File extension	The full name of the file	Popularity
File extension !BT	BitTorrent Incomplete Download File
File extension !QB	qBittorrent Partial Download File
File extension !UT	uTorrent Incomplete Download
File extension 1	Unix Section 1 Man Page
File extension 323	H.323 Internet Telephony File
File extension 3DC	RacerMate 3D Course File
File extension 83P	TI-83 Calculator File
File extension 8XP	TI-83 Plus Calculator File
File extension AAWDEF	Ad-Aware Definitions File
File extension ABR	Adobe Photoshop Brushes File
File extension AC$	AutoCAD Temporary File
File extension ACB	AOL Cab Launcher
File extension ACC	Quicken 2002 internet common file
File extension ACL	AutoCorrect List File
File extension ACS	Agent Character File
File extension AD	After Dark Screensaver
File extension ADADOWNLOAD	Adobe Download Assistant Partial Download File
File extension ADD	Dynamics AX Developer Documentation File
File extension ADI	Dynamics AX Developer Documentation Index File
File extension ADM	Portfolio Admin-Level Access Flag
File extension AEPKEY	Advanced Encryption Package Key File
File extension AFPLOC	Apple Filing Protocol Location
File extension AGD	Agile Advantage E-mail Attachment
File extension AHD	Microsoft Dynamics AX On-line help data file
File extension AHI	Microsoft Dynamics AX online help index file
File extension AIF	Symbian Application Information File
File extension AIM	AOL Instant Messenger Launch File
File extension ALT	Dynamics AX Temporary File
File extension ANNOT	Adobe Digital Editions Annotations File
File extension AOD	Microsoft Dynamics AX object data file
File extension AOI	Dynamics AX Application Object Index File
File extension AOL	America On-line related file
File extension APF	Adobe Profile File
File extension APPDOWNLOAD	Mac App Store Partially Downloaded App
File extension APPUP	Erlang Application Upgrade File
File extension ARR	Advanced RAR Password Recovery Project
File extension ASH	Nintendo Wii System Menu File
File extension ASS	Aegisub Advanced Substation Alpha File
File extension ATZ	Atomic Time Zone File
File extension AUZ	Ableton Authorization File
File extension AVASTLIC	Avast! License File
File extension AVGDX	AVG Diagnostics File
File extension AWC	Emulex AWC Firmware Update File
File extension AWD	Award BIOS Update File
File extension AWKW	Awkwords Word Generator File
File extension AZ!	Vuze Partial Download File
File extension B	IBM Lotus applause batch list file
File extension BBL	TeX/BibTeX bibliographic reference file
File extension BC	BitComet Partially Downloaded File
File extension BC!	BitComet Incomplete File
File extension BDR	Publisher Borders File
File extension BFC	Windows Briefcase File
File extension BKMK	Yummy FTP Bookmark File
File extension BMC	Embroidery Image File
File extension BMK	Nokia Device Bookmark File
File extension BOOTSKIN	Stardock Bootskin File
File extension BOX	Microsoft Store Download File
File extension BP2	AutoCAD Batch Plot File
File extension BP3	AutoCAD Batch Plot File
File extension BPDX	Acrobat Batch PDX File
File extension BPL	AutoCAD Batch Plot File
File extension BPS	BPS Virus File
File extension BQY	Brio Query File
File extension BRW	PointCentral Financial institutions loan file
File extension BST	BibTeX Style Document
File extension BT!	BitSpirit Incomplete Download File
File extension BUF	Buffer File
File extension BUP	McAfee Quarantined File
File extension C2U	Texas Instruments CBL 2 OS File
File extension CA	Initial Telnet Cache
File extension CACHE	Cache File
File extension CALB	Coolect Album File
File extension CALIBRE	Calibre Device Data File
File extension CAS	Autodesk AutoCAD license file
File extension CBDS	Comic Book DS File
File extension CBT	Computer Based Training File
File extension CCS	TrialDirector clip script file
File extension CDF-MS	ClickOnce Compiled Manifest File
File extension CDZ	ROM With a View project file
File extension CFL	IMVU Product File
File extension CFS	Lucene Compound Index File
File extension CHK	ScanDisk file fragment
File extension CHUNK001	File Splitter Split Archive Part 1
File extension CHW	Compiled Help Index File
File extension CI	CitectSCADA file
File extension CL	Cursor Library
File extension CLB	Super NoteTab ClipBook template file
File extension CLKK	Clicker Keyboard
File extension CLKT	Clicker Template
File extension CLKW	Clicker Word Bank
File extension CLKX	Clicker Grid Set
File extension CLR	Flash Color Set
File extension CLS	LaTeX Document Class File
File extension CML	CryptoMailer Encrypted File
File extension CMM	Corel Multimedia Manager Album
File extension CON	Corel WordPerfect concordance file
File extension CONTOUR	Contour Screenplay File
File extension COS2	Pinnacle Studio Cache File
File extension CP3	Grand Prix 3 Cockpit Shape File
File extension CPT	Pocket Slides Presentation
File extension CRASHED	AbiWord Crash-Saved Document
File extension CRC	Total Commander Checksum File
File extension CRD	Windows CardSpace File
File extension CRDOWNLOAD	Chrome Partially Downloaded File
File extension CSH	Photoshop Custom Shapes File
File extension CTF	AVG Update Control File
File extension CTG	BMC Software PATROL file
File extension CUL	Windows Cursor Library
File extension CVF	CPU-Z Validation File
File extension CVR	Microsoft Crash Report File
File extension CXF	Picasa Collage File
File extension DA2	Ad-Aware License File
File extension DAP	Download Accelerator Plus Partial Download
File extension DAT	Exchange E-mail Attachment
File extension DB	Windows Thumbnail Cache
File extension DBX	Outlook Express E-mail Folder
File extension DC1	Bloomba E-mail Message
File extension DC2	Kodak DC25 Digital Camera file
File extension DCOVER	Disc Cover File
File extension DCT	Dictionary File
File extension DCTMP	DC++ Partially Downloaded File
File extension DDD	Adobe Distiller file
File extension DECRYPT	Decrypted Microsoft ESD File
File extension DEK	Memorize-It Flashcard Deck
File extension DESKTOP	Desktop Entry File
File extension DEVICESALT	NOOK Device Salt File
File extension DFU	LaTeX Font Encoding File
File extension DGC	TurboTax Tax Form
File extension DIC	Dictionary File
File extension DISABLED	Spybot - Search & Destroy Disabled File
File extension DISKDEFINES	Linux LiveCD Information File
File extension DKE	DriveLock FDE Disk Key File
File extension DLM	Akamai Download Manager File
File extension DMX-INFO	DriverMax Driver Information File
File extension DOWNLOADING	Pando Incomplete Download File
File extension DPB	FaxMaster Document
File extension DR	DRM Rights Object
File extension DRC	DRM Rights Object
File extension DSC	Nikon Disk Identification File
File extension DSKIN	DockX Skin
File extension DSTUDIO	DownloadStudio Incomplete Download
File extension DTAPART	DownThemAll! Partially Downloaded File
File extension DT_	Macintosh Data Fork
File extension DUMP	Google BreakPad Crash Log File
File extension DUS	Readiris Font Dictionary
File extension DWC	Emulex DWC Firmware Update File
File extension DWL	TurboCAD Drawing Lock File
File extension DWLIBRARY	Paperless Document Library
File extension EBN	Philips Firmware Update File
File extension EDC	Kryptel Lite Encrypted File
File extension EDN	Acrobat Document file
File extension EEK	Arachne Network-Enabled Script
File extension EEP	Evidence Eliminator file
File extension EF2	Internet Download Manager Export File
File extension EFL	External Format Language File
File extension EMAIL	Outlook Express Email Message
File extension EMD	Micrografx Media Manager file
File extension ENC	Encore Musical Notation File
File extension ENF	EndNote Filter File
File extension ENML	Evernote for Android Note
File extension ERF	Epson camera RAW file
File extension ERL	GameGuard Error Log File
File extension ERR	AutoCAD Error Log File
File extension EVENT	Corel Cataloged Folder File
File extension EXD	Control Information Cache File
File extension EXT	Generic Email Attachment
File extension EYB	Microsoft Encarta Yearbook Update File
File extension EZLOG	Skype Extras Manager Log File
File extension EZT	Worm.Win32.AutoRun.ezt file
File extension EZW	easyOFFER Real Estate Form File
File extension FB!	FlashGet Incomplete Download File
File extension FCE	EDraw Max file format
File extension FDR	Windows Error Report File
File extension FEEDBACK	Expression SketchFlow Feedback File
File extension FFD	FlashFiler file
File extension FFL	Fetion Emoticons Package
File extension FFT	Find Fast Indexer file
File extension FFX	Find Fast Indexer index file
File extension FILE	Generic Windows File
File extension FL3	Flash 3D File
File extension FLF	Microsoft Dynamics NAV License File
File extension FMELIC	FME License File
File extension FND	Windows Saved Search
File extension FNLF	Novation Automap license file
File extension FPFV	File Protected From Virus
File extension FPK	JetForm FormFlow File
File extension FRK	Macintosh Resource or Data Fork
File extension FRM	Form File
File extension FRZ	Locked FormFlow File
File extension FT	Lotus Notes full test index
File extension FTIL	e-Hastakshar Contract Note
File extension FTPLOC	FTP Location
File extension FW	Firmware Update File
File extension G3A	Casio Prizm Add-in File
File extension GAU	Flight Simulator Gauge File
File extension GG	Google Desktop Gadget File
File extension GLINK	Google Drive External File Shortcut
File extension GLY	Word Glossary File
File extension GOD	God Configuration File
File extension GP4	Guitar Pro 4 Tablature
File extension GPG	GNU Privacy Guard Public Keyring
File extension GROWLREGDICT	Growl Temp File
File extension GTA	Microsoft Groove Tool Archive
File extension H1Q	Microsoft Help Merged Query Index File
File extension HDK	HotDocs Registration File
File extension HDX	Delphi MultiHelp Index File
File extension HEX	Hexadecimal Source File
File extension HLB	VMS / VAX Help Library
File extension HLX	ATI Radeon Video Driver Support File
File extension HMX	Help & Manual 4 Project
File extension HPS	HP Digital Sender Metadata File
File extension HS	Motorola Flash Flex File
File extension HXA	Microsoft Help 2 Attribute Definition File
File extension HXC	Microsoft Help 2 Collection Definition File
File extension HXE	Microsoft Help 2 Sample Definition File
File extension HXK	Microsoft Help 2 Index File
File extension HXT	Microsoft Help 2 Table of Contents File
File extension HYP	Dictionary Information File
File extension ICAL	iCalendar File
File extension ICALENDAR	iCalendar File
File extension ICMA	InCopy Assignment File
File extension ICONTAINER	CandyBar iContainer File
File extension ICS	iCalendar File
File extension ID	Lotus Notes User ID File
File extension IDLK	Adobe InDesign Lock File
File extension IDX	Index file
File extension IFL	3ds Max Image File List
File extension IIX	Translation Memory Index File
File extension IMAPMBOX	IMAP Mailbox
File extension IML	ACT! Internet Mail Message
File extension IMY	iMelody Ringtone File
File extension IN	Spyware File
File extension INCA	InCopy CS3 Assignment File
File extension INDK	Adobe InDesign Shortcut Set File
File extension INETLOC	Internet Location
File extension INFO	Generic Information File
File extension ING	MasterCook Ingredients File
File extension INLK	Adobe InDesign Lock File
File extension INM	FaxMaster Document
File extension IOBIT	Advanced SystemCare Rollback File
File extension IPK	Shana Informed Filler file
File extension IPSW	iPod and iPhone Software Update File
File extension ISN	Installer Source Files
File extension ITC	iTunes Cover Flow Data File
File extension IVA	Dementia.4207 Virus File
File extension IWS	Trojan-Downloader.JS.Agent file
File extension JAD	Java Application Descriptor File
File extension JC	FlashGet Partial Download
File extension JC!	FlashGet Incomplete Download
File extension JRS	Exchange Reserve Transaction Log File
File extension JSF	Adobe Fireworks batch script
File extension KEY	Licence or encrypted security file
File extension KHD	Dynamics AX Kernel Help Data File
File extension KHI	Dynamics AX Kernel Help Index File
File extension KMR	KnowledgeMill Link File
File extension KWM	WebMoney Key File
File extension KYR	Lotus Domino Key Ring File
File extension LAY	DVD Studio Pro Layout File
File extension LCK	Program Lock File
File extension LDB	Microsoft Access Lock File
File extension LEGAL	DaveTech Legal Document
File extension LETTER	Undeliverable Mail File
File extension LIC	Software License File
File extension LICENSEKEY	iPartition License Key File
File extension LINK	iPod Link File
File extension LOCK	Lock File
File extension LOGONVISTA	LogonStudio Windows Vista Logon Screen
File extension LOGONXP	LogonStudio Windows XP Logon Screen
File extension LOOV	Smadav Virus Definitions File
File extension LRC	Lyrics File
File extension LRS	Check Point License Request File
File extension LTF	Frogans Shortcut File
File extension LWTP	LimeWire Theme Pack
File extension LXA	Microsoft Speech Lexicon File
File extension LYR	ArcView Layer File
File extension M12	Akregator file
File extension MAB	Mozilla Address Book
File extension MAD	Access Module Shortcut
File extension MAF	Microsoft Access form shortcut file
File extension MAG	Access Diagram Shortcut File
File extension MAILPLANELICENSE	Mailplane License File
File extension MAILTOLOC	Mail Internet Location File
File extension MANIFEST	Steam Manifest File
File extension MAP	TECkit Mapping File
File extension MAR	Mozilla Archive
File extension MAU	Media Attachment Unit
File extension MB	ManaBook file
File extension MBB	Kodak EasyShare Data File
File extension MBS	Opera Mailbox File
File extension MC2	MasterCook 5 Cookbook File
File extension MCFI	Maya Initial Fluid Cache File
File extension MCFP	Maya Fluid Cache Playback File
File extension MCI	Media Control Interface File
File extension MCO	Live Messenger Winks File
File extension MD0	Adobe Photoshop Metadata Cache File
File extension MD5	MD5 Checksum File
File extension MDC	Image Minolta RD175
File extension MDF	Translation Memory Data Find File
File extension MDW	Access Workgroup File
File extension ME	Temporary Delete Me File
File extension MERLINLICENSE	Merlin License File
File extension MFIL	Blizzard Software Update File
File extension MFU	Backdoor.Win32.Agent.mfu virus file
File extension MGDATABASE	MacGourmet Deluxe Database File
File extension MGM	MGCSoft Equation Editor Macro file format
File extension MGO	MacGourmet Recipe File
File extension MIF	Management Information Format
File extension MJDOC	MacJournal Document
File extension MLS	CrystalPlayer Playlist
File extension MNL	AutoCAD Menu LISP File
File extension MNX	FoxPro Menu
File extension MONTAGE	Montage Screenplay File
File extension MPCPL	Media Player Classic Playlist
File extension MRK	DPOF Auto Print Order File
File extension MS-TNEF	MS Transport Neutral Encapsulation Format
File extension MSF	Mail Summary File
File extension MSI	Windows Installer Package
File extension MSO	Inline E-mail Attachment
File extension MSRCINCIDENT	Windows Remote Assistance Invitation File
File extension MSU	Windows Vista Update Package
File extension MTA	Samsung AllShare Metadata File
File extension MTD	Musicnotes Digital Sheet Music File
File extension MTF	MasterCook Tips
File extension MVI	AutoCAD Movie Command File
File extension MWF	Translation Memory Word Find File
File extension MWLIC	MoneyWell License File
File extension MXM	MixMeister BPM calculation file
File extension MXN	Miinoto Exchangeable Note File
File extension MZZ	Microsoft .NET Download Package
File extension NA2	Netscape Address Book File
File extension NAV	MSN Application Extension File
File extension NAV2	WinAVI Temporary Navigation File
File extension NCH	Outlook Express Folder File
File extension NCW	Nero CoverDesigner Wizard File
File extension ND5	Renamed NDS File
File extension NDL	Lotus Notes Doclink File
File extension NFS	Network File System Temporary File
File extension NGD	NimbleGen gene description file
File extension NICK	Outlook 2000 Nickname File
File extension NJB	Nikon Photo Index File
File extension NK2	Outlook 2002 Nickname File
File extension NOMEDIA	Android No Media File
File extension NSS	Magentic Screensaver File
File extension NTF	MediaFACE II CD Label File
File extension NTH	Nokia Series 40 Theme File
File extension NUP	Smart Security Update File
File extension NVI	NVIDIA Driver File
File extension NWM	Sony NWM Display Screen File
File extension OB!	Orbit Downloader Incomplete Download
File extension OCR	Subtitle Workshop OCR Script
File extension ODF	OpenDocument Formula
File extension ODS	Outlook Express 5 Mailbox
File extension OFR	SMS Offer Manager File
File extension OLB	OLE Object Library
File extension OOK	Arachne Batch Script
File extension OPDOWNLOAD	Opera Partially Downloaded File
File extension OPF	FlipAlbum File
File extension OST	Outlook Offline Folder File
File extension OTC	OpenDocument Chart Template
File extension OTF	OpenDocument Formula Template
File extension OWG	OutWit Gear Database
File extension OWM	OutWit XML Mashup File
File extension P10	Certificate Request File
File extension P2P	FolderShare Placeholder File
File extension P7M	Digitally Encrypted Message
File extension P7R	Certificate Request Response File
File extension PAD	ACT! Database Pointer File
File extension PAKM	PAKM Package File
File extension PAMP	Poweramp Album Art File
File extension PANDO	Pando File
File extension PAP	Corel Painter Paper Texture
File extension PART	Partially Downloaded File
File extension PARTIAL	Internet Explorer Partially Downloaded File
File extension PES	Brother Embroidery Format
File extension PGP	PGP Security Key
File extension PID	Process ID File
File extension PKPASS	Passbook Pass File
File extension PLA	iriver iQuickList File
File extension PLAYSET	Souptoys Playset File
File extension PLSK	Messenger Plus! Live Skin Pack
File extension PN	Powernoodle File
File extension POS	IBM Lotus Notes file
File extension PPF	Paint Shop Pro Soft Plastic Preset File
File extension PPK	PuTTY Private Key File
File extension PPM_B	Nokia PPM Flash File
File extension PRS	PlayStation Radio Player Location
File extension PSAR	PSP Update File
File extension PSF	HP-UX Product Specification File
File extension PSI	PrimalScript Online Help Shortcut
File extension PSS	Picture and Sound Show File
File extension PSW	Windows Password Reset Disk File
File extension PT	Panther Project File
File extension PTH	4D Path Document
File extension PTR	OS/2 Cursor image file
File extension PVK	Private Key File
File extension PVM	HP Photo Album
File extension QDS	Windows Directory Query File
File extension QUA	Avira AntiVir Quarantined File
File extension QWQ	OpenQwaq Auto-Launch File
File extension QXL	QuarkXPress Library
File extension RADIUMKEY2	Radium 2 License File
File extension RASKINLICENSE	Raskin License File
File extension RAT	PICS Rating File
File extension REDIR	Spotify Executable Redirect File
File extension RELOC	Windows EXE Relocation Section File
File extension REM	BlackBerry Encrypted Data File
File extension REQ	SSL Certificate Request File
File extension RFB	RoboForm Bookmark File
File extension RFC	RoboForm Contact File
File extension RFL	ANSYS file
File extension RFN	RoboForm Safenote File
File extension RFP	RoboForm Passcard File
File extension RFT	RoboForm Identity File
File extension RHP	Encore file format file
File extension RJS	RealJukebox Skin File
File extension RMF	Adobe Rights Management Document
File extension RML	Elixir Report Template File
File extension RND	Random Hash Data File
File extension ROM	Read Only Memory Image
File extension ROV	Report Object Variable
File extension RPMSG	Outlook Restricted Permission Message
File extension RSA	RSA Certificate File
File extension RSM	ReliaSoft MPC 3 file
File extension RSP	Linker response file
File extension RTE	OziExplorer route file
File extension RTM	LabVIEW Run-Time Menu File
File extension RTP	TurboTax Update File
File extension RWLIBRARY	Paperless Receipt Library
File extension RWZ	Outlook Rules Wizard File
File extension RXC	Roxio Certificate File
File extension SBC	Office Accounting Company Shortcut File
File extension SBK	Creative Labs EMU SoundFont v1 bank file
File extension SBS	Spybot Search and Destroy Includes file
File extension SC	Space Engine Script
File extension SC2LOCALE	Blizzard StarCraft 2 Localization File
File extension SCI	Virtumonde / Vundo Trojan infected file
File extension SCW	Score Writer Document
File extension SCZ	Wingz script file
File extension SDN	Smart Diary Suite ingredients file
File extension SDR	Dell Support File
File extension SEARCH-MS	Windows Saved Search File
File extension SEC	PGP Secret Key Ring
File extension SECURE	Septium Secure Document
File extension SEW	Janome Sewing Machine stitch file
File extension SF	Minecraft JAR Signature File
File extension SFT	Microsoft App-V Sequencer File
File extension SFV	Simple File Verification File
File extension SGP	STATGRAPHICS plus statistics file
File extension SHA1	SHA-1 Hash File
File extension SHA256	FileVerifier++ SHA-256 Hashes File
File extension SHA512	SHA 512 Hash File
File extension SHORTCUT	Asutype Shortcut
File extension SHS	Microsoft Scrap File
File extension SHV	Husqvarna Viking Embroidery File
File extension SHX	Motorola Flash Superfile
File extension SIDB	iTunes Authorization Data File
File extension SIDD	iTunes Authorization Data File
File extension SIDX	SharpMap spatial index file
File extension SIM	Intel VTune performance monitor file
File extension SIS	Symbian Installation File
File extension SISDM	Ovi Store DRM-Protected Application
File extension SISX	Symbian OS Installation File
File extension SISXDM	Nokia Ovi Store DRM-Protected Application
File extension SK	Safari History Index File
File extension SKINDEX	Mail Index File
File extension SKR	PGP Private Keyring
File extension SLB	PSpice symbols library file
File extension SLF	Symantec License File
File extension SLS	Image Playlist
File extension SLUPKG-MS	XrML Digital License Package
File extension SMRD	Adobe InDesign Filter File
File extension SMWT	Adobe InDesign Filter
File extension SNA	ZX80 Spectrum Mirage emulator snapshot file
File extension SNAPSHOT	ZX Spectrum emulator Mirage Microdrive snapshot file
File extension SNM	Netscape Mail Index
File extension SNT	Sticky Notes File
File extension SP	SPICE data file
File extension SPD	Form·Z Suspended Render File
File extension SPH	Ribbons sphere file
File extension SPK	Synology Package
File extension SR0	SecuROM Analysis File
File extension SSC	Stellarium Script
File extension SSD	WindowBlinds Skin File List
File extension SSLF	HLSW Shared Server List File
File extension SST	Serialized Certificate Store File
File extension SSW	Sealed flash file
File extension STD	CD/DVD Label Template
File extension STH	Lotus Domino Stash File
File extension STMB	Synclavier Timbre File
File extension STORYMILL	StoryMill Project File
File extension SUM	Garmin Checksum File
File extension SVN-WORK	Subversion Cache File
File extension SW2	SPICE Sweep Operations output file
File extension SWJ	SolidWorks Journal File
File extension SWP	Vi Swap File
File extension SXM	StarMath Formula
File extension T$M	AVG Internet Security Temporary File
File extension TAG	DataFlex Query Tag
File extension TBS	TuneUp Utilities Boot Screen
File extension TCR	TouchMagix Creative Suite Published File
File extension TCZ	PSTextMerge script file
File extension TEC	TECkit Compiled Mapping File
File extension TEMP	Temporary (Temp) File
File extension TFIL	Blizzard Software Update File
File extension THM	Sony Ericsson Theme File
File extension TIP	TuneUp Utilities Icon Package
File extension TKO	Win32/Oficla Trojan File
File extension TLA	TuneUp Utilities Startup Logo
File extension TLB	OLE Type Library
File extension TLS	TuneUp Utilities Logon Screen
File extension TMB	Timbuktu Pro Connection Document
File extension TNEF	Transport Neutral Encapsulation Format
File extension TNSP	TI-Nspire PublishView Document
File extension TOC	Eudora Table of Contents
File extension TOP	Evernote handwritten notes and sketches file
File extension TORRENT	BitTorrent File
File extension TPL	Document Template
File extension TPM	Transformation Parameters Model File
File extension TRACE	VMware ThinApp Trace Log File
File extension TSF	ProWORX Nxt symbol file
File extension TSM	Turbo Assembler for OS/2 manual file format
File extension TSTREAM	SwarmPlayer Streaming Torrent
File extension TTX	Trados TagEditor File
File extension TVL	TurboTax File
File extension UDS	NetBackup UNIX Domain Socket File
File extension ULS	NetMeeting User Location Service File
File extension UNK	UVProbe file
File extension UNKNOWN	Unknown File Type
File extension UNL	Garmin Unlock File
File extension UPG	Firmware upgrade file
File extension URR	Uniface Signatures File
File extension VBT	Spyware Doctor Temporary Scan File
File extension VDI	StepMania Debug Resource File
File extension VDJSEND	VirtualDJ Send File
File extension VER	Version Record
File extension VIR	Virus-Infected File
File extension VLCL	VMware Localization File
File extension VMDK-CONVERTTMP	VMWare Fusion Temporary File
File extension VMF_AUTOSAVE	Valve Hammer Editor Autosave File
File extension VMG	Nokia Text Message
File extension VMHF	VMware Hot Fix File
File extension VMHR	VMware Hot Fix Request File
File extension VMSG	VMware Application Message File
File extension VNCLOC	Screen Sharing VNC Internet Location
File extension VOL	Volfs File System Directory
File extension VPA	VPchat Chat Gestures File
File extension VPC6	Virtual Machine Package
File extension VPC7	Virtual Machine Package
File extension VS	Vivid Include File
File extension W	Google Toolbar Search History File
File extension WAL	Winamp Modern Skin
File extension WBA	WindowBlinds Compressed Skin
File extension WCM	Microsoft Works Communications Script
File extension WDSEML	Thunderbird Searchable Email File
File extension WGS	Walk-Graph Segment File
File extension WJE	WinJournal Entry
File extension WJF	WinJournal Journal File
File extension WORDLIST	Desktop Poet Word List File
File extension WSZ	Winamp Classic Skin
File extension WTC	Logitech Webcam File
File extension WUL	WinUHA Language File
File extension WWD	Works Wizard File
File extension WZMUL	WinZip Registration File
File extension XENSEARCH	XenCenter Saved Search File
File extension XFS	Gunbound file
File extension XLNK	XML Shortcut File
File extension XLW	Excel Workspace File
File extension XMP	Extensible Metadata Platform File
File extension XNK	Exchange Shortcut
File extension XOL	PowerDesigner Object Language File
File extension XPR	PressIt Disc Label
File extension XSLIC	XenServer License File
File extension XWF	OmniPage Workflow File
File extension XXX	Compucon Singer Embroidery File
File extension YBD	YobiDrive Link File
File extension YBK	Microsoft Encarta Yearbook File
File extension YMG	Yahoo! Messenger File
File extension YPS	Yahoo! Messenger Data File
File extension Z1	ZoneAlarm Renamed VB File
File extension ZLB	ZoneAlarm Mailsafe renamed HTA file
File extension ZM1	ZoneAlarm Mailsafe renamed MDA file
File extension ZM2	ZoneAlarm Mailsafe renamed MDZ file
File extension ZM3	ZoneAlarm Mailsafe renamed NCH file
File extension ZM9	ZoneAlarm MailSafe Renamed Zip File
File extension ZML	Zooming Markup Language File
File extension ZMV	ZoneAlarm Mailsafe renamed file
File extension ZNO	ZoneAlarm Mailsafe renamed file
File extension ZPF	ZoneAlarm Mailsafe renamed file
File extension ZTF	DVD Label Template File
File extension ZTR	DVD Label Template Media File
File extension ZVPL	Visual Paradigm License File
File extension ZZZ	CCleaner Securely Deleted File
File extension _EML	Windows Live Mail Email File
File extension _NWS	Windows Live Mail Newsgroup Copy File