| Spirit Pixels | |
| Sportifico | Belgrade |
| Square 43 Studio | |
| StanCo IST | South Bačka |
| Startit | Belgrade |
| Stefan Propadic | |
| StepTo | |
| Studio Maximov | South Bačka |
| Studio Present | Belgrade |
| Studio Present d.o.o. | |
| StuntCodes d.o.o. | Belgrade |
| SuperAdmins | Belgrade |
| Superverse Industries | Belgrade |
| Sve za laptop | Belgrade |
| Svet Kompjutera | Belgrade |
| Swebdizajn Web Dizajn | Belgrade |
| SwiftyLabs | |
| Symbol International d.o.o. | Belgrade |
| TailorMade Productions | |
| Tech Tailors d.o.o. | |
| Tehnomanija d.o.o. | Belgrade |
| Tehnomarket internet prodavnica | Belgrade |
| Telekom Srbija | Belgrade |
| Telenor d.o.o. | Belgrade |
| TelNet Technologies | Belgrade |
| Tenderly d.o.o. | Belgrade |
| Tesha Design | South Bačka |
| TESO | |
| The DarkStar Soft | |
| TheOne | Belgrade |
| TIAC | South Bačka |
| TiCo Computers | Nišava |
| Tipping Point | South Bačka |
| Tirien IT tim | Belgrade |
| TISIA IT d.o.o. | |
| Titan Dizajn | Belgrade |
| TMS-Outsource | Belgrade |
| TNation | Belgrade |
| TNation | |
| TNT d.o.o. | Belgrade |
| TO-NET d.o.o. | South Bačka |
| Translized | Belgrade |
| Trigon dizajn studio Čačak | Moravica |
| TrimTab | |
| Trizma | Belgrade |
| TZARS | |
| UN1QUELY | |
| Unicom d.o.o. | Belgrade |
| Universitet u Kragujevcu - Institut za matematiku i informatiku | Šumadija |
| University of Niš | Nišava |