| Abbreviation | Definition |
|---|---|
| QFDS | Quigo Fraud Detection Server |
| QFE | Quaternion Fractal Explorer |
| QFEU | Quick Fix Engineering Update |
| QFR | Quite Flight Rules |
| QFU | Quick File Utility |
| QFW | QMF for Windows |
| QHD | QSound High Definition audio library |
| QIG | Quick Installation Guide |
| QIM | Quick Installer Maker |
| QIP | Quiet Internet Pager |
| QIS | Q-devices Information System |
| QIV | Quick Image Viewer |
| QJN | Quaternion Julia Navigator |
| QJP | Quick Japanese Processing |
| QKC | Quick Kanji Converter |
| QKF | Quick Key Function |
| QKP | quadratic knapsack programming |
| QKS | Quiver Knowledge Suite |
| QKW | QuicKeys for Windows |
| QKX | QuicKeys X |