesse | South Bačka |
| CodeIT | Belgrade |
| CodeReflect | |
| Codersy | |
| CodeSegment | Belgrade |
| CODETIQ | |
| Codetribe | South Bačka |
| Codeus IT | Nišava |
| Codexsto | |
| Colosseum Sports Tech Serbia | Belgrade |
| ComData d.o.o. | South Bačka |
| COMING - Computer Engineering | Belgrade |
| Comit International | |
| Computer Dream | Belgrade |
| Comtrade Distribution | Belgrade |
| Concord Solutions | |
| Connect Software Solutions d.o.o. | Belgrade |
| Crystal Pigeon | |
| CTshop | Belgrade |
| Cube Team | |
| Cubes d.o.o. | Belgrade |
| CubeScripts.com | Belgrade |
| Cyberlab | |
| DaFED | South Bačka |
| Danubio IT Services d.o.o. | |
| Data Solutions d.o.o. | Belgrade |
| DataDrill | |
| Dataland Software | South Bačka |
| DataVoyage | Zlatibor |
| Dayens d.o.o. | Mačva |
| DealDev | |
| Deboxd | |
| Decem | |
| DeedDesign Studio | Belgrade |
| Deo Posla d.o.o. | Belgrade |
| Deshodes | Belgrade |
| DESK Computers | Belgrade |
| Devana Technologies d.o.o. | Belgrade |
| DevSerbia Ltd | South Bačka |
| Dexsoft Games | South Bačka |
| Diamond Code | Belgrade |
| Digital Circle | |
| Digital Computers d.o.o. | South Banat |
| DIGITAL Direct | Belgrade |
| Digitalna Srbija | Belgrade |
| Digitalpro d.o.o. | Raška |