| ID | Name | Type |
|---|---|---|
| #11737 | Qualtech Software | Z |
| #20166 | QuangDX | - |
| #11738 | Quant Systems | Z |
| #11739 | Quanta | ? |
| #17642 | Quantum Hardware Services (Quantum Electronic Services) | R |
| #11740 | Quantum Leap Systems | Z |
| #11741 | Quantum Press | Z |
| #11742 | Quantum Productions | Z |
| #19441 | Quantum Sheep | - |
| #11743 | Quantum Soft | Z |
| #15933 | Quantum Software | S |
| #11744 | Quark Data | ? |
| #11745 | Quartermaine | ? |
| #11746 | Quasar | - |
| #11747 | Quasar Software | Z |
| #11748 | Quasimodo Soft | Z |
| #11749 | Que Corp | ? |
| #11750 | Queen Anne | ? |
| #11751 | Queen Soft | Z |
| #11752 | Queensgate Productions Ltd | Z |