File extension	The full name of the file	Popularity
File extension Q07	QuickTax 2007 Tax Return
File extension Q08	QuickTax 2008 Tax Return
File extension Q09	QuickTax 2009 Tax Return
File extension Q1	Winamp Equalizer Presets File
File extension Q1Q	LunarCell Photoshop Plug-in
File extension Q2	Winamp Equalizer Auto-Load Presets File
File extension Q2D	Quick 3D Cover Design File
File extension Q2Q	Flexify Photoshop Plug-in
File extension Q3C	Quick 3D Cover Project File
File extension Q3D	Quest3D Project File
File extension Q4Q	Solar Cell Photoshop Plug-in
File extension Q5R	Melancholytron Photoshop Plug-in
File extension Q7Q	India Ink Photoshop Plug-in
File extension Q8R	Flood Photoshop Plug-in
File extension Q9R	Glitterato Photoshop Plug-In
File extension Q9S	Mr. Contrast Photoshop Plug-In
File extension QAR	QlikView Extension
File extension QB2005	QuickBooks 2005 File
File extension QB2006	QuickBooks 2006 File
File extension QB2007	QuickBooks 2007 File
File extension QB2009	QuickBooks 2009 File
File extension QB2010	QuickBooks 2010 File
File extension QB2011	QuickBooks 2011 File
File extension QB2012	QuickBooks 2012 File
File extension QBB	QuickBooks Backup File
File extension QBK	QuickTax Backup File
File extension QBM	QuickBooks Portable Company File
File extension QBMB	QuickBooks Backup File
File extension QBMD	QuickBooks Backup File
File extension QBO	QuickBooks Online Bank Statement File
File extension QBW	QuickBooks Data File
File extension QBX	QuickBooks Accountant Transfer File
File extension QC	Half-Life Model Compiler Script
File extension QCP	PureVoice Audio File
File extension QDA	Quadruple D Archive
File extension QDAT	QuickTime Install Cache File
File extension QDB	Quicken 5 & 6 Data File
File extension QDF	Quicken Data File
File extension QDF-BACKUP	Quicken Data Backup File
File extension QDFM	Quicken Data File (Macintosh)
File extension QDFX	Quicken Financial Exchange File
File extension QDL	QDL Program
File extension QDP	Quick and Dandy Plotter File
File extension QDS	Windows Directory Query File
File extension QDT	QuarkXpress auxiliary dictionary file
File extension QEL	Quicken Electronic Library
File extension QF	Qompose Web Page Template
File extension QFX	Quicken Financial Exchange File
File extension QIC	Windows Backup File
File extension QIF	Quicken Interchange Format File
File extension QIT	QIT Trojan Horse File
File extension QKY	Quirky Kernel
File extension QLGENERATOR	Quick Look Generator File
File extension QM	Qt Compiled Translation Source File
File extension QMG	Samsung Theme Graphics File
File extension QMK	YanCEyDesktop Quickmarks File
File extension QPB	QuickBooks Point of Sale Data File
File extension QPF	Quartus II Project File
File extension QPH	Quicken Price History File
File extension QPM	Quick Pallet Maker Input Data
File extension QPR	FoxPro Generated Query Program
File extension QPT	QuarkXPress Project Template
File extension QPW	Quattro Pro Spreadsheet
File extension QPX	FoxPro Compiled Query Program
File extension QRC	Qt Resource Collection File
File extension QRM	Qworum Message File
File extension QRP	QuickReport File
File extension QRY	Query File
File extension QSD	Quicken Data File
File extension QSF	Qualtrics Survey File
File extension QSS	Qt Style Sheet
File extension QT	Apple QuickTime Movie
File extension QTCH	QuickTime Cache File
File extension QTI	QuickTime Image File
File extension QTIF	QuickTime Image File
File extension QTINDEX	Adobe QTIndex File
File extension QTL	QuickTime Link File
File extension QTM	Apple QuickTime Movie File
File extension QTP	QuickTime Preferences File
File extension QTR	QuickTime Extension Resource
File extension QTX	QuickTime Extension
File extension QTZ	Quartz Composer File
File extension QUA	Avira AntiVir Quarantined File
File extension QUICKENBACKUP	Quicken Essentials for Mac Backup File
File extension QUICKENDATA	Quicken Essentials for Mac Data File
File extension QUIZ	Quobject Quiz Package
File extension QUOX	Question Object File Format
File extension QVD	Quaanta Interactive Media Desktop file
File extension QVM	Quake 3 Virtual Machine File
File extension QVP	ViewletBuilder Project File
File extension QVPP	QlikView Extension Properties Page File
File extension QVT	Quantum Streaming video stream url file
File extension QVW	QlikView Document
File extension QV~	ViewletBuilder Project Backup File
File extension QWD	QuakeWorld Demo File
File extension QWQ	OpenQwaq Auto-Launch File
File extension QX	Quexal Source Code
File extension QXB	QuarkXPress Book File
File extension QXD	QuarkXPress Document
File extension QXF	Quicken Essentials for Mac Exchange File
File extension QXL	QuarkXPress Library
File extension QXP	QuarkXPress Project File
File extension QXT	QuarkXPress Template