- QuizMaster for Matthew CMA-PNW edition
- QuizMaster for Matthew CMA-WPA edition
- QuizMaster for Romans & James CMA-PNW edition
- QuizMaster for Romans & James SA edition
- QuizMaster Manager 2009
- QuizMaster Manager 2012
- QuizMe 1.0
- QuizMenu
- QuizMenu 2.0
- QuizNightChief
- Quizp
- QuizPack 0.4 Beta
- QuizPro
- QuizPro 3.4.4
- QuizTest
- QuizTime
- Quizulator 1.0 beta
- Quizulous
- Quizulous2 Toolbar
- quizulous_v1 Toolbar
- quizulous_v2 Toolbar
- Quizulous_v2b Toolbar
- Quizulous_v3b Toolbar
- QuizWave 1.0
- QuizXpress
- QuizXpress Studio 3.3.1.101
- QuizzerX 20.5.4.15
- Qumana
- Qumana 2.0
- Qumana 3.2.3
- Qunetix ESD
- Quo
- Quo 2.4.3
- Quobi 2.0.1.3
- Quobi 2.0.1.4
- Quobi Game Recorder
- Quobject Designer 1.1
- Quobject Explorer 1.1
- QuoBox 2.5.9
- Quod Libet
- Quod Libet 2.2.1
- Quoddix Text
- QUODfm
- Quoll Writer
- QuomationPDFPrinter
- Quoots 0.8.2
- Quopia
- Quorafox 1.1
- Quorum 1.00
- Quorum 2.0
- Quorum Call Conference Software 2.01
- Quorum Conference Server
- Quorum Conference Server (formerly Quorum) 2.02 Beta
- QuorumSoft Alike
- QUOSA Information Manager
- Quota checker 1.0
- Quota Checker mini 1.6
- Quota Manager 1.0
- QuotaSatellite
- QuotaSatellite 1.3