List Of All Extensions And Filetypes - Q

This is an easy approach from me to give and describe each and every filetype and extension as much as possible.
here is the list for the information about various filetypes and extensions starting from alphabet S

Extension	Information
Q	Win95 Fax Queue
Q	Quantum Compressed Archive (Cinematronics)
Q	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
Q0	Q0 Graphic
Q00	Quicken 2000 File (Intuit Inc.)
Q01	Quicken 2001 File (Intuit Inc.)
Q03	QuickTax Year 2003 Return (Intuit Canada)
Q04	QuickTax Year 2004 Return (Intuit Canada)
Q1	Winamp Equalizer Settings (Nullsoft)
Q1A	QuickClean Restore Point (Network Associates Technology, Inc.)
Q1Q	LunarCell Plug-in File
Q1Q	LunarCell Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software)
Q2	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
Q2Q	Flexify Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software)
Q3D	Quickdraw 3D File
Q3D	Quest3D Interactive 3D File (Act-3D B.V.)
Q3O	Quick3D Model
Q3X	QuickTime QuickDraw 3D Extension (Apple Inc.)
Q4Q	Solar Cell Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software)
Q4W	Qualitek-4 Data File (Nutek, Inc.)
Q5Q	SuperBladePro Preset
Q5R	Melancholytron Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software)
Q7Q	India Ink Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software)
Q8R	Flood Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software)
Q98	Quicken 98 File (Intuit Inc.)
Q99	Quicken 99 File (Intuit Inc.)
Q9Q	BladePro Graphic Plug-in File
Q9R	Glitterato Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software)
Q9S	Mr. Contrast Photoshop/Paint Shop Pro Plug-In (Flaming Pear Software)
QAA	WinQSB Data Input File (John Wiley & Sons, Inc.)
QAB	QABUTIL File
QAB	SYBYL Binary Field Files
QAD	PF QuickArt Document
QAD	WordPerfect PerfectFit QuickArt NameSpace .WPG Thumbnail (Corel Corporation)
QAG	Norton Desktop Quick Access Group
QAP	Omnis Quartz Application File
QAT	Office Quick Access Toolbar Info (Microsoft Corporation)
QAX	ExpressTracker Data File
QB	Tony Hawk's Pro Skater Script (Neversoft Entertainment)
QB	MicroCase QBank (Cengage Learning)
QB	Q-Builder Study Cards File (Q-Builder Technology, Inc.)
QB1	Quicken (Intuit Inc.)
QBA	QuickBooks Accountant's Copy File (Intuit, Inc.)
QBB	QuickBooks Backup File (Intuit, Inc.)
QBC	qDos Batch File (Q-Base Team)
QBD	Keyboard Layout
QBD	Win3 Quicken File
QBE	Quattro Pro Saved Query
QBE	dBASE IV Saved Query
QBE	Example Query
QBF	QuickBASIC Font File
QBI	QuickBooks Crash Roll Back File (Intuit, Inc.)
QBL	Business Lawyer Document
QBM	QuickBooks Portable Company File (Intuit Inc.)
QBO	dBASE IV Ordered Query
QBS	Quick Basic Program File (Microsoft Corporation)
QBW	Quicken (Intuit Inc.)
QBW	QuickBooks Primary Data File (Intuit, Inc.)
QBX	QuickBooks Accountant Transfer File (Intuit Inc.)
QC	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QC	Steam Source SDK Model Source File (Valve Corporation)
QC	Progress Results Configuration (Progress Software Corporation)
QC	Quake-C Source Code File (id Software)
QCB	Combat Flight Simulator Quick Combat Editor File (Microsoft Corporation)
QCB	QConBridge
QCC	QUCM Firmware Upgrade
QCC	QC-CALC File
QCD	QuarkCopyDesk SE
QCD	Cliq Accessories Phonebook Data
QCE	QuickCrypto Encrypted File (Cybernescence)
QCF	QuickLogic Constraint File
QCF	Miliki Super Compressor Pro QuikCAT Compressed File (QuikCAT Technologies)
QCF	QuickBASIC Coordinates File
QCF	Q-emuLator
QCH	SSI Dark Queen of Krynn File
QCH	Quicken DOS ver 2 Data File (Intuit Inc.)
QCI	Massively Parallel Quantum Chemistry Program File
QCI	Cliq Accessories Phonebook Index
QCK	QuickCard File
QCK	Jigsaw 2 Astrological Tool File
QCK	Quick Charts File
QCK	Quick Foram Count File
QCK	VAX CRYSTALS Chemical Crystallogaphy File
QCM	3164 Emulator Quick Command File
QCM	QUCM Application File
QCP	PureVoice File (Qualcomm)
QCS	CADQC Standard File
QCT	Memory-Map File
QD	SHARP MZ-series Emulator File
QD0	Omnis Quartz Data File Segment 10
QD1	Omnis Quartz Data File Segment 10
QD2	Omnis Quartz Data File Segment 2
QD3	Omnis Quartz Data File Segment 3
QD3	QuickDraw 3D Metafile
QD3D	QuickDraw 3D Metafile
QD4	Omnis Quartz Data File Segment 4
QD5	Omnis Quartz Data File Segment 5
QD6	Omnis Quartz Data File Segment 6
QD7	Omnis Quartz Data File Segment 7
QD8	Omnis Quartz Data File Segment 8
QD9	Omnis Quartz Data File Segment 9
QDA	KaleidaGraph Data File (Synergy Software)
QDA	Quadruple D Archive
QDAT	QuickTime Installer Cache (Apple Inc.)
QDAUX	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QDB	Quicken Data File Backup (Intuit Inc.)
QDB	CUEcards (Marcus Humann)
QDC	Quick Devis Data (Quotalys Ltd)
QDE	qDos Executable (Q-Base Team)
QDF	Snapform Form Document (Ringler Informatik AG)
QDF	Label Matrix Bar Code Label (Teklynx Software Solutions)
QDF	Quicken Windows Data File (Intuit Inc.)
QDI	Dictionary
QDI	Quicken Data File (Intuit Inc.)
QDK	Quarterdeck QEMM File
QDP	KaleidaGraph Plot File (Synergy Software)
QDP	MPQDraft Plug-in
QDT	QuickBooks UK Accountancy Data File (Intuit, Inc.)
QDT	Quicken Data File (Intuit Inc.)
QDT	Question Mark Desigener Test File
QDT	QuarkXpress Dictionary File (Quark, Inc.)
QDV	Random Dot Software QDV Graphic
QDV	Steve Blackstock Giffer Graphics File
QE4	Kingpin Project File
QEF	Excel Query (Microsoft Corporation)
QEL	Quicken Electronic Library File (Intuit Inc.)
QEM	Expensable Report
QEP	IRMA Wordstation for Windows
QES	EpiData Questionnaire File (EpiData Association)
QEX	ExpensAble Data File
QF	Query Filter
QF	FORTRAN Embedded QUEL
QF	Qompose HTML Template (Wade Bowmer)
QF	Dispatch Qantas Itinerary Manager Timetable Export File (Scott Andrew Borton)
QFC	QuickFileCollection Archive
QFD	Quicken (Intuit Inc.)
QFG	Quicken (Intuit Inc.)
QFI	Quicken 2002 File (Intuit Inc.)
QFI	QuickTime Image (Apple Inc.)
QFL	Family Lawyer Document
QFN	QuickTime Font File (Apple Inc.)
QFS	Need for Speed Compressed Image (Electronic Arts, Inc.)
QFX	Quicken Transfer File (Intuit Inc.)
QFX	Quick Link/Quick Link II Fax
QHD	ViewChoice (Payroll Associates, LLC)
QHF	QIP Infium Instant Messenger History File (QIP Designers)
QIC	Windows Backup Backup Set (Microsoft Corporation)
QID	Quicken (Intuit Inc.)
QIF	Quicken Interchange Format (Intuit Inc.)
QIF	DESQview Compressed Font Archive (Symantec Corporation)
QIF	QuickTime Image (Apple Inc.)
QIN	Quinnsoft MP3 Player Data File (Quinnsoft)
QIP	DESQview Compressed Program Archive (Symantec Corporation)
QIX	Quicken DOS ver 2 Data File (Intuit Inc.)
QIZ	Quizzical Test
QIZ	Minimouse's Quiz File
QKT	Works (Microsoft Corporation)
QL	Progress Results Configuration (Progress Software Corporation)
QL$	MS Compressed QLB
QLB	C and QuickBasic-DOS and Visual Basic Quick Library (Microsoft Corporation)
QLC	PostScript Help File
QLC	Type Manager ATM Type 1 Font Script (Adobe Systems Incorporated)
QLE	QOOLE
QLF	Family Tree Maker Genealogy File
QLGENERATOR	OS X 10.5 Quick Look Generator File (Apple Inc.)
QLI	Statler Stitcher (Gammill, Inc.)
QLP	QuickLink Printer Driver
QM	Qt Message File (Qt Software)
QM	Quality Motion Streaming Video File (KDDI R&D Labs. Inc.)
QM2	Dragon Raja Character File (E-Sofnet Products, Inc.)
QM4	QMail Mail Door Option or Services File
QMA	Qedit File
QMD	Quicken Windows ver 5, 6 Data File (Intuit Inc.)
QME	Win3 Quicken Windows File
QMF	Lotus Approach Database Query
QML	Quicken DOS ver 2 Data File (Intuit Inc.)
QMO	ChemetriQ Inspection System Stored Qcept Metrology Objects (Qcept Technologies Inc.)
QMP	SeeYou Raster Maps (Naviter)
QMR	OzWin CompuServe E-mail/Forum Access Quickscan History
QMT	Quicken Memory List (Intuit Inc.)
QMX	Quantum Streaming Video Stream Control File (Move Networks, Inc.)
QN2	QuickNote File
QNA	High ASCII Quake Name Maker
QNC	Cliq Accessories Notepad Customization
QND	Cliq Accessories Notepad Data
QNE	Organize Quick and Easy (Individual Software Inc.)
QNI	Cliq Accessories Notepad Index
QNM	High ASCII Quake Name Maker
QNT	Chromeleon Quantification Method
QNX	Quicken Index (Intuit Inc.)
QOS	Notes Full Text Index (IBM)
QP03	qpress qpress Compressed Archive
QPB	Quicken Payroll File (Intuit Inc.)
QPC	KaleidaGraph Plot File (Synergy Software)
QPD	QP Software Dynamic Plug-in
QPD	Win3 Quicken Windows File
QPD	Qualified Plan Distribution and Tax Analysis System (QPDS) (DATAIR Employee Benefit Systems, Inc.)
QPF	Quartus II Project File (Altera Corporation)
QPH	Quicken Price History File (Intuit Inc.)
QPI	Win3 Quicken File
QPL	KaleidaGraph Layout File (Synergy Software)
QPP	QPresenter & Qpresenter Pro Presentation File (Digital Image LLP)
QPR	Foxpro Relational Query (Microsoft Corporation)
QPR	OS/2 Printer Queue Driver
QPR	Dinkum Embedded C++ Abridged Library
QPS	QP Software Application File
QPW	Quattro Pro Project File (Corel Corporation)
QPX	QuickTime Player Plug-in (Apple Inc.)
QPX	Foxpro Ordered Query (Microsoft Corporation)
QQT	Quick Qard Technology Qardware Definition File
QR2	Delphi Database Quick Report File (Borland Software Corporation)
QRC	Qt Resource Collection File (Qt Software)
QRD	BI/Query Query Result
QRF	Questions-Réponses Quiz File (Thomas and Mathieu DUABELE)
QRF	QR Designer Form File (PJ Applications)
QRM	Qworum Message (Armangil Software)
QRP	Dosh Software File
QRP	Gupta Report Builder File
QRP	QuickReport Report (QuSoft)
QRP	DR Hardware File
QRP	COW2000 Report (Software Exception)
QRP	Liberty for Windows Report File
QRS	WordPerfect Equation Editor (Corel Corporation)
QRS	SlickRun MagicWord Pack (Bayden Systems)
QRT	QRT Ray Tracing Graphic
QRT	QR Designer Form Project File (PJ Applications)
QRT	QuickRoute
QRY	Query
QRY	Query (Microsoft Corporation)
QRY	Lotus Approach Query for SQL Tables
QRY	dBASE IV Query
QRY	BI/Query Query
QS9	OzWin CompuServe E-mail/Forum Access Scan Result File
QSA	Encrypted QSA Specifications Database Export File
QSC	KaleidaGraph Script File (Synergy Software)
QSC	Pxyl Visuals Chart
QSD	Quicken Windows Data File (Intuit Inc.)
QSF	Quintessential Player Family Skin (Quinnware)
QSF	Millennium 3 Quick Start File
QSF	Micrografx QuickSilver Compressed Internet Live Graphic
QSG	Quest Saved Game (Axe Software)
QSK	Quintessential Player Skin (Quinnware)
QSL	OzWin CompuServe E-mail/Forum Access Forum Quickscan List
QSL	Questionnaire Specification Language File
QSM	QuadriSpace Model Format File
QSN	TAPCIS QuickScan Data
QSPLUGIN	Quicksilver Plug-in (Blacktree, Inc.)
QSS	Quantum Streaming Video Stream Segment (Move Networks, Inc.)
QST	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QST	Ami Pro QuickStart Tutorial Image (IBM)
QST	Zelda Classic Quest (Armageddon Games)
QST	Quake Spy Tab File
QST	KaleidaGraph Style File (Synergy Software)
QSV	Jigs@w Saved Puzzle State (Tibo Software)
QSXL	QuickLayout Session Data (Advanced Publishing Systems Pty Ltd)
QT	QuickTime Movie (Apple Inc.)
QT1	ViewChoice (Payroll Associates, LLC)
QT2	ViewChoice (Payroll Associates, LLC)
QTA	qtar Archive
QTC	Incite Media Assistant File
QTC	QuickTime Ver 2.0+ Windows CODEC (Apple Inc.)
QTCH	Quicktime Cached File (Apple Inc.)
QTE	Questionnaire Specification Language File
QTF	Qtracker Filter
QTI	QuickTime Image (Apple Inc.)
QTIF	QuickTime Image (Apple Inc.)
QTK	Apple Quicktake (Apple Inc.)
QTL	QuickTime Media Link (Apple Inc.)
QTL	YUV SECAM or PAL image
QTM	QuickTime Movie (Apple Inc.)
QTMP	Qtracker Mapshot Pack
QTN	Norman Virus Control Quarantine File (Norman)
QTP	QuickTime Preferences (Apple Inc.)
QTP	Astra Quicktest Report
QTPF	QuickTime PreFlight Text (Apple Inc.)
QTPP	Qtracker Program Package
QTR	QuickTime Resource File (Apple Inc.)
QTS	Macintosh PICT Image
QTS	QuickTime System File (Apple Inc.)
QTSCPT	Quicktime Script File (Apple Inc.)
QTSK	Qtracker Skin
QTV	QuickTime Virtual Reality Movie (Apple Inc.)
QTVR	QuickTime VR (Apple Inc.)
QTW	QText File
QTX	Quicken Data File (Intuit Inc.)
QTX	QuickTime Ver 3/4 Windows CODEC (Apple Inc.)
QTX	Qtext Text File
QTZ	QuaSZ Texture File (Mystic Fractal)
QTZ	Quartz Composer Data (Apple Inc.)
QUAD	QUAD Compressed Archive (Ilia Muraviev)
QUALIFY	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUALITY	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUB	Qubus (KPMG)
QUE	CuteFTP Queue File (GlobalSCAPE)
QUE	Interviewer Voxco Questionnaire (Voxco Inc.)
QUE	SurveySolutions Questionnaire (Perseus Development Corporation)
QUE	PDP-10 Print Queue, Submit Queue, Plot Queue
QUE	Sphinx Questionnaire (Le Sphinx Développement)
QUE	Task Scheduler Queue Object
QUENTIN	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUERY	PCHealth Query (Microsoft Corporation)
QUEST	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUEST1	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUEST2	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUI	Brain Quiz File
QUICKDRAW	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUICKEN	Quicken Spreadsheet (Intuit Inc.)
QUIT	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUITFX	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUOTE	Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
QUP	QuickTime Update Package (Apple Inc.)
QUT	IBM Voice Type Language Vocabels File
QVD	Quaanta Media Desktop (GalaxyBeing.com)
QVM	Quake File
QVP	ViewletBuilder Project File (Qarbon, Inc.)
QVT	Quantum Streaming Video Stream URL (Move Networks, Inc.)
QVW	QlikView Document (QlikTech International AB.)
QW	Symantec Q&A Write Program File (Symantec Corporation)
QW5	Quicken 5 File (Intuit Inc.)
QW6	Quicken 6 File (Intuit Inc.)
QWB	Money Quotes WriteBack Import File (Microsoft Corporation)
QWK	QWK Reader Message
QWP	Quiptics Puzzle File
QX	Quexal Source Code (Stefano Tommesani)
QXB	QuarkXpress Books File (Quark, Inc.)
QXD	QuarkXpress Document (Quark, Inc.)
QXL	QuarkXpress Element Library (Quark, Inc.)
QXM	Quexal Macro (Stefano Tommesani)
QXP	QuickCreateXP Course Customiser (SanScrip)
QXP	QuarkXpress Project (Quark, Inc.)
QXT	QuarkXpress Template File (Quark, Inc.)
QZ	Create A Quiz Exam File (PC Shareware, Inc.)
QZB	Quizzical Test
QZB	QuaSZ Zbuffer File (Mystic Fractal)
QZD	QuizPro Quiz Data (Luzius Schneider)
QZE	QuizPro Quiz Data (Luzius Schneider)
QZM	QuizMaster File
QZS	QuizPro Quiz Data (Luzius Schneider)