Alphabetically: Q
Extension File Description File Type
.q07
QuickTax 2007 Tax Return
Data
.q08
QuickTax 2008 Tax Return
Data
.q09
QuickTax 2009 Tax Return
Data
.q1q
LunarCell Photoshop Plug-in
Plugin
.q2d
Quick 3D Cover Design File
Settings
.q2q
Flexify Photoshop Plug-in
Plugin
.q3c
Quick 3D Cover Project File
Layout
.q3d
Quest3D Project File
Data
.q4q
Solar Cell Photoshop Plug-in
Plugin
.q5r
Melancholytron Photoshop Plug-in
Plugin
.q7q
India Ink Photoshop Plug-in
Plugin
.q8r
Flood Photoshop Plug-in
Plugin
.q9r
Glitterato Photoshop Plug-In
Plugin
.q9s
Mr. Contrast Photoshop Plug-In
Plugin
.qb2005
QuickBooks 2005 File
Data
.qb2006
QuickBooks 2006 File
Data
.qb2007
QuickBooks 2007 File
Data
.qb2009
QuickBooks 2009 File
Data
.qb2010
QuickBooks 2010 File
Data
.qbb
QuickBooks Backup File
Backup
.qbk
QuickTax Backup File
Backup
.qbm
QuickBooks Portable Company File
Backup
.qbmb
QuickBooks Backup File
Backup
.qbmd
QuickBooks Backup File
Backup
.qbo
QuickBooks Online Bank Statement File
Web
.qbw
QuickBooks Data File
Data
.qbx
QuickBooks Accountant Transfer File
Backup
.qcp
PureVoice Audio File
Audio
.qda
Quadruple D Archive
Compressed
.qdat
QuickTime Install Cache File
Data
.qdf
Quicken Data File
Data
.qdfm
Quicken Data File (Macintosh)
Data
.qdl
QDL Program
Text
.qdp
Quick and Dandy Plotter File
Data
.qds
Windows Directory Query File
Misc
.qel
Quicken Electronic Library
Data
.qf
Qompose Web Page Template
Web
.qfx
Quicken Financial Exchange File
Data
.qic
Windows Backup File
Backup
.qif
Quicken Interchange Format File
Data
.qit
QIT Trojan Horse File
Executable
.qlgenerator
Quick Look Generator File
Plugin
.qm
Qt Compiled Translation Source File
Data
.qpb
Quicken Payroll File
Data
.qpf
Quartus II Project File
Data
.qph
Quicken Price History File
Data
.qpm
Quick Pallet Maker Input Data
Data
.qpr
FoxPro Generated Query Program
Developer
.qpt
QuarkXPress Project Template
Layout
.qpw
Quattro Pro Spreadsheet
Spreadsheet
.qpx
QuickTime Player Extension
Plugin
.qrc
Qt Resource Collection File
Settings
.qrm
Qworum Message File
Web
.qrp
QuSoft QuickReports File
Data
.qsd
Quicken Data File
Data
.qsf
Qualtrics Survey File
Backup
.qss
Qt Style Sheet
Settings
.qt
Apple QuickTime Movie
Video
.qtch
QuickTime Cache File
Video
.qti
QuickTime Image File
Raster Image
.qtif
QuickTime Image File
Raster Image
.qtl
QuickTime Link File
Video
.qtm
Apple QuickTime Movie File
Video
.qtp
QuickTime Preferences File
Settings
.qtr
QuickTime Extension Resource
Plugin
.qtx
QuickTime Extension
Plugin
.qtz
Quartz Composer File
Video
.qvm
Quake 3 Virtual Machine File
Game
.qwd
QuakeWorld Demo File
Game
.qx
Quexal Source Code
Developer
.qxb
QuarkXPress Book File
Layout
.qxd
QuarkXPress Document
Layout
.qxl
QuarkXPress Library
Misc
.qxp
QuarkXPress Project File
Layout
.qxt
QuarkXPress Template
Layout