| Company name | Reg. code |
|---|---|
| Q10Q HOLDING OÜ (former name Sminvesth Financials OÜ) | 14918144 |
| Q&Q TEENUSED OÜ (former name HyggeLove OÜ) | 16044459 |
| Q&Q BUILDING OÜ | 14257062 |
| Q&Q CONSTRUCTION OÜ | 14370172 |
| Q88 OÜ | 17257565 |
| Q17 OÜ kustutatud | 16561462 |
| Q777 OÜ | 16010615 |
| Q2L OÜ | 17434174 |
| Q-ROU OÜ | 16131566 |
| Q NORD OÜ | 16812007 |
| BOBO Q OÜ | 14825783 |
| Q-WAY OÜ kustutatud (former name Q-Way UÜ) | 12996424 |
| Q FILM OÜ | 10168443 |
| JAA- Q OÜ kustutatud | 12133321 |
| Q-NAR OÜ | 16371632 |
| Q VARI OÜ | 14698719 |
| Q TRADE OÜ kustutatud | 14075482 |
| Q EVENT OÜ kustutatud | 12632066 |
| Q-EDGE OÜ | 16705062 |
| Q-WOOD OÜ kustutatud | 12075144 |
| Q-TREM OÜ (former name qreml OÜ) | 12734730 |
| Q TAKSO OÜ | 12443808 |
| Q-DAMM OÜ | 12299145 |
| Q-CARS OÜ | 11784594 |
| Q ITSEC OÜ | 16149796 |
| Q-MIND OÜ | 12748956 |
| Q AUDIT OÜ | 14849070 |
| Q VARAD OÜ (former name OÜ Alexmark) | 14612043 |
| Q HOUSE OÜ | 14636658 |
| Q-LUCK OÜ | 14156496 |
| Q2 LAND OÜ | 17091343 |
| Q VARAD OÜ kustutatud (former name 2L Trading OÜ) | 12316688 |
| Q INVEST OÜ kustutatud | 11230358 |
| Q-INFRA OÜ kustutatud | 12179665 |
| Q-PLAAT OÜ | 16011626 |
| Q-GRUPP OÜ | 16128110 |
| Q BRANCH OÜ | 16206459 |
| Q-DRIVE OÜ (former name CFMOTO Estonia OÜ) | 14710372 |
| Q PREFAB OÜ kustutatud (former name Revolution Prefab OÜ) | 14644244 |
| Q BALTIC OÜ kustutatud | 12746868 |
| Q HEALTH OÜ | 16837562 |
| Q-SEITSE OÜ | 14984000 |
| Q KAHEKSA OÜ | 17137246 |
| Q SOFTLAB OÜ kustutatud | 14489364 |
| Q FINANCE OÜ | 17393707 |
| Q FINANTS OÜ | 17196958 |
| Q PROJECT OÜ | 14945112 |
| Q FINANTS OÜ kustutatud (former name Terbium grupp OÜ) | 12936286 |
| Q FINANTS OÜ kustutatud (former name SVH OÜ) | 14432005 |
| Q-WESTEX OÜ kustutatud | 11384038 |