Alphabetically: T
Extension File Description File Type
.t
Turing Source Code File
Developer
.t$m
AVG Internet Security Temporary File
Misc
.t01
TaxCut 2001 File
Data
.t02
TaxCut 2002 File
Data
.t03
TaxCut 2003 File
Data
.t04
TaxCut 2004 File
Data
.t05
TaxCut 2005 Tax Return
Data
.t06
TaxCut 2006 Tax Return
Data
.t07
TaxCut 2007 Tax Return
Data
.t08
TaxCut 2008 Tax Return
Data
.t09
At Home 2009 Tax Return
Data
.t10
At Home 2010 Tax Return
Data
.t2
Textease 2000 File
Data
.t2b
CyBook Thumbnail Image
Raster Image
.t3001
TARGET 3001! Circuit Design Project File
CAD
.t3d
Unreal Engine 3D Object File
3D Image
.t3x
TYPO3 Compressed Extension
Plugin
.t64
Commodore 64 Tape Image File
Disk Image
.taac
Sun TAAC Image File
Raster Image
.tab
Guitar Tablature File
Text
.taf
ADRIFT Text Adventure File
Game
.tag
DataFlex Query Tag
Misc
.tao
Track at Once CD/DVD Image
Disk Image
.tap
Commodore 64 Cassette Tape Image
Disk Image
.tar
Consolidated Unix File Archive
Data
.tar.gz
Tarball File
Compressed
.tar.xz
XZ Compressed Tar Archive
Compressed
.targets
MSBuild Targets File
Developer
.tax
TurboTax Tax Return
Misc
.tax08
TurboTax 2008 Tax Return File
Data
.tax09
TurboTax 2009 Tax Return File
Data
.tax10
TurboTax 2010 Tax Return File
Data
.tax2008
TurboTax 2008 Tax Return
Data
.tax2009
TurboTax 2009 Tax Return
Data
.tax2010
TurboTax 2010 Tax Return
Data
.taz
Tar Zipped File
Compressed
.tb
Tabbery Tab File
Data
.tb0
Adobe Photoshop Thumbnail Cache File
Raster Image
.tbk
ToolBook File
Data
.tbl
StarCraft Information Table
Data
.tbm
Toribash Mod File
Game
.tbs
TuneUp Utilities Boot Screen
Misc
.tbz
Bzip Compressed Tar Archive
Compressed
.tbz2
Tar BZip 2 Compressed File
Compressed
.tc
TrueCrypt Volume
Disk Image
.tc2
TurboCAD 2D Mac Drawing
CAD
.tc3
TurboCAD 2D/3D Mac Drawing
CAD
.tcc
TimeCalc Classic Data File
Data
.tcd
Technobox CAD Drawing
CAD
.tcl
Tcl Script
Developer
.tcm
TurboCAD Mac Drawing
CAD
.tcp
Tally Compiled Program File
Executable
.tct
TurboCAD Drawing Template
CAD
.tcw
TurboCAD Drawing File
CAD
.tcx
TurboCAD 3D Model Text File
CAD
.td0
Teledisk Archive
Disk Image
.tda
Palm To-Do File
Data
.tda3mt
DivX Author Template File
Video
.tdb
eBay Turbo Lister Backup File
Backup
.tddd
3D Data Description File
3D Image
.tde
Tablaeu Data Extract File
Data
.tdf
Guide Text Definition File
Text
.tdl
MathType Translator Definition Language
Misc
.tdm
LabVIEW Binary Measurement File
Data
.tds
Turbo Debugger Symbols File
Developer
.tdt
THOR Data Tree File
Data
.te
Textease CT Database File
Database
.te3
WinTrack Object File
Data
.teacher
SMART Response Teacher Database File
Database
.ted
Alamo Map File
Game
.tef
TablEdit Tablature
Data
.temp
Temporary (Temp) File
Misc
.template
Apple Pages Template
Text
.testrunconfig
Visual Studio Test Run Configuration File
Developer
.testsettings
Visual Studio Test Settings File
Developer
.tet
Textease CT Template
Data
.tex
LaTeX Source Document
Text
.text
Plain Text File
Text
.textclipping
Mac OS X Text Clipping File
Text
.tfa
TreeSoft CashFlow Analysis Data File
Data
.tfd
Tape Format Requirements Document
Data
.tfmx
Final Music System Tracker Module
Audio
.tfrd
Tape Image Format Requirements Document
GIS
.tfw
World File for TIFF
GIS
.tg
TuxGuitar Document
Audio
.tg4
Tiled Group 4 Raster Image File
Raster Image
.tga
Targa Graphic
Raster Image
.tgz
Gzipped Tar File
Compressed
.the
Microsoft Plus! Theme File
Settings
.theme
Microsoft Plus! Desktop Theme
System
.themepack
Windows 7 Theme Pack
Settings
.thm
Thumbnail Image File
Raster Image
.thmx
Office 2007 Theme File
Settings
.thp
TurboTax Text String
Text
.thumb
JAlbum Thumbnail File
Raster Image
.thx
Amiga THX Tracker Music File
Audio
.tib
Acronis True Image File
Disk Image
.tif
Tagged Image File
Raster Image
.tiff
Tagged Image File Format
Raster Image
.tig
TI Connect Backup File
Backup
.tim
The Incredible Machine Level
Game
.tip
TuneUp Utilities Icon Package
Misc
.tiprogram
TI-Basic Program File
Developer
.tivo
TiVo Video File
Video
.tix
DivX Video Download Activation File
Video
.tjp
TaskJuggler Project File
Data
.tk
Tk Script
Developer
.tk3
TK3 Multimedia eBook
Data
.tkfl
TKLinks Saver Favorite Links File
Data
.tko
Win32/Oficla Trojan File
Misc
.tla
TuneUp Utilities Startup Logo
Misc
.tlb
OLE Type Library
Misc
.tlc
The Logo Creator File
Vector Image
.tlg
QuickBooks Transaction Log File
Backup
.tlh
Typelib Generated C/C++ Header File
Developer
.tli
Typelib Generated C/C++ Inline File
Developer
.tls
TuneUp Utilities Logon Screen
Misc
.tlx
Standard Dictionary File
Data
.tlz
Tar LZMA Compressed File
Compressed
.tlzma
LZMA Compressed Tar Archive
Compressed
.tm
TeXmacs Document
Text
.tmb
Timbuktu Pro Connection Document
Misc
.tmd
TextMaker Document
Text
.tme
Bryce Time File
3D Image
.tmp
Temporary File
Backup
.tmpl
Xfire User Interface Template
Misc
.tmr
Apimac Timer Document
Data
.tms
Telemate Script
Executable
.tmw
Translation Memory Data File
Data
.tmx
Translation Memory eXchange File
Text
.tn1
Tiny Low Resolution Image
Raster Image
.tn2
Tiny Medium Resolution Image
Raster Image
.tn3
Tiny High Resolution Image
Raster Image
.tnef
Transport Neutral Encapsulation Format
Misc
.tny
Atari Tiny Image
Raster Image
.toast
Toast Disc Image
Disk Image
.toc
Eudora Table of Contents
Misc
.tod
JVC Everio Video Capture File
Video
.tol
AOL Tool File
Data
.topc
TopicCrunch Project File
Data
.torrent
BitTorrent File
Misc
.tp
Beyond TV Transport Stream File
Video
.tp0
Mascom PVR Video File
Video
.tp3
Harvard Graphics DOS Template File
Layout
.tpb
GROMACS Binary Input File
Data
.tpc
Topic Connection Placeholder
Text
.tpd
Cyberlink TOD Video File
Video
.tpf
Transit NXT Pack Translation File
Data
.tpi
EDIUS Plugin File
Plugin
.tpl
Document Template
Misc
.tpm
Trusted Platform Module Password File
Misc
.tpr
TMPGEnc Project File
Video
.tps
Clarion TopSpeed Data File
Misc
.tpu
Turbo Pascal Unit
Developer
.tpx
Turbo Pascal 7 Unit
Developer
.tpz
Kindle Topaz eBook File
Data
.tr3
TomeRaider eBook File
Data
.tra
WinTrack Railroad Track File
Data
.trc
Oracle Trace File
Misc
.trd
TrID Definitions Package
Data
.tri
FaceGen Polygonal Model File
3D Image
.trif
Tiled Raster Interchange Format
Raster Image
.trk
CompeGPS Land Track File
Data
.trp
HD Video Transport Stream
Video
.trs
Rosetta Stone Language Data File
Data
.truck
Rigs of Rods Truck Definition File
3D Image
.trx
Visual Studio Test Results File
Developer
.ts
Video Transport Stream File
Video
.tsk
Pocket PC Skin
Settings
.tsm
TwinCAT System Manager Configuration File
Settings
.tsp
TrueSpeech Audio File
Audio
.tst
TestPoint Test File
Data
.tstream
SwarmPlayer Streaming Torrent
Misc
.tsv
Tab Separated Values File
Data
.tsz
Trillian Skin File
Settings
.tt
Visual Studio Text Template
Developer
.tta
True Audio File
Audio
.ttc
TrueType Font Collection
Font
.ttf
TrueType Font
Font
.ttk
Catalyst Translation Toolkit
Data
.ttx
Trados TagEditor File
Misc
.tu
Turing Source File
Developer
.tub
Paint Shop Pro Picture Tube
Misc
.tur
Turing Program Source File
Developer
.tvj
TrueView Job Ticket
Text
.tvl
TurboTax File
Misc
.tvpi
TitanTV Television Listing File
Web
.tvs
TeamViewer Video Session File
Video
.tvvi
TitanTV Television Listing File
Web
.twb
Tableau Workbook File
Data
.twbx
Tableau Packaged Workbook
Data
.twc
TTWin Configuration File
Settings
.twt
Carmageddon 2 Data File
Game
.txa
Midas ViewPoint Text Array List
Data
.txd
Game Texture Dictionary
Data
.txf
Tax Exchange Format
Data
.txn
MySpaceIM Conversation Log File
Data
.txt
Plain Text File
Text
.txw
Yamaha TX16W Audio File
Audio
.txz
XZ Compressed Tar Archive
Compressed
.typeit4me
TypeIt4Me Clippings File
Settings
.tz
Zipped Tar Archive
Compressed
.tzx
ZX Spectrum Tape Image File
Disk Image