File extension	The full name of the file	Popularity
File extension 1ST	Readme File
File extension ABW	AbiWord Document
File extension AC	AC3D geometry file
File extension ACT	FoxPro Documenting Wizard Action Diagram
File extension AIM	AIMMS ASCII Model File
File extension ANS	ANSI Text File
File extension APT	Almost Plain Text File
File extension ASC	ASCII text file
File extension ASCII	ASCII Text File
File extension ASE	Autodesk ASCII Scene Export File
File extension ATY	Association Type Placeholder
File extension AWP	Ability Write Template
File extension AWT	AbiWord Template
File extension AWW	Ability Write Document
File extension BAD	Exchange Badmail File
File extension BBS	Bulletin Board System Text
File extension BDP	Exchange Diagnostic Message
File extension BDR	Exchange Non-Delivery Report Body File
File extension BEAN	Bean Rich Text Document
File extension BIB	BibTeX Bibliography Database
File extension BLI	Thomson Speedtouch Firmware File
File extension BNA	Atlas Boundary file
File extension BOC	EasyWord Big Document
File extension BRX	Beam Report Document
File extension BTD	Business-in-a-Box Document
File extension BZABW	Compressed AbiWord Document
File extension CHARSET	Character Set
File extension CHART	Feedback Chart File
File extension CHORD	Song Chords File
File extension CLG	QIP list of ignored contacts file
File extension CNM	NoteMap outline file
File extension COD	Atlantis Word Processor Encrypted Document
File extension CRWL	Windows Crawl File
File extension CWS	Claris Works Template
File extension CYI	Clustify Input File
File extension DCA	DisplayWrite Document
File extension DGS	Dagesh Pro Document
File extension DIZ	Description in Zip File
File extension DNE	Netica Text File
File extension DOC	Microsoft Word Document
File extension DOC#	Microsoft Word Document
File extension DOCM	Word Open XML Macro-Enabled Document
File extension DOCX	Microsoft Word Open XML Document
File extension DOCXML	Microsoft Word XML Document
File extension DOCZ	ThinkFree Online Note Document
File extension DOTM	Word Open XML Macro-Enabled Document Template
File extension DOTX	Word Open XML Document Template
File extension DOX	MultiMate Document
File extension DPF	F-Secure default policy file
File extension DSC	Text Description File
File extension DSV	DeSmuME Save File
File extension DVI	Device Independent Format File
File extension DX	DEC WPS Plus File
File extension EML	E-Mail Message
File extension EMLX	Mail Message
File extension EMULECOLLECTION	eMule Data File
File extension ENG	English language localization file
File extension EPP	EditPad Pro Project
File extension ERR	Error Log File
File extension ESD	ExpertScan survey document file
File extension ETF	ENIGMA Transportable File
File extension ETX	Setext Structure Enhanced text file
File extension EUC	Extended Unix Code File
File extension FAQ	Frequently Asked Questions Document
File extension FBL	CADfix Command Level Log File
File extension FCF	Final Draft Converter File
File extension FDF	Acrobat Forms Data Format
File extension FDR	Final Draft Document
File extension FDS	Final Draft Secure Copy
File extension FDT	Final Draft 5-7 Template
File extension FDX	Final Draft Document
File extension FDXT	Final Draft 8 Template
File extension FFT	Final Form Text File
File extension FLR	Netscape Live3D file
File extension FODT	OpenDocument Flat XML Document
File extension FPT	FoxPro Table Memo
File extension FRG	dBASE IV uncompiled report file
File extension FRT	FoxPro Report Memo
File extension FWDN	fWriter Document
File extension GDOC	Google Drive Document
File extension GPD	Generic Printer Description File
File extension GPN	GlidePlan Map Document
File extension GSD	General Station Description File
File extension GTHR	Gather Log File
File extension GV	Graphviz DOT File
File extension HBK	Mathcad Handbook File
File extension HHT	Help and Support Center HHT File
File extension HS	Java HelpSet File
File extension HVC	ASCII file
File extension HWP	Hanword Document
File extension HZ	Chinese (Hanzi) Text
File extension IDX	Outlook Express Mailbox Index File
File extension IIL	CleanSweep Installation Log
File extension IPF	OS/2 Help File
File extension IPSPOT	iPhoto Spot File
File extension JARVIS	Jarvis Subscriber File
File extension JIS	Japanese Industry Standard Text
File extension JOE	JOE Document
File extension JP1	Japanese (Romaji) Text File
File extension JRTF	JAmes OS Rich Text File
File extension KES	Kurzweil 3000 Document
File extension KLG	Log File
File extension KNT	KeyNote Note File
File extension KON	Yahoo! Widget XML File
File extension KWD	KWord Document
File extension LATEX	LaTeX Document
File extension LBT	FoxPro Label Memo
File extension LINX	Bridge Base file
File extension LIS	SQR Output File
File extension LNT	Laego Note Taker File
File extension LOG	Log File
File extension LP2	iLEAP Word Processing Document
File extension LST	Data List
File extension LTR	Letter File
File extension LTX	LaTeX Document
File extension LUE	Norton LiveUpdate Log File
File extension LUF	Lipikar Uniform Format File
File extension LWP	Lotus Word Pro Document
File extension LXFML	LEGO Digital Designer XML File
File extension LYT	TurboTax Install Log File
File extension LYX	LyX Document
File extension MAN	Unix Manual
File extension MBOX	E-mail Mailbox File
File extension MCW	Microsoft Word 5 for Mac document file
File extension MD5TXT	Message Digest 5 Hash File
File extension ME	Readme Text File
File extension MELL	Mellel Word Processing File
File extension MELLEL	Mellel Word Processing Document
File extension MIN	Mint Source File
File extension MMO	RapidFile memo document file
File extension MNT	FoxPro Menu Memo
File extension MSG	Outlook Mail Message
File extension MSW	Microsoft Word 5 Document file
File extension MTX	Microsoft Visual Studio manual test text file
File extension MW	MacWrite Text Document
File extension MWD	MarinerWrite Document
File extension MWP	Lotus Word Pro SmartMaster File
File extension NDOC	Naver Word
File extension NFO	Warez Information File
File extension NJX	NJStar Document
File extension NOTE	Notability for iPad note file
File extension NOTES	Memento Notes File
File extension NOW	Readme File
File extension NWCTXT	NoteWorthy Composer Text File
File extension OCR	FAXGrapper Fax Text File
File extension ODIF	Open Document Interchange Format
File extension ODM	OpenDocument Master Document
File extension ODO	Online Operating System Write Document
File extension ODT	OpenDocument Text Document
File extension OFL	Ots File List
File extension OPD	Durango Interferometry Software document file
File extension OPENBSD	OpenBSD Readme File
File extension ORT	COREX orthographic transcriptions file
File extension OTT	OpenDocument Document Template
File extension P7S	Digitally Signed Email Message
File extension PAGES	Pages Document
File extension PAGES-TEF	Pages iCloud Document
File extension PDG	SSreader document file
File extension PFS	PhotoFiltre Studio Saved Selection File
File extension PFX	First Choice Word Processing Document
File extension PJT	FoxPro Project Memo
File extension PLG	Microsoft Developer Studio build log file
File extension PML	PADGen program information file
File extension PMO	Pegasus Saved Message File
File extension PRT	Printer Output File
File extension PSW	Pocket Word Document
File extension PVJ	ProofVision Job Ticket
File extension PVM	Photo Video Manifest File
File extension PWD	Pocket Word Document
File extension PWDP	Password Pad Document
File extension PWDPL	Password Pad Lite Document
File extension PWI	Pocket Word Document
File extension QDL	QDL Program
File extension QPF	QuickPad Encrypted Document
File extension QVD	Quaanta Interactive Media Desktop file
File extension QVT	Quantum Streaming video stream url file
File extension RAD	Radar ViewPoint Radar Data
File extension README	Readme File
File extension REP	BusinessObjects report file
File extension RFT	Revisable Form Text Document
File extension RIS	Research Information Systems Citation File
File extension RPT	Generic Report
File extension RST	reStructuredText File
File extension RTD	RagTime Document
File extension RTF	Rich Text Format File
File extension RTFD	Rich Text Format Directory File
File extension RTX	Rich Text Document
File extension RUN	Runscanner Scan File
File extension RZK	File Crypt Password File
File extension RZN	Red Zion Notes File
File extension S01	Corel WordPerfect distribution file
File extension S02	Corel WordPerfect distribution file
File extension SAF	SafeText File
File extension SAFETEXT	SafeText File
File extension SAM	Ami Pro Document
File extension SAMI	Synchronized Accessible Media Interchange file format
File extension SAVE	Nano Temporary Save File
File extension SCC	Scenarist Closed Caption File
File extension SCM	Schema File
File extension SCRIV	Scrivener Document
File extension SCRIVX	Scrivener XML Document
File extension SCT	FoxPro Form Memo
File extension SCW	Movie Magic Screenwriter Document
File extension SDM	StarOffice Mail Message
File extension SDOC	Satra Khmer Document
File extension SDW	StarOffice Writer Text Document
File extension SESSION	Mozilla Firefox Session File
File extension SGM	SGML File
File extension SIG	Signature File
File extension SKCARD	Starfish Sidekick Card File
File extension SLA	Scribus Document
File extension SLAGZ	Scribus Compressed Document
File extension SMF	StarMath Formula File
File extension SMS	Exported SMS Text Message
File extension SSA	Sub Station Alpha Subtitle File
File extension STORY	Storyist Document
File extension STRINGS	Text Strings File
File extension STW	StarOffice Document Template
File extension STY	LaTeX Style
File extension SUB	Subtitle File
File extension SUBLIME-PROJECT	Sublime Text Project File
File extension SUBLIME-WORKSPACE	Sublime Text Workspace File
File extension SXG	Apache OpenOffice Master Document
File extension SXW	StarOffice Writer Document
File extension TAB	Guitar Tablature File
File extension TDF	Xserve Test Definition File
File extension TEMPLATE	Apple Pages Template
File extension TEX	LaTeX Source Document
File extension TEXT	Plain Text File
File extension TEXTCLIPPING	Mac OS X Text Clipping File
File extension THP	TurboTax text string file
File extension TLB	VAX Text Library
File extension TM	TeXmacs Document
File extension TMD	TextMaker Document
File extension TMV	TextMaker Template
File extension TPC	Topic Connection Placeholder
File extension TSC	Microsoft Windows WinHelp related file
File extension TVJ	TrueView Job Ticket
File extension TXA	Clarion exported to text format file
File extension TXT	Plain Text File
File extension U3I	U3 Application Information File
File extension UNAUTH	SiteMinder Unauthorized Message File
File extension UNX	Unix Text File
File extension UOF	Uniform Office Document
File extension UOT	Uniform Office Document
File extension UPD	Program Update Information
File extension UTF8	Unicode UTF8-Encoded Text Document
File extension UTXT	Unicode Text File
File extension VCT	Visual Class Library Memo
File extension VNT	Mobile Phone vNote File
File extension VW	Volkswriter Text File
File extension WBK	WordPerfect Workbook
File extension WEBDOC	Box.net Web Document
File extension WN	WriteNow Text Document
File extension WP	WordPerfect Document
File extension WP4	WordPerfect 4 Document
File extension WP5	WordPerfect 5 Document
File extension WP6	WordPerfect 6 Document
File extension WP7	WordPerfect 7 Document
File extension WPA	ACT! Word Processing Document
File extension WPD	WordPerfect Document
File extension WPL	DEC WPS Plus Text Document
File extension WPS	Microsoft Works Word Processor Document
File extension WPT	WordPerfect Template
File extension WPW	Corel WordPerfect document file
File extension WRI	Windows Write Document
File extension WSD	WordStar Document
File extension WTX	Text Document
File extension XBDOC	Xiosis Scribe Document
File extension XBPLATE	Xiosis Scribe Template
File extension XDL	XML Schema File
File extension XWP	XMLwriter Project
File extension XY	XYWrite Document
File extension XY3	XYWrite III Document
File extension XYP	XYWrite Plus Document
File extension XYW	XYWrite for Windows Document
File extension ZABW	Compressed AbiWord Document File
File extension ZW	Chinese Text File