| Company name | Reg. code |
|---|---|
| SOSO OÜ | 14191848 |
| SÕSU OÜ | 12924318 |
| RESTORANI SOS OÜ | 16283508 |
| TORU SOS OÜ | 12620564 |
| SOS RESCUE OÜ | 11443864 |
| SOS CCC OÜ kustutatud | 16369718 |
| KERLI SOSI PHOTOGRAPHY OÜ | 14210053 |
| TORU SOS GRUPP OÜ | 17111442 |
| MALEMBO SOSOLA OÜ | 12750930 |
| RINCOSANSIDRO CHORMILBARRO OÜ (former name SOS Grupp OÜ) | 14694851 |
| NORDAID OÜ (former name SOS Health OÜ) | 12082150 |
| ADD TRANSPORT OÜ (former name SOS Ehitusremont OÜ) | 11943756 |
| SYSO OÜ | 14270772 |
| SESO OÜ | 12161346 |
| OSSO OÜ kustutatud | 12287194 |
| YŌSO OÜ kustutatud | 16109147 |
| SASO OÜ (former name Sportjuveel OÜ) | 16843261 |
| POSÕ OÜ | 14416514 |
| SOLSO OÜ (former name Aaviku Fassaadid OÜ) | 10792284 |
| SOPO OÜ | 17072653 |
| SSOO OÜ | 14288163 |
| SONO OÜ | 12153753 |
| SOKO OÜ | 14248962 |
| LEMMIKTOIT OÜ (former name OÜ STMP Haldus) | 12868844 |
| SOO OÜ | 12138028 |
| OSO OÜ | 12229937 |
| SÖPÖ INVESTMENT OÜ | 16139757 |
| SONO COMPANY OÜ kustutatud | 16730249 |
| SERI COSO OÜ kustutatud | 12809959 |
| SASO WORKS OÜ | 17420344 |
| SOGO INTERNATIONAL OÜ kustutatud (former name Laava Partners OÜ) | 12905284 |
| MOSO TRADES OÜ | 16935052 |
| SOFO ONLINE OÜ | 16884159 |
| JOSO VESI OÜ kustutatud | 11288398 |
| MOSO LILLESTUUDIO OÜ | 17076757 |
| SOGO SYSTEMS OÜ | 12890111 |
| BINARY SOLO OÜ | 16743588 |
| YOSO LIFESTYLE OÜ kustutatud | 14129973 |
| SOLO TRADE OÜ | 14700787 |
| SOOS INVESTMENTS OÜ | 11293347 |
| STOSO HOME OÜ | 16405822 |
| SOLO EVENTS OÜ | 16901449 |
| MARTENS SOLO OÜ | 14462945 |
| SOLO STOCK OÜ kustutatud | 16300827 |
| SOLO TUR OÜ kustutatud | 10590385 |
| KOSO SALES OÜ | 17409733 |
| SOLO PRODUCTIONS OÜ | 16448694 |
| SOLO KINNISVARA OÜ | 16385628 |
| SOLO EHITUS OÜ kustutatud | 16275012 |
| SOLO ARHITEKTUUR OÜ kustutatud | 16093305 |