| Abbreviation | Definition |
|---|---|
| QCT | Quality CASE (Computer-Aided Software Engineering) Tools |
| QCX | QuakeC Extreme |
| QDG | QuickDraw GX |
| QDK | Quarterdeck |
| QDK | Quick Development Kit |
| QDK | QuickPlace Developers Kit |
| QDL | Quake Demo Launcher |
| QDM | QUALCOMM Digital Media |
| QDP | QNX Developer Program |
| QDP | Quantitative Depth Profiling |
| QDP | Quantum Desktop Playback |
| QDP | Quick Delivery Program |
| QDQ | Quake Done Quick |
| QDS | Quick Draw System |
| QDU | Quake Demo Utility |
| QDW | QuickDraw for Windows |
| QECIS | QEC Internet Services |
| QEMU | Quick EMUlator |
| QES | Qualified Electronic Signature |
| QF | Quality Format |