| Ettevõtte nimi | Reg. kood |
|---|---|
| SYSTERA OÜ | 10848464 |
| 7 SYSTERS OÜ kustutatud | 12745403 |
| SYSTEMA NORD OÜ (endine nimi Bauen Grupp OÜ) | 12311024 |
| 22 SYSTEMS OÜ | 14319917 |
| SYSTEMS OÜ | 16340169 |
| CALLIDUS SYSTEMS OÜ | 14482563 |
| NILAN SYSTEMS OÜ | 17150979 |
| KVN SYSTEMS OÜ (endine nimi OÜ Rebasesaba) | 12010009 |
| SIVIA SYSTEMS OÜ (endine nimi Ekstrapanus OÜ) | 11428929 |
| KV SYSTEMS OÜ | 17002693 |
| MOBIX SYSTEMS OÜ | 10588187 |
| ACTIVE SYSTEMS OÜ (endine nimi AUTOCOM OÜ) | 10989199 |
| LINKED SYSTEMS OÜ | 16327306 |
| BATTLEPATH SYSTEMS OÜ | 17508435 |
| QRAC SYSTEMS OÜ | 17438551 |
| ABBICELL SYSTEMS OÜ (endine nimi MBG Ekspert OÜ) | 11377073 |
| INTEGRAL SYSTEMS OÜ | 16893827 |
| DANTE SYSTEMS OÜ | 11175464 |
| SNS SYSTEMS OÜ | 16321219 |
| BONNER SYSTEMS OÜ | 10981045 |
| HEATING SYSTEMS OÜ | 12956749 |
| VARSON SYSTEMS OÜ | 12832384 |
| FGP SYSTEMS OÜ | 16086280 |
| PRIMERO SYSTEMS OÜ | 11193663 |
| WIGRY SYSTEMS OÜ | 12248194 |
| ODYSAIL SYSTEMS OÜ | 17222041 |
| PREMIUM SYSTEMS OÜ (endine nimi Premium Systems UÜ) | 14921293 |
| MERINEARING SYSTEMS OÜ | 17326510 |
| TECNOFOOD SYSTEMS OÜ | 11193522 |
| X SYSTEMS OÜ | 16045467 |
| DOGMATIC SYSTEMS OÜ | 12023124 |
| ORMIA SYSTEMS OÜ (endine nimi SOLIA OÜ) | 17235931 |
| ANZU SYSTEMS OÜ | 12905798 |
| DARTS SYSTEMS OÜ | 16962362 |
| DB-SYSTEMS OÜ | 16350854 |
| THERMO SYSTEMS OÜ (endine nimi Thermo System UÜ) | 14212036 |
| AL SYSTEMS OÜ (endine nimi AL Süsteemide OÜ) | 11126709 |
| GK SYSTEMS OÜ | 16467444 |
| TALSAR SYSTEMS OÜ | 17413812 |
| MENTHLY SYSTEMS OÜ | 17490617 |
| TRAVEL SYSTEMS OÜ (endine nimi Business Systems OÜ) | 14078247 |
| NORDIC SYSTEMS OÜ | 16296706 |
| DEPIN SYSTEMS OÜ | 16969476 |
| METROPRINT SYSTEMS OÜ (endine nimi Osaühing Intec Systems) | 10699567 |
| FIX SYSTEMS OÜ | 10650791 |
| KVD SYSTEMS OÜ | 12008001 |
| AUTOFUTUR SYSTEMS OÜ | 12015544 |
| 2SMART SYSTEMS OÜ | 14629670 |
| EL SYSTEMS OÜ | 17212918 |
| THE SYSTEMS OÜ | 11920092 |