| Digitaz | South Bačka |
| Digitizer | Belgrade |
| Diligent Software | |
| Dizajn Zona | Belgrade |
| DNA d.o.o. | Belgrade |
| DNG Studio | |
| Dolap | Nišava |
| Dragana Djermanović | South Bačka |
| Dream Technologies Group d.o.o. | Belgrade |
| Drustvo za Informatiku Srbije | Belgrade |
| Dual | Rasina |
| DunavNET | South Bačka |
| E-CAPS d.o.o. | South Bačka |
| E-SEO Team | Belgrade |
| e-Serbia design | Belgrade |
| EdTech Center Western Balkans | Belgrade |
| Eemagine Works d.o.o. | |
| Eklektika Web Design Company | Belgrade |
| Elbert Virtual Games | Belgrade |
| Electronic Design | Belgrade |
| ELITE Solution Web Technologies | Belgrade |
| Elkom | Belgrade |
| Emmi | Belgrade |
| Energosoft | South Bačka |
| Enetel Solutions | Belgrade |
| Engineers | |
| Enigmatic | Belgrade |
| Entitet d.o.o. | South Bačka |
| eOffice Network d.o.o. | |
| Epix Entertainment | South Bačka |
| Esteh d.o.o. | Belgrade |
| EtonDigital DOO | |
| Eurodesk d.o.o. | Belgrade |
| EUtelNet design & development | Belgrade |
| Evropski Univerzitet | |
| Ewasoft | South Bačka |
| Ewe COMP | Belgrade |
| EX Ecentar d.o.o. | Belgrade |
| Exdizajn | Belgrade |
| EXE Digital Marketing | |
| Exe Net Advertising d.o.o. | Nišava |
| Execom, d.o.o. | South Bačka |
| Exeshop.rs | Belgrade |
| Eximius Solutions Ltd | |
| ExN | |
| Explicit Design | Belgrade |
| Extreme d.o.o. | Belgrade |
| eXtreme ProHosting | Belgrade |
| eZarada | Belgrade |
| Factory World Wide | Belgrade |