| Company name | Reg. code |
|---|---|
| MAPSER OÜ | 14079778 |
| MAPSERV OÜ (former name Mapek Projekt OÜ) | 12341551 |
| MADSER OÜ (former name MadSor OÜ) | 14095990 |
| MAKSER OÜ kustutatud | 10024303 |
| SAPSER OÜ | 11280638 |
| MANSER OÜ (former name Golden Square OÜ) | 12253226 |
| MASER OÜ kustutatud | 16267648 |
| MAPAES OÜ | 12920556 |
| MAPSON OÜ kustutatud | 10527955 |
| MAPLERI OÜ | 10223505 |
| MAPEST OÜ | 12801780 |
| MAPLES OÜ | 14246377 |
| MAPPEL OÜ kustutatud | 12780517 |
| HUBER MANSER OÜ (former name Huber Manser Family Office OÜ) | 16006364 |
| MAISER PROJEKT OÜ | 11034611 |
| MACSER GRUPP OÜ | 16020306 |
| APSER NAVI OÜ | 14304726 |
| MASER - MONTAAŽ OÜ | 14493549 |
| HÄPSTER OÜ (former name BSR Interactive OÜ) | 14243597 |
| DAPPER OÜ kustutatud | 14057662 |
| APSERT OÜ | 17340088 |
| FASSER OÜ | 14729360 |
| KATSER OÜ kustutatud | 14133437 |
| CAPSTER OÜ | 12710571 |
| JASPER OÜ kustutatud | 12647178 |
| BAUSER OÜ | 16310808 |
| CARSER OÜ | 14566834 |
| KAMSER OÜ | 14231654 |
| KALSER OÜ | 10850886 |
| JAPMER OÜ | 14885433 |
| KAPSEL OÜ | 16121757 |
| CASPER OÜ | 10837118 |
| KAPPER OÜ | 16292507 |
| JAASER OÜ kustutatud | 10221475 |
| HASSER OÜ | 10383858 |
| KAISER OÜ | 12174633 |
| AMPSERV OÜ | 17174974 |
| MAPEV OÜ | 16945984 |
| MAPAR OÜ kustutatud | 14481374 |
| MAPEK OÜ | 12411205 |
| MAPLEM SRVCS OÜ | 17007839 |
| MAPLEX DEVELOPMENT OÜ | 16693181 |
| MAPLES GROUP OÜ | 14781573 |
| MAPERA GRUPP OÜ | 17098530 |
| TEHTUD TEENUSED OÜ (former name Maple Works OÜ) | 16567631 |
| KASPER VENTURES OÜ | 17400092 |
| KASPER-TRANSPORT OÜ | 10101896 |
| KÄSPER GROUP OÜ | 10422446 |
| JANSER GLOBALS OÜ | 17267820 |
| JASPER TECHNOLOGIES OÜ kustutatud | 14532982 |