| FastSolution | Sofia |
| Finansiv | Sofia |
| Finite Software Systems Ltd | Sofia |
| Fintrade AD | Sofia |
| Fire Bull Design Studio | Sofia |
| Fly System Ltd | Sofia |
| FocusOn | |
| FoDesigns | Sofia |
| Fontfabric | Sofia |
| Forschung-Direkt GmbH | Ruse |
| fragaX | |
| Fram Creative Solutions | Sofia |
| Fram Fintech | Sofia |
| Freehostia | Sofia |
| FreelanceSuite | Varna |
| Freshcode | |
| Frontstep | Sofia |
| FTS Group | Sofia |
| Fund Manager of Financial Instruments in Bulgaria | Sofia |
| Fundamental Studio | |
| Fuss | |
| Future-proof Software Ltd | |
| Futures Capital | Sofia |
| Futurist Labs | |
| G23.NET Ltd | Sofia |
| Gameservers | Sofia |
| GarGarage | Sofia |
| GearSix | |
| Genera Studio | Sofia |
| Generic Soft | Sofia |
| GenSoft | Sofia |
| Geodeya Soft | Stara Zagora |
| Global Consulting Ltd | Sofia |
| Global IT Solutions | Sofia |
| Global System Solutions | Sofia |
| Global Tech Summit | Sofia |
| Gold Telecom Bulgaria JSCo | Sofia |
| Grafixsoft | Sofia |
| Green.Click | Sofia |
| Grind | |
| Hack | Sofia |
| HackConf | Sofia |
| hacker.works | Sofia |
| HackSoft | Sofia |
| Haemimont Games | Sofia |
| Haeminont | Sofia |
| Hardware Group Ltd | |
| hardwareBG.com | Sofia |
| Hartona Ltd | |
| Healee | Sofia |