| Smart-hosting.ro | Satu Mare |
| Smart-X Net Apps | |
| Smartart | Sibiu |
| SmartBill | Sibiu |
| SmartDreamers | Bucharest |
| SmartFotovoltaic | |
| Smartnews | Mureș |
| SmartPoint Consulting | |
| Smartree Romania | Bucharest |
| SmartSpot | |
| SmartSystems | Bucharest |
| SmartTel | |
| Smith&Smith | |
| SnoterTech | |
| SOBIS Solutions S.R.L. | Bucharest |
| Soft & Service | |
| Soft Dreams | |
| Soft Expert | |
| Soft Ground | |
| Soft Net Consulting | |
| Soft Pepper Solutions | |
| Soft Systems | |
| Soft Tehnica | |
| Soft112 | Cluj |
| Soft32 | Sibiu |
| Soft82 | Constanța |
| Softbinator Technologies | |
| Softclaire | |
| Softeconomic | |
| Softeh Plus S.R.L. | Bucharest |
| Softelligence | |
| SoftexCo | Cluj |
| SoftexCo | |
| SoftExpert Mobility | Dolj |
| Softhaus | |
| Softia Web S.R.L. | |
| Softimobiliar CRM | Mureș |
| Softimpera | Cluj |
| Softimpera | |
| Softlab | |
| Softland S.R.L. | Cluj |
| Softlead | |
| Softlink Central Europe S.R.L. | |
| Softmagazin S.R.L. | |
| Softpedia | |
| SoftState Technologies | |
| Softventure | |
| SoftwareWatch | |
| SoftwareX S.R.L. | Bucharest |
| Softwin | Bucharest |