| File extension | The full name of the file |
|---|---|
| File extension Q0 | Japanese Q0 Bitmap Image |
| File extension Q00 | Quicken 2000 |
| File extension Q01 | Quicken 2001 |
| File extension Q06 | QuickTax 2006 |
| File extension Q07 | QuickTax 2007 Tax Return Format |
| File extension Q08 | QuickTax 2008 Tax Return Format |
| File extension Q09 | QuickTax 2009 Tax Return Format |
| File extension Q1 | Winamp Equalizer Preset Format |
| File extension Q1Q | LunarCell Adobe Photoshop Plug-in Format |
| File extension Q2 | Winamp Auto-load Preset Format |
| File extension Q2D | Quick3DCover Design Format |
| File extension Q2PLUG | Quake 2 For Mac Game |
| File extension Q2Q | Flexify Adobe Photoshop Plug-in Format |
| File extension Q2RENDERER | Quake 2 For Mac Renderer Extension |
| File extension Q3C | Quick3DCover Project Format |
| File extension Q3D | Quickdraw 3D Format |
| File extension Q3X | QuickDraw 3D Extension |
| File extension Q4Q | Solar Cell Adobe Photoshop Plug-in Format |
| File extension Q5Q | SuperBladePro Preset |
| File extension Q5R | Melancholytron Adobe Photoshop Plug-in Format |
| File extension Q7Q | India Ink Plug-in Format |
| File extension Q8R | Flood Adobe Photoshop Plug-in Format |
| File extension Q98 | Quicken 98 |
| File extension Q9R | Glitterato Adobe Photoshop Plug-in Format |
| File extension Q9S | Mr. Contrast Adobe Photoshop Plug-in Format |
| File extension QAD | Corel WordPerfect Office Thumbnail |
| File extension QAG | Norton Desktop Quick Access Group |
| File extension QAP | Omnis Quartz Application |
| File extension QAR | QlikView Plug-in Format |
| File extension QAT | Microsoft Office Quick Access Toolbar Info |
| File extension QB | Diploma Question |
| File extension QB1 | Quicken Data |
| File extension QB2005 | QuickBooks 2005 For Mac Backup Format |
| File extension QB2006 | QuickBooks 2006 For Mac Backup Format |
| File extension QB2007 | QuickBooks 2007 For Mac Backup Format |
| File extension QB2008 | Quickbook 2009 For Mac Backup |
| File extension QB2009 | QuickBooks 2009 For Mac Backup Format |
| File extension QB2010 | QuickBooks 2010 For Mac Backup Format |
| File extension QB2011 | QuickBooks 2011 For Mac Backup Format |
| File extension QB2012 | QuickBooks 2012 For Mac Backup Format |
| File extension QB2013 | QuickBooks 2013 For Mac Backup |
| File extension QB2014 | QuickBooks For Mac 2014 Backup |
| File extension QBA | QuickBooks Accountant Review Copy |
| File extension QBB | QuickBooks Backup Format |
| File extension QBD | Quicken Keyboard Layout |
| File extension QBE | Corel Quattro Pro Saved Query |
| File extension QBI | QuickBooks Image |
| File extension QBK | QuickTax Backup Format |
| File extension QBL | Business Lawyer Document |
| File extension QBM | QuickBooks Portable Company Format |
| File extension QBMB | QuickBooks Backup Format |
| File extension QBMD | QuickBooks Backup Format |
| File extension QBO | QuickBooks Online Bank Statement Format |
| File extension QBP | QuickBooks Printer |
| File extension QBQUERY | MySQL Query Browser Saved SQL Query Command |
| File extension QBR | Quickbooks Report Template |
| File extension QBT | QuicBooks Temporary Rebuild |
| File extension QBW | QuickBooks Company Format |
| File extension QBX | QuickBooks Accountant Transfer Format |
| File extension QBY | Quickbooks Accountants Import |
| File extension QC | Quake C Script Format |
| File extension QC-EMOD | QuadraComposer Audio |
| File extension QCD | QuarkXpress Article |
| File extension QCF | Microsoft QBasic Coordinates |
| File extension QCH | Quicken DOS Data |
| File extension QCI | Massively Parallel Quantum Chemistry Program |
| File extension QCK | Jigsaw 2 Astrological Tool |
| File extension QCN | Qualcomm QPST Drive Backup |
| File extension QCOW | QEMU Copy-On-Write |
| File extension QCOW2 | QEMU Copy-On-Write |
| File extension QCP | Qualcomm PureVoice QCELP Recorder And Player Voice Format |
| File extension QCT | QuarkXpress Article Template |
| File extension QD0 | Omnis Quartz Segment 10 Data |
| File extension QD1 | Omnis Quartz Segment 1 Data |
| File extension QD2 | Omnis Quartz Segment 2 Data |
| File extension QD3 | Omnis Quartz Segment 3 Data |
| File extension QD3D | QuickDraw 3D Meta |
| File extension QD4 | Omnis Quartz Segment 4 Data |
| File extension QD5 | Omnis Quartz Segment 5 Data |
| File extension QD6 | Omnis Quartz Segment 6 Data |
| File extension QD7 | Omnis Quartz Segment 7 Data |
| File extension QD8 | Omnis Quartz Segment 8 Data |
| File extension QD9 | Omnis Quartz Segment 9 Data |
| File extension QDA | Quadruple D Archive Format |
| File extension QDAT | Quicktime Installer Cache |
| File extension QDB | Quicken Backup Format |
| File extension QDC | Quick Devis Database |
| File extension QDF | Quicken Financial Data Format |
| File extension QDF-BACKUP | Quicken Financial Data Backup Format |
| File extension QDFM | Quicken For Mac Data Format |
| File extension QDFX | Quicken Essentials For Mac Financial Data Exchange Format |
| File extension QDI | Quicken Dictionary Data |
| File extension QDK | QEMM Startups Backup |
| File extension QDL | QDL Source Code Format |
| File extension QDLX | Quicken For Mac Data |
| File extension QDM | FsQCA Data |
| File extension QDP | MPQDraft Plugin Format |
| File extension QDR | Q-Dir Configuration |
| File extension QDS | Windows Directory Query Format |
| File extension QDT | QuarkXpress Auxiliary Dictionary Format |
| File extension QDV | Random Dot QDV Bitmap Image |
| File extension QE4 | Kingpin Life Of Crime Settings |
| File extension QED | Memory-Map Navigator Map |
| File extension QEF | Microsoft Excel Query |
| File extension QEL | Quicken Electronic Library Format |
| File extension QEM | ExpensAble Report |
| File extension QES | Askiadesign Questionnaire |
| File extension QEX | ExpensAble Data |
| File extension QF | Nokia (Ovi) Maps Version Format |
| File extension QFC | QuickFileCollection Archive |
| File extension QFD | Quicken Data |
| File extension QFI | Quicken 2002 Data |
| File extension QFILTER | Mac OS X ColorSync Filter |
| File extension QFL | Family Lawyer Document |
| File extension QFN | Apple QuickTime Font |
| File extension QFP | Quicken Financial Planner Add-on |
| File extension QFS | Need For Speed Tracks Trk000 |
| File extension QFX | Quicken Financial Exchange Format |
| File extension QGIS | Quantum GIS Project |
| File extension QGS | Quantum GIS Project |
| File extension QHC | Qt Help Collection |
| File extension QHCP | Qt Help Collection Project |
| File extension QHF | QIP Saved History |
| File extension QHP | Qt Help Project |
| File extension QHT | Apple QuickTime HTML |
| File extension QHTM | Apple QuickTime HTML |
| File extension QIC | Microsoft Windows 95/98 Backup Format |
| File extension QID | Quicken |
| File extension QIF | Quicken Interchange Format |
| File extension QIN | CARE-S InfoWorks Inflow |
| File extension QIP | QIP Infium Account |
| File extension QIT | Backdoor.QIT Trojan Horse Format |
| File extension QIX | Quicken DOS Data |
| File extension QKEX | QuicKeys Mac Extension |
| File extension QKPT | KaleidaGraph |
| File extension QKR | Quickr Attachment Link |
| File extension QKT | Microsoft Works |
| File extension QKY | Linux Quirky Kernel Format |
| File extension QL | Qedit |
| File extension QLB | Microsoft QuickBasic Library |
| File extension QLC | Adobe PostScript Help |
| File extension QLD | MassLynx Quantation Data |
| File extension QLGENERATOR | Apple Quicklook Plug-in Format |
| File extension QLI | Statler Stitcher |
| File extension QM | Qt Compiled Translation Source Format |
| File extension QM3 | Articulate Quizmaker Compressed |
| File extension QM4 | Qmail Options Or Services |
| File extension QMA | Qedit |
| File extension QMB | Quick Menu Builder Saved |
| File extension QMBL | LabQuest Results |
| File extension QMD | Quicken Win Version 5/6 Backup |
| File extension QME | Quicken Win Version 3 |
| File extension QMETHOD | AB SCIEX MultiQuant Quantitation Method |
| File extension QMF | IBM Lotus Approach Database Query |
| File extension QMG | Samsung Theme Picture Image File - Qmage File Format |
| File extension QMK | YanCEyDesktop Bookmark Format |
| File extension QML | Quicken DOS Data |
| File extension QMP | SeeYou Raster Map |
| File extension QMSB | Questionmark Secure |
| File extension QMT | Quicken Memory List |
| File extension QMTF | Intuit Quicken Data |
| File extension QNT | Chromeleon Quantification Method |
| File extension QNX | Quicken Index |
| File extension QOB | QuickBooks 2010 Pro |
| File extension QOT | Sierra Print Artist Quotes |
| File extension QP03 | Qpress Compressed Archive |
| File extension QP1 | QuickPar Cache |
| File extension QP2 | QuickPar Cache |
| File extension QPA | Quicktime Player Addition |
| File extension QPB | Quicken Payroll Format |
| File extension QPC | KaleidaGraph Plot |
| File extension QPCT | KaleidaGraph Plot |
| File extension QPD | Quicken QuickPay Windows 3.0 Add-on |
| File extension QPF | Quartus II Project Format |
| File extension QPH | Intuit Quicken Price History Format |
| File extension QPI | Quicken Win Version 3 |
| File extension QPJ | Quantum GIS Project |
| File extension QPL | KaleidaGraph Layout |
| File extension QPM | Quick Pallet Maker Input Data Format |
| File extension QPR | FoxPro Database Query |
| File extension QPROJ | FreeQ IDE Project |
| File extension QPS | Timeasure |
| File extension QPT | QuarkXPress Project Template Format |
| File extension QPW | Corel Quattro Pro Spreadsheet Format |
| File extension QPX | FoxPro Compiled Executable QBE Query Format |
| File extension QQ | BLU Archive |
| File extension QQQ | TotalFix Fixed AVI |
| File extension QR2 | Delphi Database Quick Report |
| File extension QRC | Qt Resource Collection Format |
| File extension QRF | QR Form |
| File extension QRM | Qworum Message Format |
| File extension QRP | Dr. Hardware Format |
| File extension QRS | Corel WordPerfect Equation Editor Support |
| File extension QRT | Qrt Ray-Tracer Ray-traced Bitmap Image |
| File extension QRY | Database Query Format |
| File extension QSC | Kaleidagraph Script |
| File extension QSD | Quicken Data Format |
| File extension QSESSION | AB SCIEX MultiQuant Quantitation Session |
| File extension QSF | Qualtrics Survey Format |
| File extension QSK | Quintessential Player Skin |
| File extension QSP | QSetup Installation Suite |
| File extension QSR | CARE-S InfoWorks Water Quality Simulation Results |
| File extension QSS | Nokia Qt Style Sheet Format |
| File extension QST | Ami Pro Quickstart Tutorial Image |
| File extension QSTY | KaleidaGraph Style |
| File extension QSU | Zelda Classic Quest |
| File extension QSV | Jigs@w Saved Puzzle State |
| File extension QSX | QuickSurf |
| File extension QT | Apple QuickTime Movie Clip |
| File extension QTB | ExamView QuickTake Question Bank |
| File extension QTC | Apple QuickTime Support |
| File extension QTCH | Apple QuickTime Cached Format |
| File extension QTF | Qtracker Filter |
| File extension QTI | Apple QuickTime Image Format |
| File extension QTIF | Apple QuickTime Image Format |
| File extension QTINDEX | Adobe QTIndex Format |
| File extension QTK | Apple QuickTake Picture Image |
| File extension QTL | YUV SECAM Or PAL Image |
| File extension QTM | Apple QuickTime Movie Format |
| File extension QTP | Apple QuickTime Preferences Format |
| File extension QTR | Apple QuickTime Extension Resource Format |
| File extension QTS | QuickTime System |
| File extension QTV | QuickTime Virtual Reality |
| File extension QTVR | QuickTime VR |
| File extension QTX | Quicken Data Format |
| File extension QTXS | Apple QuickTime |
| File extension QTZ | QuaSZ Texture Format |
| File extension QU2 | GPS2WorldWind Database |
| File extension QUA | Avira AntiVir Format |
| File extension QUAD | QUAD Compressed Archive |
| File extension QUALSOFTCODE | Speedy Browser Code Archive |
| File extension QUD | QuarkXpress Auxiliary Dictionary |
| File extension QUE | CuteFTP Queue |
| File extension QUESTTEMPLATE | Starbound Quest Template |
| File extension QUI | Orgadata LogiKal |
| File extension QUICKBOOKSAUTODATARECOVERY | QuickBooks Auto Recovery |
| File extension QUICKENBACKUP | Quicken Essentials For Mac Financial Data Backup Format |
| File extension QUICKENDATA | Quicken Essentials For Mac Financial Data Format |
| File extension QUICKTIMECOMPONENTS | Mac OS X System |
| File extension QUIZ | Quizmaker 09 To 13 Quiz Format |
| File extension QUIZTEMPLATE | Articulate Studio Quizmaker |
| File extension QUO | ESignal Qoute |
| File extension QUOX | Quobject Format |
| File extension QUP | QuickTime Update Package |
| File extension QUT | IBM Voice Type Languages Vocable |
| File extension QVD | Quaanta Interactive Media Desktop Format |
| File extension QVM | Quake Format |
| File extension QVO | QlikView Table |
| File extension QVP | ViewletBuilder Project Format |
| File extension QVPP | QlikView Extension Properties Page Format |
| File extension QVT | Quantum Streaming Video Stream Url Format |
| File extension QVW | QlikView Document Format |
| File extension QV~ | ViewletBuilder Project Backup Format |
| File extension QW5 | Quicken Win Version 5 |
| File extension QWB | Microsoft Money Quotes WriteBack Import |
| File extension QWD | QuakeWorld Demo Format |
| File extension QWP | Quiptics Puzzle Format |
| File extension QWQ | OpenQwaq Auto-Launch Format |
| File extension QWT | QuarkXpress Web Document Template |
| File extension QX | Quexal Source Code |
| File extension QXB | QuarkXpress Multiple Document Publication Book File Format |
| File extension QXD | QuarkXPress Document Format |
| File extension QXF | Quicken Essentials For Mac Financial Data Exchange Format |
| File extension QXL | QuarkXPress Element Library Format |
| File extension QXML | Question Master Administration Tool Output |
| File extension QXP | QuarkXpress Project Format |
| File extension QXT | QuarkXPress Template Format |
| File extension QZ | Create A Quiz Data |
| File extension QZE | QZip Encrypted |
| File extension QZS | QuizPro Data |
File extensions in alphabetical order: Q
The list of file extensions, sorted alphabetically, beginning with the letter Q