| Sofixit | |
| Soft Ekspert Sp. z o.o. | Silesian |
| Soft Kraft Sp. z o.o. | |
| Soft-Project | Lower Silesian |
| Soft-Trans | Masovian |
| Soft360 | |
| SoftBlue S.A. | |
| SoftCom Sp. z o.o. | Pomeranian |
| Softdog Sp. z o.o. | |
| Softech | |
| Softenet | Silesian |
| Softeris Systemy Informatyczne | |
| SoftForYou Sp. z o.o. | |
| Softinet Sp. z o.o. | |
| Softiq Sp. z o.o. | |
| Softiq Sp. z o.o. | |
| SoftKiwi | |
| Softman S.A. | |
| Softnauts | |
| SoftNet Sp. z o.o. | |
| SoftPoint Sp. z o.o. | Masovian |
| Softroids | |
| Softroids Sp. z o.o. | |
| SoftSystem Sp. z o.o. | |
| Softtutor Consulting | |
| Software Bay Sp. z o.o. | |
| Software Brothers Sp. z o.o. | |
| Software Development Academy | Pomeranian |
| Software EOD Sp. z o.o. | Lower Silesian |
| Software Hub Sp. z o.o. | |
| Software Interactive | |
| Software Mansion S.A. | |
| Software Mind | |
| Software Test Group | Silesian |
| Software Things Sp. z o.o. | |
| Software-House.eu Sp. z o.o. | |
| SoftwareHut | Podlaskie |
| SoftwareMill | Masovian |
| SoftwarePATCH | Masovian |
| SoftwareStudio Sp. z o.o. | Greater Poland |
| SoftwareSupp Sp. z o.o. | |
| Softwizard | |
| Softworks | Masovian |
| Soho Development S.A. | |
| Sokrates Software | Masovian |
| Solar Innovation | |
| Sold App Sp. z o.o. | |
| Solid Security | |
| Solidexpert Polska Sp. z o.o. Sp. k. | Lesser Poland |
| Solidstudio | |