Alphabetical list of filename extensions (S–Z)

This alphabetical list of filename extensions contains standard extensions associated with computer files.

Contents 

A–E

F–L

M–R

S

Ext. Description Used by
S$$
 Temporary sort file Sprint
S
 ASSEMBLY source code file unix
S
 Multi Edit macro file source Multi Edit
S
 MSTS Shape file MSTS
S19
 Motorola ASCII format of executables
S1K
 S1000 Simnet Format
S3I
 Digiplayer/ST3 Sample File Digiplayer - ST3
S3M
 Music (16 channels) Scream Tracker 3.0 - DMP
S7I
 Seed7 library / include file Seed7 interpreter and compiler
SA?
 Packed mail FTN software
SAB
 Saber file Star Wars: Jedi Knight Jedi Academy
SAF
 see SAIF
SAFE
 SafeIT Encrypted
SAIF
 Spatial Archive Interchange Format
SAL
 Datafile SORITEC
SAN
 LucasArts' SMUSH/INSANE animation
SAM
 Ami Pro data file Ami Pro
SAM
 Text file Samna - Lotus Ami/Ami Pro
SAP
 Atari SAP music format
SAR
 Archive SAR
SAT
 ACIS
SATS
 Static source ATS
SAV
 Backup file (saved file)
SAV
 Configuration
SAV
 Executable RT-11
SAV
 SPSS "System File" PSPP
SAV
 Saved game state Spider Solitaire (Windows)
SAVER
 Screensaver Mac OS X
SB
 Audio file (signed byte)
SB
 Raw Signed Byte (8bit) data AWAVE
SB
 Raw Signed PCM Byte 8bit data AWAVE
SB
 Scratch project Scratch
SBD
 Storyboard Storyboard Editor
SBH
 Header ScriptBasic
SBI
 Sound Blaster Instrument file (Creative Labs)
SBK
 Emu SoundFont Bank (AWE32 Bank) Convert (c) Villena
SBL
 Stony Brook Pascal library SB Pascal
SBP
 DML program Superbase 4
SBR
 Support file Source Browser
SBT
 Notes related to record Suberbase 4 Windows
SC
 Display driver Framework II
SC
 PAL script Paradox
SC
 Script Borland Paradox
SC3
 Renamed dBASE III screen mask file dBASE IV
SC3
 Screen device driver Harvard Graphics 3.0
SC3
 Saved City SimCity 3000
SC4
 Saved City SimCity 4
SC4
 Game Scenario RollerCoaster Tycoon Deluxe/Expansion Pack
SC6
 Game Scenario RollerCoaster Tycoon 2
SCA
 Datafile SCA
SCC
 Text file
SCD
 SCODOL film recorder (Scan Conversion Object Description Language) SCODOL
SCF
 Standard Chromatogram Format DNA Baser Assembler
SCF
 Standard Chromatogram Format Staden package
SCF
 ? SimAnt or SimTown ??
SCF
 Windows Explorer Command (e.g.: show desktop.scf) Windows Explorer
SCF
 Multimedia show ScoreMaker
SCF
 Spelling checker configuration file Symphony
SCH
 Project schedule Schedule Publisher
SCH
 Circuit Design Schematic P-CAD - Orcad - Protel
SchDoc
 Circuit Design Schematic Protel - Altium Designer
SCHEMATIC
 MCEdit Schematic file MCEdit Tool for Minecraft
SCI
 Fax SciFax
SCI
 System Configuration Information
SCM
 Scheme source code file
SCM
 Schematic file (Circuit Diagram for PCB design) Zuken CadStar
SCM
 StarCraft mission
SCN
 SCeNe RTrace
SCN
 Screen file Kermit
SCO
 High score
SCP
 Script BITCOM
SCR
 Any other screen system
SCR
 DEBUG source code file DOS Debug
SCR
 Forth screen (source) file Forth
SCR
 Screen - screen snapshot dBASE IV - Procomm Plus
SCR
 Screen font LocoScript
SCR
 Screen saver Windows 3.x
SCR
 Screen snapshop
SCR
 Script file source TeleMate - Kermit - 1st Reader
SCT
 Additional (FPT) screen description file FoxPro
SCTOR
 Raster graphics format used by some very obscure custom operating systems
SCX
 Chart Stanford Chart
SCX
 Graphics format ColoRIX
SCX
 Main (DBF) screen description file FoxPro
SCX
 StarCraft: Brood War scenario StarCraft: Brood War
SCY
 Security file ReaGeniX
SD
 Sound Designer I audio file AWAVE
SD7
 Seed7 source file Seed7 interpreter and compiler
SDA
 Fidonet's Software Distribution Network file archive description
SDC
 Video DigimaxMaster - Samsung NV3
SDC
 Synopsys Design Constraints Electronic Design Automation Tools
SDF
 Microsoft SQL Server Compact Edition database file
SDF
 Flight data microdrones GmbH
SDF
 Source definition file Sourcer
SDF
 System Data Format file (fixed length ASCII text)
SDI
 Software Distribution Network Info file
SDK
 Roland S-550/S-50/W-30 Disk Image
SDL
 Alias Wavefront Scene Description Language
SDM
 Signed Differential Mapping brain maps and/or distributions Signed Differential Mapping
SDML
 Spacial Data Modeling Language
SDN
 Software Distribution Network compressed file archive pak251.exe
SDR
 SmartDraw File SmartDraw Pro
SDS
 MIDI Sample DUMP Standard File
SDS
 Self Defining Structure provides for N-dimensional very large datasets using HHCode geographic information systems and relational database management systems
SDTS
 Spatial Data Transfer Standard
SDW
 Ami Draw Symbol File
SDX
 Sample DUMP Exchange File
SEA
 Self-Extracting compressed Macintosh file Archive
SEC
 compressed file
SEC
 Diskreet encrypted file Diskreet
SEC
 Secret key ring file Pretty Good Privacy RSA System
SEC
 Secured animation file Disney Animation Studio
SED
 Self extraction directive file IExpress
SEN
 Scifer Archive Format (Internal Header Mode)
SEP
 Printer separator page
SEQ
 ABI Text Sequence Applied Biosystems
SEQ
 Atari animation file
SEQ
 Video Tiertex video sequence
SEQ
 Sequential Instruction File Bubble Chamber
SES
 Session info Clarion Modula-2
SES
 Multitrack Audio Session info Adobe Audition
SET
 Configuration file 1st Reader
SET
 Driver sets created by Install Symphony
SET
 Extension used by Norton Backup and CPS Backup for setup info Norton Backup - CPS Backup
SET
 Hump Assignments File FYM
SET
 Setup options file
SET
 YVD card set file YVD
SF
 IRCAM Sound File CSound package - MixView sound sample editor
SF
 JAR Digital Signature
SF
 WPS attribute storage (OS/2 WorkPlace Shell) wp_root.sf OS/2 WorkPlace Shell
SF2
 Emu SoundFont Bank v2.0 file AWAVE
SFB
 Configuration file emacs
SFB
 HP Soft font (obsolete under Windows)
SFD
 SoundStage Data file AWAVE
SFF
 Standard Flowgram Format DNA Baser SFF Workbench tool
SFF
 Scene File Format
SFI
 Graphics SIS Framegrabber
SFI
 Printer font (HP LaserJet landscape) Ventura Publisher
SFL
 PCL 4 bitmap font (landscape) landscape - Intellifont - Ventura Publisher
SFL
 Sound file Sound Forge and ACID Pro
SFN
 Font SPX
SFO
 Bitstream font file - fontware format
SFP
 PCL 4 bitmap font portrait - Intellifont - Ventura Publisher
SFR
 Sonic Foundry Sample Resource AWAVE
SFS
 PCL 5 scalable font file Intellifont
SFT
 Screen font ChiWriter
SFX
 Renamed dBASE III screen mask file dBASE IV
FX SFX (self-extracting archives) script RAR
SG1
 Graphics Stanford Graphics
SGF
 Document with graphics Starwriter
SGF
 Smart Game Format Many board games
SGI
 Graphics file IRIS - Silicon Graphics
SGP
 Statistics STATGRAPHICS Plus
SGT
 Save/get keyboard macro Signature
SH
 ASCII archive SHAR
SH
 Unix shell script Unix shell interpreter
SH3
 Presentation Harvard Graphics 3.0
SH3D
 Sweet home 3d file Sweet home 3d
SHA1
 SHA1 Checksum verification File HashCheck (Windows)
SHAR
 Archive UNSHAR (Unix)
SHB
 Background CorelShow
SHG
 Segmented Hyper Graphics Microsoft's shed.exe, JGsoft's Hotspot Builder, EC Software's Help and Manual
SHK
 Apple II archive SHRINKIT
SHM
 Shell macro WordPerfect Library
SHP
 Shape file and sdiv id="PYI"> PYIource file for text fonts

ESRI shapefile

 AutoCAD

ArcGIS

SHR
 see SHAR
SHT
 HTML format for WWW NetScape
SHW
 Presentation Harvard Graphics 2.0 - CorelShow
SHW
 Slide show WordPerfect Presentations, PMview Slide Show
SHX
 Shape entities

ESRI shapefile

 AutoCAD

ArcGIS

SIB
 Sibelius file Sibelius 1-5
SID
 Sound Interface Device file format SIDplayer, SIDplay, sidplay2 /w
SIF
 Setup Installation Files info Windows NT Setup
SIG
 Current program settings Signature
SIG
 Signature file ThunderByte AntiVirus - PopMail
SIK
 Backup file (Sicherungskopie) Microsoft Word
SIM
 Simon document file - Simon instruction software editor
SIS
 symbian file
SIT
 Archive (Macintosh) STUFFIT
SKI
 ? ?
SKP
 Google SketchUp file
SKY
 SYLK Spreadsheet file (used by Multiplan)
SL
 S-Lang source code file
SLB
 P-CAD library (symbols) P-CAD
SLB
 Slide library AutoCAD
SLC
 SALT (script from Telix) compiled code Telix
SLD
 Slide AutoCAD
SLDPRT
 Part SolidWorks
SLDASM
 Assembly SolidWorks
SLDDRW
 Drawing SolidWorks
SLI
 Slide MAGICorp Slide Service
SLK
 Microsoft Excel import format Microsoft Excel
SLK
 SYLK Symbolic Link format data file MultiPlan
SLL
 Sound data file
SLL
 Static Link Library PowerBASIC
SLN
 Microsoft Visual Studio Solution Microsoft Visual Studio
SLP
 SLP command file created by SRCCOM RT-11
SLP
 Localization project file Sisulizer
SLT
 SALT Script Application Language for Telix script source Telix
SLV
 Solution for any game many
SM
 Maillist SoftSpoken Mailer
SM
 Script ScriptMaker
SM
 SMALLTALK source code file
SM
 Text file Samna Word
SM
 StepMania Step File StepMania
SMC
 Super MagiCom SNES ROM image Super MagiCom
SMCLVL
 Secret Maryo Chronicles Level Secret Maryo Chronicles
SMF
 Fax SMARTFAX
SMF
 3D World Studio mesh files
SMK
 Smacker Video Format (RAD Video)
SML
 System Macro Library RT-11
SMM
 Ami Pro Macro File Ami Pro
SMN
 Font (ParaGraph's WorkScript format)
SMP
 Sample (sound file)
SMP
 Samplevision File Samplevision
SMPL
 Data Megahedron 3D object
SMS
 MSTS Sound management system file MSTS
SMT
 Text file Smart Ware II
SN
 Compressed song file Sound Club editor
SND
 Digitized sound file Macintosh/ATARI/PC
SND
 Power Chords drum sound file Power Chord
SNDB
 SQLNotes database SQLNotes
SNG
 Song (midi sound) Midisoft Studio - Prism
SNG
 Saved game file for StarCraft StarCraft
SNO
 SNOBOL4 source code file
SNP
 Book-shelf for .BOO READIBM
SNP
 Microsoft Access report snapshot
SNP
 Output video format from Computer Eyes equipment
SNX
 Saved game file for StarCraft: Brood War StarCraft: Brood War
SO
 shared object, dynamically linked library Unix, Linux
SOAR
 Soar Production file
SOF
 Altera FPGA programming file (internal RAM) Altera Quartus
SOL
 Solution e.g. game walkthroughs
SOL
 Adobe Flash shared object ("Flash cookie") (Movie, film, video and multimedia file type) Adobe Flash
SOM
 Network serial numbers Quattro Pro
SOM
 Sort information Paradox
SON
 Song SBStudio II
SOU
 Temporary BATCH file RT-11
SOU
 SBStudio II Sound File SBStudio II
SOU
 Sound data (sound tool)
SP
 Archive (unix) SPLINT
SPC
 Program Microsoft Multiplan
SPC
 Temporary file WordPerfect for Win
SPC
 SNES SPC-700 Sound File SNES games
Spectroscopic data (scientific) Thermo Scientific
SPD
 Scalable font Speedo - Harvard Graphics 3.0
SPF
 Slide presentation file EnerGraphics
SPF
 data SQR Portable Format
SPG
 Glossary Sprint
SPI
 Graphics (Siemens and Philips scanner)
SPIFF
 Still Picture Interchange File Format
SPIN
 Spin source file Parallax Propeller Microcontrollers
SPL
 Archive SPLINT
SPL
 Customized printer driver Sprint
SPL
 Divided file segment Slice
SPL
 Personal spell dictionary Signature
SPL
 Print spooling file Windows 3.x
SPL
 Sample
SPM
 Data wp{wp}.spm WordPerfect
SPP
 Printer file Sprint
SPR
 Document letter Sprint
SPR
 Generated executable screen file FoxPro
SPR
 Sprite
SPR
 Story Board sprites
SPS
 Exported SyncBack profile SyncBack
SPS
 Screen driver Sprint
SPS
 SPSSx source code file VAX/VMS
SPT
 Data support file (MITAC disk/system management utility pack) MITAC disk/system management utility pack
SPT
 SPITBOL source code file
SPW
 Worksheet SigmaPlot
SPX
 Compiled executable screen file FoxPro
SPX
 Ogg Speex bitstream[1] Xiph.Org Foundation
SQD
 Squish message base Squish
SQI
 Squish message base index Squish
SQL
 Structured Query Language Any SQL database
SQLite
 SQLite Firefox SQLiteBrowser
SQL
 Squish message base lastread pointers Squish
SQM
 Windows Live Messenger log file
SQN
 Note file SquareNote
SQZ
 Archive SQUEEZE
SQZ
 FOXPRO Squeeze file FOXPRO
SRC
 Source code Aurora Compiler
SRC
 Multi-edit source Multi-Edit
SRC
 Source DataFlex
SRF
 Sun Raster File graphics file
SRP
 Script QuickLink
SRT
 Subtitle format SubRip
SS
 Bitmap graphics Splash
SS
 Screen saver DN
SSC
 Celestia Solar System Catalog file Celestia
SSD
 Datafile SAS/PC
SSF
 Graphic file SnagIt Studio File/PC
SSG
 Saved game Simsig
SSIF
 Stereoscopic Interleaved file Media playback devices / software that supports Blu-ray 3D
SSP
 Datafile SAS Transport
SSR
 FLEXIT Singleshot Survey Raw Data file FLEXIT
SST
 AVHRR graphic file
SSV
 Spreadsheet viewer file
ST
 Instrument library Scream Tracker
ST
 SMALLTALK source code file Little Smalltalk
ST
 Stamp NeoPaint
STA
 Data file Statistica
STA
 Saved state Reflection 4.0
STA
 Stack Spinmaker Plus
STB
 Symbol table file RT-11
STB
 Stub library Genus GX Kernel
STC
 Celestia Star Catalog file Celestia
STC
 OpenOffice.org XML spreadsheet template OpenOffice.org Calc
STD
 State Transition Diagram graphic file Prosa
STD
 OpenOffice.org XML drawing template OpenOffice.org Draw
STEAMSTART
 STEAMSTART file Steam (software)
STF
 Archive SHRINKTOFIT
STF
 Setup Table File
STI
 OpenOffice.org XML presentation template OpenOffice.org Impress
STK
 eBook Starebook
STL
 Stereolithography Interface Format
STL
 Subtitle files EBU-standard
STM
 Music format (4 channels) (Scream Tracker Module) ST - DMP
STM
 State Transition Diagram model file Prosa
STO
 Pascal stub OBJ file Genus GX Kernel
STP
 Subtitler Project Belle Nuit Subtitler
STR
 Gate3 table structure file
STR
 Structure list object file dBASE Application Generator
STR
 PlayStation video file
STS
 Music format (Scream Tracker Song) ST 2.0-2.3
STS
 Project status info Microsoft C/C++
STU
 Studio Project Pinnacle Studio (video editing software)
STUFF
 EVE Online compressed file archive CCP hf
STW
 Data file SmartTerm for Windows
STW
 OpenOffice.org XML text document template OpenOffice.org Writer
STX
 Electronic book SmarText
STX
 Music format
STX
 Tax form CA-Simply Tax
STY
 Ami Pro Template (Style); used by other programs for `styles` Ami Pro
STY
 Style library or sheet many
SU
 Saurus source file
SU?
 Packed mail FTN software
SUB
 Subtitle format SubViewer; Author David Dolinski
SUC
 Saurus byte-code file Saurus VM
SUF
 Sony camera configuration file (setup.suf) XDCAM-EX camcorders
SUI
 SUIT library Simple User Interface Toolkit
SUM
 Summary
SUN
 Sun rasterfile graphics file Sun Microsystems
SUO
 Solution User Options Microsoft Visual Studio
SUP
 Subtitle file (Blu-ray encapsulated container) SupRip
SUP
 Supplementary dictionary WordPerfect for Win
SUR
 Surface topography (in native "SURF" format) MountainsMap
SV4
 Saved Game File RollerCoaster Tycoon
SV6
 Saved Game File RollerCoaster Tycoon 2
SVC
 Represents the ServiceHost instance hosted by Internet Information Services Windows Communication Foundation
SVD
 Autosave file for document Microsoft Word
SVG
 Autosave file for glossary Microsoft Word
SVG
 Scalable Vector Graphics many
SVQ
 MRC-Pro sequencers music format Roland Corporation synths such as XP or Fantom series
SVS
 Autosave file for style sheet Microsoft Word
SVW
 Super Video Windows Conversion Artist
SVX
 Interchange, 8SVX/16SV AWAVE
SVY
 FLEXIT Survey data FLEXIT
SW
 Raw Signed Word (16bit) data AWAVE
SWF
 Shockwave Flash Macromedia
SWG
 SWIG source code SWIG
SWG
 SWAG Pascal Snippets file SWAG
SWP
 Document backup Sprint
SWP
 Swap file
SWT
 Hump Routes File FYM
SXC
 OpenOffice.org XML spreadsheet OpenOffice.org Calc
SXD
 OpenOffice.org XML drawing OpenOffice.org Draw
SXG
 OpenOffice.org XML master document
SXI
 OpenOffice.org XML presentation OpenOffice.org Impress
SXM
 OpenOffice.org XML formula OpenOffice.org Calc
SXP
 3DS Process file 3D Studio
SXW
 OpenOffice.org XML text document OpenOffice.org Writer
SY1
 SmartPix symbol library Ami Pro
SY3
 Harvard Graphics format
SY3
 Symbol file Harvard Graphics 3.0
SYD
 Backup of startup files created by QEMM (?) autoexec.syd
SYD
 Sysedit backup file Sysedit
SYG
 Monitor and handler files created by SYSGEN RT-11
SYM
 Compiler symbolic information file
SYM
 P-CAD component (symbols) P-CAD
SYM
 Precompiled headers Borland C++
SYM
 Program symbol table Power C, Microsoft ILink incremental linker
SYM
 Symbol file Harvard Graphics 2.0, Microsoft Windows SDK
SYN
 SDSC Synu image file SDSC Image Tool
SYN
 Synonym file Microsoft Word 5
SYS
 Datafile SYGRAPH - SYSTAT - SPSS/PC
SYS
 System file - device driver or hardware configuration info DOS
SYW
 Graphics file (symbol) Harvard Graphics Win
SYW
 Yamaha SY-85/SY-99 Wave File Convert (c) Villena
SZPROJ
 SZInstallSystem Project SoftwareZator 2011 Standart Edition

T

Ext. Description Used by
T
 Archive without compression (tape) tar
T
 TADS source
T
 Tester symbol table ReaGeniX code generator
T?H
 Turbo Help file (Pascal, C, Assembler, ...) Borland Thelp
T$M
 AVG scan log files[2] AVG
T2B
 Bookeen Cybook thumbnail Cybook
t2flow
 Taverna 2 workflow definition Taverna workbench
T2L
 True2Life file format 3D Internet content developers
T44
 Temporary file for Sort or Index dBASE IV
T64
 Program C64S emulator
TAG
 Query tag name DataFlex
TAH
 Help file for Turbo Assembler Borland C++
TAK
 Audio codec, Lossless audio file format Winamp (+Plugin), foobar2000 (+Plugin), Media Player Classic - BE
TAL
 Adobe Type Align Adobe
TAL
 Text illustration TypeAlign
TAP
 Tape file ZX Spectrum emulator by g.a.lunter
TAR
 Archive TAR
TAZ
 Archive WinZipNT - TAR - COMPRESS
TB
 Tab file (Virtual Desktop Tab) Tabbery
TB1
 Font file Borland Turbo C
TB2
 Font file Borland Turbo C
TBF
 Fax Imavox TurboFax
TBK
 FOXPRO template backup file FOXPRO
TBK
 Memo backup dBASE IV - FoxPro
TBK
 Toolbook Asymetrix ToolBook
TBL
 Short for Table used by many programs
TBL
 Aldus TableEditor file TableEditor
TBL
 Gate3 table file
TBL
 Graphics file (native format) PageMaker TableEditor
TBL
 Table of values OS/2
TBR
 Norton Desktop custom toolbar NDW
TBS
 Text elements ?? (Textbausteine) Microsoft Word
TBX
 Table Project Scheduler 4 - TermBase eXchange (ISO 30042)
TBZ
 Archive WinZipNT - TAR - Bzip2
TC
 Configuration Turbo C - Borland C++
TCH
 Help file Turbo C - Borland C++
TCL
 Tool Command Language source code Swat
TCT
 Drawing Template TurboCAD for Windows
TCW
 Native Drawing File TurboCAD for Windows
TD
 Config from Turbo Debugger Turbo Debugger
TD0
 Compressed disk image file Teledisk
TD1
 Multi-part disk image file Teledisk
TD2
 Configuration file Turbo Debugger for Win32
TDB
 Database TACT
TDDD
 Imagine Object File Format Imagine
TDF
 Speedo font file
TDF
 Typeface definition file Speedo
TDH
 Help file for Turbo Debugger Borland C++
TDK
 Keystroke recording file Turbo Debugger
TDR
 Contens of Arvid tape
TDS
 Symbol table Turbo Debugger
TDT
 Thumbnail data AVCHD
TDW
 Configuration file Turbo Debugger for Windows
TEC
 Data TECPLOT output
TEC
 TECO macro file ("compiled" form) TECO
TEF
 Fax Relisys TEFAX
TEL
 Host file Telnet
TEM
 Input template IconAuthor
TEM
 Turbo Editor Macro Language script Borland C++
TERM
 Terminal File
TES
 TECO macro file (source form) TECO
TET
 Tetris results DN
TEX
 Datasheet Idealist
TEX
 TeX text file Scientific Word - TeX
TEX
 Image Slimtex
TEXT
 Text file
TF
 Configuration Turbo Profiler
TFA
 Area file Turbo Profiler
TFC
 Catalogue file Tobi's Floppy Cataloguer
TFF
 self executing TansForm dialogue TansForm
TFH
 Help file for Turbo Profiler Borland C++
TFM
 Tagged font metric file Intellifont
TFM
 TeX Font Metric file TeX
TFS
 Statistical information Turbo Profiler
TG1
 Project file On Target
TGA
 Targa True Color bitmapped format Paint.NET
TGZ
 Archive WinZipNT - TAR - GNUzip
TH?
 Packed mail FTN software
THE
 Windows'95 Desktop Theme Microsoft Plus
THM
 Thumbnail or Theme File Picture Publisher, PhotoMagic, Canon Digital Cameras, and Sony Digital Cameras create these Thumbnail files; also used for Sony Ericsson Theme File, for a cell phone
THP
 Nintendo proprietary video format Various Nintendo games
THR
 ThredWorks Embroidery Format Thred, Embroidermodder
THS
 Thesaurus dictionary WordPerfect for Win
TIB
 Acronis True Image Backup Acronis True Image
TIC
 FTN special file with assotiated file description ALLFIX
TIF
 see TIFF
TIFF (tagged image format file) bitmapped file Alchemy - PhotoStyler -PageMaker - CorelDRAW
TIGER
 Tomb Raider binaries files Ubi
TIL
 Fuzzy logic knowledge base Togai InfraLogic Fuzzy-C Compiler
TIP
 Digital Signage Presentation Tru-Designer, Tru-Player, Tru-Scheduler part of Tru-i Suite[3]
TIS
 Tile set MahJongg 3.0
TJL
 Backup file VAXTPU editor
TLB
 Reference table Bubble Chamber
TLB
 Text library VAX
TLB
 Type library A binary file with information about a COM or DCOM object so other applications can use it at runtime. Created by Visual C++ or Visual Studio. Used by many Windows applications.
TLC
 Compiled Tool Command Language source code Swat
TLD
 Disk Image Teledisk
TLH
 Typelib Generated C/C++ Header Visual C++
TLP
 Project TimeLine
TLX
 Website builder Trellix
TM2
 Typical Meteorological Year data (new) Typical Meteorological Year
TMF
 Tagged Font Metric file WordPerfect for Win
TMF
 TiVo movie TiVo
TMO
 ZTG global optimizer default output file Zortech C++
TMO
 HandsHigh ThoughtManager Outline ThoughtManager Desktop
TMP
 Temporary file ALL PROGRAMS
TMS
 TeleMate compiled script TeleMate
TMY
 Typical Meteorological Year data (old) Typical Meteorological Year
TMY2
 Typical Meteorological Year data (new) Typical Meteorological Year
TOC
 Table Of Contents text file (ASCII)
TOCG
 TorgaNET Diplomatic Cables State Department of Torga
TOK
 Borland C++ 4.x reserved word list BCW.EXE
TOG
 TorgaNET TorgaNET database file
TOPC
 TopicCrunch SEO Project file holding keywords, domain and search engine settings (ASCII)
TORRENT
 TORRENT File BitTorrent clients (various)
TOS
 Character file The Only Sheet
TOS
 Self-extracting file archive (Atari ST)
TP
 Session-state file Turbo Profiler
TP
 Turbo Pascal cfg file Turbo Pascal
TP
 TinkerPlots Document TinkerPlots and Fathom Dynamic Data Software; documents contain data tables, graphs, text, pictures, etc.
TP3
 Template Harvard Graphics 3.0
TPB
 Downloadable PCL Soft font file backup HiJaak
TPC
 File produced when an inter-Topicscape topic link file is exported to Windows 3D Topicscape
TPF
 Downloadable PCL Soft font file HiJaak
TPF
 Print data in EMF format ThinPrint
TPH
 Help file Turbo Pascal
TPL
 Resident units library Turbo Pascal
TPL
 Template file GoldEd -ITrack
TPL
 Template Harvard Graphics 2.0
TPOLY
 Data TPOLY 3D object
TPP
 Protected Mode Units Borland Pascal 7.0
TPT
 Digital Signage Presentation Template Tru-Designer, Tru-Scheduler part of Tru-i Suite[3]
TPU
 Borland Pascal DOS Mode Library Borland Pascal
TPU
 Command file (VAXTPU editor) VAXTPU editor
TPW
 Borland Pascal Windows Library Borland Pascal
TPW
 Session-state file Turbo Profiler for Windows
TPZ
 Archive TAR - GNUzip
TR
 Man page input suitable for troff -man cawf2.zip
TR
 Session-state settings Turbo Debugger for DOS
TR2
 Session-state settings Turbo Debugger for Win32
TRC
 Debug support file Power CTrace
TRASH
 File found during a file scan as bugged Windows
TRE
 Directory tree file PC-Tools
TRD
 Datafile TrID file identifier filetypes definitions package
TRIA
 Data Greg Hood's ASCII Triangle
TRIB
 Data Greg Hood's Binary Triangle
TRIF
 Tiled Raster Interchange Format
TRK
 Track (i.e. video sequence), used by many games
TRM
 Terminal settings Windows 3.x
TRN
 Translation support file Quattro - Clarion
TRS
 Executable file Micrografx or password file
TRS
 WiSo Mein Geld 2007
TRS
 IBM Mainframe log file TRSMAIN
TRU
 True Basic source file
TRW
 Session-state settings Turbo Debugger for Windows
TRY
 Typical Meteorological Year data (variant) TRNSYS
TS
 MPEG Transport Stream Various media players / software
TS
 Qt Linguist TS File Trolltech Qt Linguist
TSE
 Data Light Map Maker ASCII Scene
TSK
 Microsoft Multimedia Task Application Win95
TSL
 Exported Schedule Tru-Scheduler part of Tru-i Suite
TSM
 Turbo Assembler Manual TASM for OS/2
TST
 Printer test file WordPerfect for Win
TSV
 Tab Separated Values
TTF
 TrueType Font file
TU?
 Packed mail FTN software
TUD
 The Ultimate Draw file The Ultimate Draw
TUT
 Tutorial
TV
 Table view settings Paradox
TVF
 Table view settings dBASE
TVn
 Overflow file above insert point in Doc n WordPerfect for Win
TXC
 Test Configuration Format
TXF
 Tax eXchange Format
TXI
 Support file TeX
TXT
 Common name for ASCII text file
TXT
 Tab-Delimited Text File Microsoft Excel
TXT
 Document Extension TextEdit
TXW
 Yamaha TX-16W Wave File Convert (c) Villena
TY
 TiVo movie TiVo
TYM
 Time Stamp (PageMaker 4) PageMaker 4
TZ
 Archive TAR - COMPRESS
TZB
 Archive TAR - COMPRESS - BTOA
TZL
 Tanzzle pattern file Tanzzle
TZX
 Tanzzle image file Tanzzle

U

Ext. Description Used by
U3D
 Model file format Ultimate 3D
U3D
 Universal 3D Adobe Acrobat
U8
 Sample
UB
 Raw Unsigned Byte (8bit) data AWAVE
UC2
 Archive UC II
UCN
 New archive UC II
UCS
 Unknownsoft Service Pack (mainly for Shadow OS 2009) Unknownsoft Computer Systems
UDF
 Filter Aldus Photostyler
UDO
 Data Moray User Defined Object
UDIWWW
 bookmark data UdiWWW
UDW
 Raw Unsigned DWord data AWAVE
UE2
 Encrypted archive UC II
UFI
 data UFO CaptureV2 settings -
UFO
 graphic file Ulead Photo Impact
UHA
 UHarc archive
UHS
 Universal Hint System (binary file)
UI
 Espire source code file Geoworks UI Compiler Geos
UI
 Qt Designer's UI File Trolltech Qt Designer
UI
 User interface Sprint
UIF
 Long prompts for windows WordPerfect for Win
UIH
 Espire header file Geoworks UI Compiler Geos
UL
 ULAW audio file
ULD
 Information about uploaded files Procomm Plus - Datastorm Technologies, Inc.
ULF
 data MRF Mapping Tool Kit Universal List Format
ULT
 Music UltraTracker
UMB
 Backup file MemMaker
UMP
 Umple UML Programming Language Format Umple
UNF
 Universal NES Image Interchange File Format
UNI
 Datafile Forecast Pro
UNI
 Music format UNIMOD - MIKMOD
UNIF
 Universal NES Image Interchange File Format
UNV
 Text file containing finite elements nodal coordinates and more See notes Originally used by SDRC for its I-deas software; a lot of simulation software use it today
UNX
 Text file containing UNIX specific info
UOML
 UniqueObject Markup Language (UOML) is a XML-based markup language
UOP
 Uniform Office Format presentation
UOS
 Uniform Office Format spreadsheet
UOT
 Uniform Office Format text
UPD
 Update data dBASE
UPO
 Compiled update data dBASE
URL
 Internet Shortcut (URL) Windows Explorer
URT
 Utah Raster Toolkit
USE
 Log file
USP
 Printer font with USASCII extended character set Adobe PageMaker
USR
 User database file Procomm Plus - Turbo C++ tour
UST
 UTAU vocal track UTAU
UT!
 datafile uTorrent
UTZ
 Mobile Phone Theme Sony Ericsson
UU
 Encoded file (ASCII) UUENCODE/UUDECODE - Uuencoding
UUE
 Encoded file (ASCII) UUENCODE/UUDECODE - Uuencoding
UW
 Raw Unsigned Word 16bit data AWAVE
UWF
 UltraTracker WaveSample UltraTracker

V

Ext. Description Used by
V
 Consistency check support file ReaGeniX code generator
V
 Main input file for an image Vivid 2.0
V
 Coq source file
V
 Verilog source file
V1, V2, ...
 Split parts of a whole file JJSplit
V8
 Covox 8bit file AWAVE
V10
 Data Gouraud Shaded Vectors
V2D
 Voucher design file Voucher management included in JFire (e.g. when printing a voucher)
VAI
 multimedia PhotoDub document
VAL
 Validity checks and referential integrity Paradox for Windows
VAL
 Values list object file dBASE Application Generator
VALA
 Sourcecode Vala
VAN
 Animation VistaPro
VAP
 Value Added Process NetWare 2.xx
VAP
 Dialogic indexed adpcm voice file VBASE/40
VAR
 Variable file IconAuthor
VB
 Visual Basic .Net source file Visual Basic .NET
VBPROJ
 Visual Basic .Net project file Visual Basic .Net Express and Visual Studio 2003-2010 Project
VBR
 Visual Basic Custom Control file Visual Basic
VBS
 VBScript script file VBScript
VBX
 Visual Basic eXtension Visual Basic
VBZ
 Visual Basic Setup Wizard Template Setup Wizard
VC6
 Graphite - 2D and 3D drafting Ashlar-Vellum
VC
 Include file with color definitions Vivid 2.0
VC
 Spreadsheet VisiCalc
VCA
 Visual Clip Art
VCD
 VideoCD
VCD
 VirtualDrive CD Image File
VCD
 Value Change Dump (Verilog) temporal database file
VCD
 VisualCADD Drawing File
VCE
 Visual CertExam File
VCLS
 VocaListener voice scanner file VocaListener Plug-in (Vocaloid3)
VCR
 VCR drivers for Arvid
VCW
 Visual workbench information Microsoft Visual C++
VCX
 Spreatsheet VisiCalc Advanced
VDA
 Bitmap graphics
VDI
 Virtual Disk Image VirtualBox
VDO
 Story Board video image Story Board
VDR
 Drawing ComputerEasy Draw
VEG
 Vegas Project Sony Vegas
VEW
 GroupWise for Windows Win
VEW
 View file Clipper 5 - Lotus Approach
VF0
 Database file OTExpert 5
VFA
 FontLab Database file FontLab
VFD
 Virtual Floppy Disk Windows Virtual PC (among others)
VFM
 Ventura Font Metrics file
VFM
 Voting Form Voter
VFN
 Voting Form for Customers Voter
VGA
 VGA display driver
VGA
 VGA display font
VGD
 VGA display driver Generic CADD
VGM
 Video Game Music audio format
VGR
 Graphics file Ventura Publisher
VHD
 Virtual Hard Disk Windows Virtual PC (among others)
VI
 LabVIEW Virtual Instrument LabVIEW
VI
 Graphics file Jovian Logic VI
VI
 Watcom editor script VI.EXE
VIA
 VIA Document Project VIA Text Editor
VIC
 see VICAR
VICAR
 Graphics (Video Image Communication and Retrieval)
VID
 Bitmap graphics (YUV12C M-Motion Frame Buffer)
VID
 Graphics format Word&Deed
VID
 MS-DOS Shell Monitor file MS-DOS 5
VID
 Screen device driver Word
VIF
 see VIFF
VIFF
 Khoros Visualization Image File Format SDSC Image Tool
VIK
 Graphics format (VIKING)
VIM
 Vim script file Vim text editor
VINF
 data ReMPEG log file - frames info
VIR
 Virus or infected file
VIS
 VIS graphics file
VLM
 Vellum, Vellum 2D, Vellum Draft, Vellum 3D, DrawingBoard Ashlar-Vellum
VLM
 Virtual Loadable Module Netware
VM
 Virtual Memory file Geoworks
VMC
 Virtual memory configuration DOS/4GW PM 32X DOS Extender
Virtual Disk file VMware
VMF
 Font characteristics Ventura Publisher
VMG
 Nokia message file format Text Message Editor (Nokia PC Suite)
VMS
 Text file containing VMS specific info
VMT
 Source Engine resource file Source Engine
VO
 Include file with object definition Vivid 2.0
Video Object DVD-R, DVD-RW
VOC
 Sound format (Creative Lab's Sound File) PlayVoc
VOF
 Object folder VZ Programmer
VOP
 Visual Orangator Project
VOP
 Visual OTTHYMO Project
VOX
 Dialogic adpcm file AWAVE, CoolEdit
VP
 3DS Video posting 3D Studio
VPF
 Vector Product Format
VPG
 Graphics file VPGraphics
VPH
 Virtual Pascal Help VP/OS2
VPI
 Virtual Pascal Unit VP/OS2
VQA
 Vector Quantized Animation The Legend of Kyrandia
VQM
 Hardware description language Altera
VRM
 Overlay file QuattroPro
VRM
 Visual rexx source WATCOM VREXX
VRML
 Virtual Reality Modeling Language NetScape
VRP
 Project WATCOM VX?Rexx
VRS
 Video Resource e.g. video device driver WordPerfect
VS
 Vellum Solids Ashlar-Vellum
VS
 Include file with surface definition Vivid 2.0
VSD
 Diagram Shapeware Visio
VSD
 Visio drawing Visio
VSM
 Visual Simulation Model VisSim
VSP
 Sprite SPX
VSQ
 Vocal synthesizer track data Vocaloid2, Vocaloid3
VSQX
 Vocal synthesizer track data Vocaloid3
VSS
 SmartShapes file Shapeware Visio
VSS
 Visio Template Visio
VST
 Truevision Vista graphics file
VST
 Visio Template Visio
VSTO
 Microsoft Office add-in file Microsoft Visual Studio
VTF
 Source Engine resource file Source Engine
VUE
 Animation 3D Studio
VUE
 View dBASE IV - FoxPro
VW
 Text file VolksWriter
VWR
 File viewer file PC Tools
VWX
 CAD File VectorWorks 2008
VXD
 Windows 3.x virtual device driver Windows 3.x
VZT
 Temporal database file GTKWave data file

W

Ext. Description Used by
W
 Word chart file APPLAUSE
W01
 Yamaha SY-series wave files AWAVE
W01
 Yamaha TX16W wave file AWAVE
W30
 Printer font AST TurboLaser - Ventura Publisher
W31
 Startup file Windows 3.1
W3A
 Warcraft III Abilities Export File Contained in a Warcraft III map
W3B
 Warcraft III Destructables Export File Contained in a Warcraft III map
W3D
 Warcraft III Doodads Export File Contained in a Warcraft III map
W3D
 Westwood 3D object format 3D models used in Renegade and Generals
W3D
 Shockwave 3D object format
W3G
 Warcraft III Replay File File for Warcraft III
W3H
 Warcraft III Buffs Export File Contained in a Warcraft III map
W3M
 Warcraft III Map File for Warcraft III: Reign of Chaos
W3N
 Warcraft III Campaign File for Warcraft III: The Frozen Throne
W3O
 Warcraft III Object Data Export File Contained in a Warcraft III map
W3P
 Warcraft III Save Save File for Warcraft III
W3Q
 Warcraft III Upgrades Export File Contained in a Warcraft III map
W3T
 Warcraft III Item Export File Contained in a Warcraft III map
W3U
 Warcraft III Unit Export File Contained in a Warcraft III map
W3V
 Warcraft III Save Save File for Warcraft III
W3X
 Warcraft III Expansion Map File for Warcraft III: The Frozen Throne
W3Z
 Warcraft III Save Save File for Warcraft III
W40
 renamed system files (AUTOEXEC.BAT, COMMAND.COM, CONFIG.SYS,DBLSPACE.BIN.DRVSPACE.BIN,MSDOS.SYS) of Windows version Windows 95, 98, ME (dual-boot feature)
W44
 Temporary file for Sort or Index dBASE
W95
 Something for Windows95 Win95
WAD
 Where's All the Data? Doom - Doom2
WAD
 Nintendo proprietary format for Wii channels, menus, etc. Nintendo Wii
WAG
 Yard Contents File FYM
WAI
 Warcraft III AI Data File Warcraft III AI Data File
WAR
 Java Web Archive A Java file format used to package and deploy web applications
WAS
 ProComm Script File (source code) ProComm
Sound format (Microsoft Windows RIFF WAVE) Media Player
WAX
 TVTonic WAX video packaging Wavexpress TVTonic
WAX
 ProComm compiled script ProComm
WAX
 Windows Media Audio Shortcut Windows Media Player (Windows Media Audio Redirector)[4]
WB1
 Notebook Quattro Pro
WB2
 Spreadsheet Quattro Pro
WBF
 Microsoft Windows Batch File Catch
WBK
 Document/workbook or Microsoft Word backup file WordPerfect for Win or Microsoft Word
WBT
 Norton Desktop Norton Desktop
WBT
 Wilsonware Batch file Winbatch
WCD
 Condes Event Data file Condes
WCD
 Macro token list WordPerfect for Win
WCH
 WordPerfect Macro Facility WP
WCM
 Data transmission file Microsoft Works
WCM
 Macro WordPerfect for Win
WCP
 Product information description WordPerfect for Win
WD
 InfoSelect Data file
WDB
 Database Microsoft Works
WDM
 Admin tool connection definition War FTP
WE?
 Packed mail FTN software
WEB
 WEB source code file Web Easy Professional
WebOOGL
 Web Object Oriented Graphics Library
WFB
 Turtle Beach WaveFront Bank AWAVE
WFD
 Turtle Beach WaveFront Drum AWAVE
WFM
 Form object dBASE Form Designer
WFN
 Font CorelDRAW
WFP
 Turtle Beach WaveFront Prog. AWAVE
WFT
 Web Family Tree GRAMPS
WFX
 Data file Winfax
WG1
 Worksheet Lotus 1-2-3/G
WG2
 Worksheet Lotus 1-2-3 for OS/2
WID
 Width table Ventura Publisher
WIFI
 Torga OS Wifi Settings Database 14th Information Division (Torga)
Windows Imaging Format ImageX
WIN
 Window file FoxPro - dBASE
WIREFRAME
 Data EMSE mesh
WIX
 Windows Installer XML WiX
WIZ
 Page wizard Microsoft Publisher
WK1
 Spreadsheet Lotus 1-2-3 version 2.x - Lotus Symphony 1.1+
WK3
 Spreadsheet Lotus 1-2-3 version 3.x
WK4
 Spreadsheet Lotus 1-2-3 version 3.4
WKB
 Document WordPerfect for Win
WKE
 Spreadsheet Lotus 1-2-3 educational version
WKF
 VISI Working file Vero Software
WKI
 Spreadsheet format Lotus 123 2x
WKQ
 Spreadsheet Quattro
WKS
 Spreadsheet Lotus 1-2-3 version 1A - Lotus Symphony 1.0, Microsoft Works
WKS
 Workspace Xlisp
WKZ
 Spreadsheet format Dos Navigator
WLK
 Graphics Virtus Walkthrough
WLK
 Walk Through for any game many
WMA
 Windows Media Audio audio file
WMC
 Backup of startup files by Windows MathCad autoexec.wmc MathCad
WMC
 Macro file WordPerfect for Win
WMC
 Text file WordMARC
WMDB
 Windows Media Player database Windows Media Player
Windows MetaFile vector graphics
WMO
 WoW Map Object Blizzard Entertainment games (World of Warcraft/Warcraft series)
WMP
 Graphics (Windows Magic Icon Palette)
WMV
 Windows Media Video video file
WN
 Text NeXT WriteNow
WNF
 Corel Draw Font File CorelDraw
WOA
 Swap file Windows 3.x
WOC
 Organization Windows OrgChart
WOW
 Music (8 channels) Grave Mod Player
WP
 Word Perfect Format WP
WP5
 Document WordPerfect 5.x
WPD
 Document WordPerfect 6.0 - PFS:WindowWorks
WPD
 Windows printer driver (uninstallable) Windows
WPF
 Fax WorldPort
WPF
 Form WordPerfect
WPG
 WordPerfect Graphics vector graphics DrawPerfect
WPJ
 Watcom C/C++ IDE project IDE.EXE
WPK
 Macros WordPerfect for Win
WPL
 MediaRack Wave Playlist MediaRack
WPL
 Windows Media Playlist, for Windows Media Player
WPM
 Macros WordPerfect
WPS
 Text document Microsoft Works
WQ!
 Compressed spreadsheet Quattro Pro
WQ1
 Spreadsheet Quattro Pro
WR1
 Spreatsheet Lotus Symphony 1.1 - 1.2 - 2
WRD
 Template Charisma
WRI
 Write editor format Write - WinWord
WRK
 Spreadsheet Lotus Symphony 1.0
WRL
 VRML file
WRP
 Archive Amiga WARP
WRS
 Windows Resource e.g. might indicate error if word cannot open WordPerfect for Win
WS
 APL Worksheet
WS
 Text file WordStar 5.0-6.0
WS2
 Text file WordStar 2000
WSD
 Document WordStar
WSP
 Workspace Fortran PowerStation
WSQ
 Wavelet-packet Scalar Quantization Format
WSRC
 X-wais source
WST
 Text file WordStar
WTR
 Working Timetable rules file Simsig
WTT
 Working Timetable timings file Simsig
WTF
 World of Warcraft Data File World of Warcraft
WTF
 WinTaper Data
WWB
 Button bar for document window WordPerfect for Win
WWF
 WWF Document Format
WWK
 Keyboard layout WordPerfect for Win
WXH
 Program/Script File WaxHtml Web Programming Language
WXP
 Document EXP for Windows
WZ
 Wizet game archive file Wizet/Nexon MapleStory
WZA
 Encrypted archive file Department of Defense Encryption Wizard (Public Edition)

X

Ext. Description Used by
X
 Archive X1.EXE
X
 AVS X image file SDSC Image Tool
X
 DirectX 3D object
X
 LEX source code file
X
 XBasic Source code file Xbasic
X3D
 x3d and xdart Formats
XA
 XA audio file used in SimCity 3000 by Maxis, also by Sony PlayStation
XAR
 Xara graphics file Files created by Xara Photo & Graphic Designer (formerly Xara Xtreme and Xara Studio); early versions used the extension ART
XBE
 Xbox Executable Xbox
XBM
 X11 Bitmap graphics file
XLBL
 extensible Business Reporting Language Business Reporting
Gimp image file The Gimp
XCK
 Extended crack file (usually text)
XCL
 Xtree for Windows Script file Xtree for Win
XDF
 OS/2 extended disk format image XDFCOPY.EXE
XDM
 Directory Manipulator for 32-bit Protected Mode Xenotech Research Labs
XE
 Xenon - for Associative 3D Modeling Ashlar-Vellum
XEX
 Xbox 360 Executable File
XFN
 Printer font Xerox 4045 - Ventura Publisher
XFR
 Ventura Publisher Bitmap Editor Font file
XFT
 24 pin printer font ChiWriter
XI
 Fast Tracker 2 instrument file AWAVE
XI
 Fastracker 2.0 Instrument File Fastracker 2.0
XIF
 Xerox Image Format Pagis Pro 2.0 and 3.0
XLA
 Add-in macro sheet Microsoft Excel
XLA
 XLib Archive xlibpas2.zip
XLB
 Microsoft Excel Toolbar Microsoft Excel
XLC
 Microsoft Excel Chart Microsoft Excel
XLD
 Microsoft Excel Dialog Microsoft Excel
Extensible LADAR Format LadarSIM
XLK
 Microsoft Excel Archive Microsoft Excel
XLL
 Microsoft Excel Dynamic Link Library Microsoft Excel
XLM
 Microsoft Excel Macro File Microsoft Excel
XLS
 Microsoft Excel Spreadsheet Microsoft Excel
XLSB
 Microsoft Excel 2007 Binary Workbook (BIFF12)(Spreadsheets) Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XLSM
 Microsoft Excel 2007 Macro-Enabled Workbook (Spreadsheets) Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XLSX
 Office Open XML Workbook (Spreadsheets) Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XLT
 Microsoft Excel Template Microsoft Excel
XLT
 Translation table Lotus 1-2-3 - Symphony - Procomm Plus
XLV
 Microsoft Excel Module Microsoft Excel
XLW
 Microsoft Excel Workbook Microsoft Excel
XM
 Fast Tracker 2 extended module AWAVE, Mod4Win, FastTracker, ImpulseTracker
XM
 Music format FastTracker - Cubic Player
XMC
Assisted contact lists file format, based on xml and used in kindergartens and schools Classmates iPhone app
XMOD
 Monarch Model Monarch Professional
XMI
 Compressed eXtended MIdi music
eXtensible Markup Language file
XMF
 eXtensible Music Format
XMPZ
 XML Miradi Project Zipfile Miradi
XMV
 video Xbox
XNF
 Standard Network File form
Xnn
 Secondary indexes Borland Paradox
XOF
 RenderMorphics
XP
 eXtended Pattern FastTracker 2.0
XPL
 X-Plane system file Laminar research
XPM
 X11 Pixel Map graphics file
XPO
 Microsoft Dynamics AX Export file
XPS
 Open XML Paper Specification / OpenXPS open standard document format initially created by Microsoft and similar in concept to Adobe PDF files
XQT
 Executable file Waffle
XQT
 Macro sheet SuperCalc
XRF
 Cross-reference file
XSF
 data Microsoft InfoPath file
XSPF
 XML Sharable Playlist Format
XTB
 External translation table LocoScript
XTP
 XTreeGold overlay XTreeGold
XVF
 Xyngo Video File Xyngo Video Board
XWD
 X Window System window dump image graphics file SDSC Image Tool
XWK
 Keyboard mapping Crosstalk
XWP
 Session Crosstalk
XWP
 Text file Xerox Writer
XX
 Encoded file (ASCII) XXENCODE
XXE
 Encoded file (ASCII) XXENCODE
XXX
 Singer Embroidery Format Embroidermodder
XY
 Text file XY Write
XY3
 Text file XYWrite III
XYW
 Text file XyWrite III
XYZ
 Molecular coordinates XMol, RasMol

Y

Ext. Description Used by
Y
 Archive (Amiga) Yabba
Y
 YACC grammar file Yacc/Bison
YAL
 Data custom/nature.yal Arts & Letters
YC
 Archive YACC (YAC.EXE)
YLIB
 Yookoo Music Library Backup File Yookoo Media Player
Ynn
 Secondary index Borland Paradox
YMP
 Yast Meta Package YAST2 (SUSE Linux Package Manager)
YOOKOO
 Yookoo Playlist Yookoo Media Player
YST
 Data YASRT Raytracer scene
YRD
 Yard Tracks File FYM
YUV
 Graphics format (YUV)
YY
 Bison grammar file Bison
YZ
 Archive YAC

Z

Ext. Description Used by
Z
 Archive WinZipNT - COMPRESS - PACK
Z01-Z99
 Split WinRAR Archive
Z2S
 Zoo Tycoon 2 saved game Any game in the Zoo Tycoon 2 series
Z3
 Infocom game module
Z3D
 Zmodeler-file Zmodeler 1 & 2
Z64
 Nintendo 64 ROM Project64 Nintendo 64 emulator
Z80
 Snapshot ZX Spectrum emulator by g.a.lunter
ZAD
 ZFax digitized voice file ZFax
ZDG
 Compressed ZiffNet text document Zview
ZED
 BitTorrent Link Podmailing
ZER
 Data file
ZIP
 Archive PKZip - WinZip - Mac OS X
ZOO
 Zoo Tycoon saved game Any game in the Zoo Tycoon (first) series
ZUR
 High level compressed file
ZUZ
 Cost etimating file ZUZIA ZUZIAbim
ZS
 Script for Minecraft mod MineTweaker[5] Minetweaker Minecraft Mod
ZYP
 Reason Subtractor Patch File Propellerhead Reason
ZZT
 ZZT World Any world created using the ZZT editor

References

  1. ↑ RFC 5334 Ogg Media types
  2. ↑ "t$m files - FILExt Forum". Filext.com. Retrieved 2012-06-19.
  3. ↑ 3.0 3.1 Tru-i Suite, truknox.com
  4. ↑ "Details of extension .wax". filedesc.com. 2012. Retrieved March 7, 2012.
  5. ↑ Hebben, Stan. "Tutorial:Introduction - Minetweaker 3". minetweaker3.powerofbytes.com. Retrieved 28 September 2014.

External links