| Ettevõtte nimi | Reg. kood |
|---|---|
| OP SOLUTIONS OÜ | 17633591 |
| OPEN SOLUTIONS OÜ kustutatud | 11080120 |
| OPAC SOLUTIONS OÜ | 17423124 |
| OPEN SOLUTIONS OÜ kustutatud | 16603226 |
| OPES SOLUTIONS OÜ kustutatud | 17104979 |
| OPLAN SOLUTIONS OÜ | 16997260 |
| OPTIMA SOLUTIONS OÜ | 14183122 |
| OPERAIL SOLUTIONS OÜ (endine nimi MK Belarena OÜ) | 12421273 |
| OPTIMUM SOLUTIONS OÜ (endine nimi Starmalon OÜ) | 11126833 |
| OPTIQUAD SOLUTIONS OÜ | 17048809 |
| OPENRANGE SOLUTIONS OÜ | 17517836 |
| OPTIGROUP SOLUTIONS OÜ | 11325142 |
| LAVATAGUSED OÜ (endine nimi Optimalz Solutions UÜ) | 16489055 |
| OPEN SOURCE SOLUTIONS OÜ kustutatud | 14591105 |
| OPEN ENGINEERING SOLUTIONS OÜ | 17038254 |
| OPTIMAL SECURITY SOLUTIONS OÜ kustutatud | 11724221 |
| OPTIMAL PRODUCTS AND SOLUTIONS OÜ kustutatud | 14874889 |
| GREECENAV OPTIMIZATION SOLUTIONS OÜ | 17185788 |