A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Num Sym
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.T Tads Source File
Turing Programming Language File
TAR Tape Archive Without Compression
.T_1 Polytext Ma'archot Meida Co. S"TaM
("Sifriyah Toranit M'muchshevet" - Computerized Torah Library)
.T?? Ingres Table/Index File (?? = Hex 00 to FF)
RAR Compressed File (?? can be 01 to 99 after .S99)
.T1 Male MRI [XnView]
EARS Component File (EARS = UK Liberal Democrats
Election Agents Record System) [Filename starts with E]
.T2 Male MRI [XnView]
.T2K Teach2000 Document
.T2T Sonata CAD Modelling File
.T64 C64S Emulator Program
.T98 Kiplinger Tax Cut File (1998 Tax Year)
.T99 Kiplinger Tax Cut File (1999 Tax Year)
(Note: Kiplinger Tax Cut State Return Files are of the form .T??
where ?? is the two-character state designation.)
.TAAC Sun TAAC File [XnView]
.TAB Guitar Tablature File [On-line Guitar Archive]
MapInfo Table
Diabetes Mentor File
ArcView Lookup File
Insight II Table File
.TAF Birdstep Technologies RDM Database (may be embedded in other software)
.TAG Dataflex Query Tag Name
.TAH Turbo Assembler Help File
.TAI INMOS Transputer Development System Occam Analyse Info
.TAL Adobe TypeAlign Text Illustration File
Typed Assembly Language File
.TAM Tame Program Settings
.TAO IsoBuster File
.TAP Raw C64 Cassette Tape Image [Format]
.TAR Compressed Archive File
.TARGA Truevision Targa Bitmap [XnView]
.TASP TASP Strategy Planner Data File (TASP = Tactical Assault Strategy Planner.
TASP Allows Gaming Clans to create 2D graphical strategy plans.)
.TAT Geographic Text Attribute Table
Text File (some downloads)
.TAX Turbotax File
.TAZ Compressed File (short for .tar.z)
.TB1 Turbo C Font
.TB2 Turbo C Font
.TBA PASSOLO Licensed Translation Bundle (Software localization: translation, etc.)
DB/TextWorks Database Primary Textbase Definition
.TBALIC400 PASSOLO Translation Bundle (Software localization: translation, etc.)
.TBB The Bat! E-mail Hives
.TBC IronCAD Tool Bar Customization
Inovate Tool Bar Customization
.TBD MS Visual Studio File (TOOLBOX.TBD)
.TBE TMPGEnc List File (video editing)
.TBF Imavox TurboFax Faxs
Trellian Button Factory File
.TBG TeamBG File (modify Infinity Engine games)
.TBH Mah Jongg for Windows Tile Set
.TBI The Bat! Hive Index
.TBK Memo Backup (database programs)
Asymetrix Toolbook
The Bat! Backup Hives
.TBL Adobe Pagemaker Import Mapping Table
OS/2 Table of Values
ArcView Geocoding Support Table
Insight II Graph Data File
Starcraft Information Table
.TBP TAS Books Accounts
.TBPA Tektronix Bluetooth Protocol Analyzer
.TBR SoftQuad XMetaL Toolbar/Menu Configuration
.TBT TabIt (Guitar Tablature Editor)
.TBU PASSOLO Translation Bundle (Unicode) (Software localization: translation, etc.)
.TBULIC400 PASSOLO Translation Bundle (Unicode)
(Software localization: translation, etc.)
.TBX Project Scheduler Table
.TC Borland Configurations File
.TCF Theme Park World Game File
.TCH Borland Help File
Complete Works Graph and Chart
(The Complete Works product appears to no longer be offered or supported.)
.TCI INMOS Transputer Development System Occam Configuration Info
.TCL TCL/TK Language Script
TextPad Clip Library
SLIDE: Scene Language for Interactive Dynamic Environments File
.TCM INMOS Transputer Development System Occam Comment Text File
.TCS TOPCALL Voicemail Player
(Gives access to .wav-formatted audio-files directly in your mailbox.)
.TCT Championship Manager Game File
TurboCAD Template
.TCW TurboCAD Drawing
.TCX TurboCAD Drawing as Text
.TD Turbo Debugger Configuration File
.TD2 Turbo Debugger Configuration File
.TD4 RollerCoaster Tycoon Track Design
ThumbsPlus Version 4.x+ Graphics Database
.TD6 RollerCoaster Tycoon Track Design
.TDA Palm Date Book File
.TDB Thumbs Plus Database
Dйjа Vu Terminology Database (translation tool)
ProWORX Nxt Title Data (Used with blocking - Found in the NxT directory)
Complete Works Database (The Complete Works product appears to no
longer be offered or supported.)
.TDF Trace Definition File
TheDraw Font
Typeface Definition File (for fonts)
MicroSim PCBoard NC Drill Tool Definition File
ProWORX Nxt Title Data (Found in the NxT directory)
.TDH Turbo Debugger Help File
.TDI Explore (TDI) & Maya [XnView]
.TDIM Digital F/X [XnView]
.TDK Turbo Debugger Keyboard Record
.TDL FOCUS Three Dimensional Look File
.TDO Compressed File
.TDP Serif DrawPlus Thumbnail
.TDR Tina Pro for Windows V6.0+ Graph/Results (electronic circuit simulator)
.TDS Turbo Debugger Symbol Table
Triangle Digital Services Ltd. Embedded Computer Source Code (ASCII files)
.TDT Daylight Fingerprint Data File
ASCII Data File in CSV Format (various)
.TDW Turbo Debugger Configuration File
.TDX Tony Hawks Pro Skater 3 Texture File
.TDY TODAY or BuildPro Application File
.TE Textease File
.TE2 Conquest of the New World
.TEA Tea Template Source File
.TED Tribes 2 Game File
.TEE TeeChart Office Graphic
.TEF Relisys Tefax Fax
TablEdit (creating, editing, printing and listening to tablature)
.TEL Telnet Host File
.TEM Icon Author Template
Turbo Editor Macro Language
Badge Designer 2000 File
.TEMP Audiogalaxy Downloading Music File (file renamed when download complete)
.TEO Vincent Draw Drawing (French site)
.TER TerraGen Landscape File
Daylon Leveller Heightfield Data
.TET Textease Template
.TEX TeX
LaTeX File
Mackichan Scientific Notebook File
PaintShop Pro Texture [XnView]
Texture File (various) [usually a renamed .BMP file
and may be in special directory]
Idealist Datasheet
Concordance Full Text Database File
.TEXT ASCII Text File (use any editor to open)
.TF Turbo Profiler Configuration File
.TFA Turbo Profiler Area File
.TFC Tobi's Floppy Cataloguer Catalog
.TFH Turbo Profiler Help File
.TFM Tagged Font Metric
TeX Font Metric File
Toplevel Form File
Twins File Merger
.TFP ProWORX Nxt Full Page Data File (Found in the NxT directory)
.TFR Star Wars - Tie Fighter Game-Pilot File
IBM Client Access File Transfer
4D Database Windows Formula Document
Time-Frequency Representation (Frequency analysis)
.TFS Turbo Profiler Statistic
.TFW Digital Raster Graphic World
ArcView World File For TIF Image
.TFX Traffix Traffic Analysis Software
.TG1 On Target Project File
.TG4 CCITT Group 4 Fax [XnView]
.TGA Truevision Targa Graphic [XnView] [IrfanView]
(Used by some game programs -- sometimes called texture files)
RealFlight Radio Control Aircraft Simulator Trim Scheme
.TGD Nimbus 7 SAMS Data File (gridded temperature data)
.TGH Tiliagraph File (Stratigraphic Diagram Software)
TrueGas Host File
.TGM Nem's Mega 3D Terrain Generator
.TGT Sybase Watcom C/C++ Individual Target
.TGW Terragen Atmosphere File
.TGZ UNIX Tar File Gzipped (short for .tar.gz)
.THB KinuPix Skin [XnView]
.THD Thread
.THEME Microsoft Plus! Theme File
.THM Microsoft Clipart Gallery Database
Serif DrawPlus Theme
Video Thumbnail File (EXIF header and thumbnail)
.THN Graphics Workshop for Windows Thumbnail
.THP TurboTax-related File
LiveMath Plug-in
TeeGofer Help Project (.NET Help author application)
.THR PROGNOSIS Threshold Document File
.THS WordPerfect Thesaurus
.THU Command and Conquer Renegade File
.TIB Acronis True Image (hard drive partition manager)
.TIC Lotto Pro 2002 Ticket
Arcinfo Coordinates File (GIS-related file)
.TIE X-wing Alliance Game File
.TIF Tagged Image Format File (also most fax files)
[XnView] [IrfanView] [SwiftView]
Digital Raster Graphic Image
.TIFF Tagged Image Format File [XnView] [IrfanView] [SwiftView]
.TIG Tiger Government Map File
.TIK Script File for Game Textures (ASCII file)
.TIL Togai InfraLogic Fuzzy-C Knowledge Base
Buttonz & Tilez Texture [XnView]
Tilia File
.TIM Playstation Game Texture Image [XnView]
The Incredible Machine Level File
TIFF Image (rev 6) [XnView]
.TIP Startup Tip File (various)
.TIS MahJongg Tile Set
Infinity Game Engine Tileset Information [More Info]
.TIX Hybrid Graphics File (both vector and raster data)
ASA for UNIX Terminfo Extension File
Tix Widgets
DivX File
.TK TK Solver File
.TK2 Take Two/Easy CD Creator Backup
.TKB TicketBench Data File (design/print tickets)
.TKM Panasonic SD Voice Editor File
tkMOO-light (advanced chat client for muds and MOO systems)
.TJF VAXTPU Backup File (VAXTPU is default OpenVMS editor)
.TKN Liberty BASIC Application Distribution File
.TKT TK Solver File
.TKW TK Solver File
.TLB Remote Automation Truelib Files
OLE Type Library
Visual C++ Type Library
Borland Type Library
VAX Text Library
Bubble Chamber Reference Table
.TLC Swat Compiled Tood Command Language Source
.TLD Trellix File
.TLE NASA Two-Line Element Set
.TLF Turnpike SCORE Link File
Avant! Memory Compiler Memory Models Format File
Gear Track List File (CD burning)
(Used to be .CUE; just rename .CUE to .TLF)
Short Message Service File (GSM phone messaging)
.TLG Trellix WebGem
.TLK Hand of Fate Archive [Dragon UnPACKer]
Lands of Lore Archive [Dragon UnPACKer]
Infinity Game Engine Lookup Table [More Info]
.TLP Microsoft Project Timeline File
.TLS Timeless Time & Expense
.TLT Trellix Web Design File
TList Data File
.TLX Telex
CuteSITE Builder File (was Trellix Data File - taken over
by Globalscape and renamed)
Technics Sx KN 6000 Keyboard Text Lyrics File
.TM Technics Keyboard Sound Memory File
HP Internet Advisor (pre-Win95) Capture File
.TMA DCI TradeManager Catalog Archive
.TMB Timbuktu Pro Connection Document (remote control software)
.TMC DCI TradeManager Catalog Archive
.TMD TextMaker
.TMF WordPerfect Tagged Font Metric File
.TMG The Marketing Game File
.TML AIRO Timeline File
.TMO Zortech C++ Global Optimizer Output File
.TMP Temporary File/Folder
Norton AntiVirus Backed Up File
.TMQ TestMaster File
.TMR Simpsons Cartoon Studio File
.TMS Telemate Script
.TMW TRADOS Translator's Workbench (computer-aided translation)
.TN1 Tiny [XnView]
.TN2 Tiny [XnView]
.TN3 Tiny [XnView]
.TNC SuperJPG ThumbNail Cache File
.TNEF Transport Neutral Encapsulation Format File
.TNF Transport Neutral Encapsulation Format File
.TNK OMEGA Tank File (Origin Systems game no longer marketed) [Info]
Nimbus 7 SAMS Data File (pre-launch calibration data)
TrunkTrac Scanner Info
.TNL Thumbnail [XnView]
.TNT TurnTool File (Interactive Realtime Web 3D.) [Viewer]
.TNY Tiny [XnView]
.TOC Eudora Table Of Contents
.TOF Mr. Photo Temporary Thumbnail File
.TOH Infinity Game Engine Talk Table Override Header [More Info]
.TOL Kodak Photoenhancer
.TONE SOFT-TECH Alarm Clock and Raceway (sound file)
.TOP INMOS Transputer Development System Occam Top Level File
QuickVerse File (Bible reading program)
.TOR Lomax Software Info File
.TORRENT BitTorrent Metainfo File (a protocol for distributing files)
[MIME: application/x-bittorrent]
.TOS Atari Executable (TOS = The Operating System - Sometimes an archive)
.TOT Telelogic Option Templates
Infinity Game Engine Talk Table Override Text [More Info]
.TP Turbo Pascal Configuration File
Turbo Profiler Session-state File
EROSION 3D Relief Parameters [Format (pdf)]
.TP3 Harvard Template (Harvard Graphics taken over by Serif)
.TP4 RollerCoaster Tycoon Track Design Screenshot
.TP6 Top Producer System 6/6i Data (contact management)
.TPA GROMACS Portable Binary Run Input File (Molecular dynamics)
.TPB HiJaak PCL Soft Font File Backup
GROMACS Portable Binary Run Input File (Molecular dynamics)
.TPC TokenPeek File
.TPE Clarion for Windows Example File (used in repair of .TPS file)
.TPF HiJaak PCL Soft Font File
.TPH Turbo Pascal Help File
.TPI Visual Test Shell File (tests BACnet function of building automation equipment)
[Also called EPICS (electronic protocol implementation conformance statement)]
.TPJ TestStand Project
.TPL Turbo Pascal Resident Units
Harvard Template (Harvard Graphics taken over by Serif)
fKey Template Designer Template File
NoteTab Template
CakeWalk Audio Template File
DataCAD Template File
Canvas 7 Template
Peachtree Software Timeslips TSImport Template
Adobe Photoshop Tool Preset File
Microsoft Access Workflow Designer
TextBridge Template
.TPM TextPad Macro
.TPP Turbo Pascal Protected Mode Units
Teleport Pro Project (Web spider)
TypePlus File
.TPR GROMACS Portable Binary Run Input File (Molecular dynamics)
Together Project Definition
TMPEG Enc Video Conversion Project File
Clarion for Windows Repaired Data File (temporary file)
.TPS Clarion for Windows Data File
Micro Perfect Products (Vertical Specialized Software Solutions)
.TPU Turbo Pascal Unit
VAXTPU Command File (VAXTPU is default OpenVMS editor)
.TPW Turbo Pascal Unit
Turbo Profiler Session-state File
.TPX Ulead Photo Express Template
.TPZ Compressed File (short for .tar.gz)
.TQI Insure++ File
.TQL Microsoft SQL Server Query Analyzer Header File (ASCII text file)
Tree Query Language File (PDF link)
Insure++ File
.TQS Insure++ File
.TR Turbo Debugger Session-state Settings
Manual Page Input to UNIX troff -man Command
Proporta TomeRaider Compressed eBook File
.TR1 Novell LANalyzer Capture File
.TR2 Turbo Debugger Session-state Settings
.TR5 Tree Professional File
.TRACE Telcordia Software Visualization and Analysis Toolsuite (testing software)
ECXpert Debugging File
WebSTAR Mail Server Error File
Zope 3 Strace Log
TcpDump Output File
.TRC Power CTrace Debug Support File
Oracle SQL*Net Trace Debug File
True BASIC Compiled Code
NAI Sniffer DOS Capture File
.TRE PC Tools Directory Tree
VisiRex SDK Tree Function File
Kith and Kin Export File (document/store family trees)
TreeAge Decision Tree File
Wing Commander Series Movie/Game File
EA SPORTS File
.TRF DocuMagix File
.TRG Symantec LiveUpdate File
.TRI Trigram File
Neuroscan 3D Space Triangulated Head Surface [Format]
Quake texmake Utility Output (Produces a wireframe
outline for artists to draw in)
Symantec LiveUpdate Product Update List (File: LIVEUPDT.TRI)
Cart3D Triangulation (High-fidelity inviscid analysis package
for conceptual and preliminary aerodynamic design.
Ribbons FRODO Contours (Triangles) (Molecular graphics software)
.TRK Kermit Script File
Mixman Studio Track
Train Dispatcher Railroad Centgralized Traffic Control Simulation
.TRM Terminal Settings (various)
TRiM High-compression Lossless 8 to 32 bit Truecolor Image File
.TRN Quattro Translation
Adobe Pagemaker File
STN Express Transcript Text File (search science databases through STN®)
Microsoft SQL Server Transaction Backup
TextBridge Training Data
MKS Source Integrity Project Log
.TRO Anti-Trojan File
.TRP Tripmaker File
.TRS Micrografx Executable File
EROSION 3D Temporal Event File [Format (pdf)]
.TRT Team Sports Scheduling System Report Template
.TRU True BASIC Source Code
TruSys System Comparison File
.TRW Turbo Debugger Session-state Settings
.TRX Emerald PC Authorize Batch Transaction File
PASSOLO Translation File (Software localization: translation, etc.)
.TS Tune Smithy File
.TSB 3dMD or 3Q Viewer 3D Image [3Q]
.TSC Top Secret Crypto Gold File
Tina Pro for Windows V6.0+ Package Schematics (electronic circuit simulator)
.TSCE TextShield Zip-compressed .RTF File (TextShield Compression Engine)
.TSD Tamino Schema Editor (Creation and Change Tamino XML Schema Definitions)
.TSF ProWORX Nxt Symbol File (Found in the NxT directory)
TASP Save Strategy File (TASP = Tactical Assault Strategy Planner.
TASP Allows Gaming Clans to create 2D graphical strategy plans.)
.TSG Enable File (DOS suite made by The Software Group)
.TSK Skins (Themes) for Pocket PC PDAs
PhotoImpact Quick Command
.TSL Borland TeamSource File
.TSP Windows Telephony Service Provider
.TSR INMOS Transputer Development System Occam Program Source
.TSS Team Sports Scheduling System Project File
Complete Works Spreadsheet (The Complete Works product appears
to no longer be offered or supported.)
.TST WordPerfect Printer Test File
TextShield Template
Test File
.TSV Tab Separated Values File (MIME: text/tab-separated-values)
.TSW TestStand Workspace
.TSX Team Sports Scheduling System XML Project File
.TT ThinkTank Outliner (old Apple program)
Star Trek Armada Game Techtree Information
.TTC TrueType Compressed Font
.TTF TrueType Font
.TTK Alchemy Catalyst Translation Toolkit (purchased from Corel)
.TTL Tera Term Macro File
.TTO IBM Client Access File Transfer Description
.TTP Telelogic Tau Project
Atari TOS Executable With Parameters (TOS-Takes-Parameters)
.TTR TeeTree Office File
.TTW Telelogic Tau Workspace
.TTX Crystal Reports Data Connection File
Technics Keyboard Long Filenames File
TRADOS TagEditor TRADOStag XML (computer-aided translation)
.TTY Dreamweaver 3 Trial File (gets decoded to .EXE file and other support files)
.TUB PaintShop Pro Tube File [XnView]
.TUD Thumbs Plus Viewer Graphics
.TUO Thumbs Plus Viewer Graphics
.TUT Tutorial
.TV Paradox Table View Settings
.TV1 WordPerfect Overflow File Above Doc 1 Insert Point (can be 1-9)
.TV4 TValue File (Amortization and time-value-of-money calculations)
.TVC Microsoft Dungeon Siege File [View with Tankviewer]
.TVI Terminal Velocity Game Animation File
.TVM TVMconv
.TVO TeveoLive (video recording)
.TVP NVIDIA Graphic Card Update File
.TVS VectorMAX Streaming Video
.TVT RealPlayer
.TVVI InterVideo WInDVR
.TWC Tripwire Configuration File (intrusion detection)
.TWD Simtech MindMapper Mind Map
.TWE ThinkWave Educator Data File
.TWF TabWorks File
Georeferenced Information File
Casio Organizer File
.TWG ThatWaltGuy Web Server File
.TWP Toplevel Computing Fine Words (DOS Word Processor)
Tripwire Policy File (intrusion detection)
Complete Works Word Processing Document (The Complete Works product appears
to no longer be offered or supported.)
.TWR Tripwire Report File (intrusion detection)
.TWS TextPad Workspace File
Tripwire Schedule File (intrusion detection)
.TWW Tagwrite Template
.TX2 Typequick File
.TX8 DOS Text File
.TXB Descent/D2 Encoded Briefing File
.TXC Urban Chaos Game File
EverQuest Cached Compressed Texture
.TXD Grand Theft Auto 3 Texture Dictionary [ResHack or GTA3 Mods to veiw and modify]
Letters Direct (mail merge)
.TXE Enriched Text File [Info]
.TXF Compressed File (short for .tar.f)
Tax Exchange Format (ASCII transfer format to tax programs.)
.TXG Questionnaire Specification Language File
SecureGroup File
Georeference Subobject File
.TXI TeX Support File
.TXL Genesis3D Texture File
.TXM DATAIR Pension Reporter Data File
.TXS Letters Direct (mail merge)
.TXT Text File (open in Notepad, WordPad, Word, or many other programs)
.TXW Yamaha TX16W Wave Files [Linux Player]
.TXX DataPerfect Text Storage
.TY2 Gualtieri Theme Maker (Windows themes) (No Web page)
.TYM PageMaker Time Stamp
.TZ Compressed File (short for .tar.z)
Ingres Time Zone File
.TZB Compressed File (short for .tar.z.btoa)