T File Extensions
Browse file types with extensions beginning with T.
| Extension | File Type | Popularity |
|---|---|---|
| .T | Turing Source Code File | 3.1 |
| .T$M | AVG Internet Security Temporary File | 4.3 |
| .T05 | TaxCut 2005 Tax Return | 4.0 |
| .T06 | TaxCut 2006 Tax Return | 3.0 |
| .T07 | TaxCut 2007 Tax Return | 3.3 |
| .T08 | TaxCut 2008 Tax Return | 3.0 |
| .T09 | At Home 2009 Tax Return | 2.5 |
| .T10 | At Home 2010 Tax Return | 3.7 |
| .T11 | At Home 2011 Tax Return | 3.0 |
| .T12 | At Home 2012 Tax Return | 3.8 |
| .T13 | H&R Block 2013 Tax Return | 3.3 |
| .T14 | H&R Block 2014 Tax Return | 3.9 |
| .T15 | H&R Block 2015 Tax Return | 3.5 |
| .T16 | H&R Block 2016 Tax Return | 3.0 |
| .T17 | H&R Block 2017 Tax Return | 3.6 |
| .T18 | H&R Block 2018 Tax Return | 3.5 |
| .T19 | H&R Block 2019 Tax Return | 3.3 |
| .T2 | Textease 2000 File | 2.5 |
| .T20 | H&R Block 2020 Tax Return | 4.0 |
| .T21 | H&R Block 2021 Tax Return | 3.0 |
| .T22 | H&R Block 2022 Tax Return | 3.5 |
| .T2B | CyBook Thumbnail Image | 3.0 |
| .T2D | TouchDraw Document | 3.4 |
| .T2K | Canfield Image File | 2.0 |
| .T3001 | TARGET 3001! Circuit Design Project File | 3.0 |
| .T3D | Unreal Engine 3D Object File | 3.9 |
| .T3D | Swift 3D Document | 4.0 |
| .T3D | TicTacTi Advertisement Definition File | 3.0 |
| .T64 | Commodore 64 Tape Image File | 3.2 |
| .T65 | PageMaker Template File | 2.0 |
| .TA0 | TaxAct 2020 1040 Tax Return File | 2.8 |
| .TA1 | TaxAct 2021 1040 Tax Return | 3.0 |
| .TA4 | TaxAct 2014 Tax Return File | 2.5 |
| .TA5 | TaxAct 2015 Tax Return File | 3.6 |
| .TA6 | TaxAct 2016 Tax Return File | 4.0 |
| .TA7 | TaxAct 2017 Tax Return File | 4.0 |
| .TA8 | TaxAct 2018 Tax Return File | 4.0 |
| .TA9 | TaxAct 2019 Tax Return File | 4.5 |
| .TAB | MapInfo TAB File | 3.2 |
| .TAB | Typinator Set File | 3.8 |
| .TABLECONTENT | SMART Table Activity Pack File | 3.5 |
| .TAC | ActiCalc Data File | 1.5 |
| .TAG | DataFlex Data File | 3.7 |
| .TAK | Tom's Lossless Audio Kompressor File | 3.6 |
| .TAO | Track-At-Once CD or DVD Image | 2.0 |
| .TAP | Commodore 64 Cassette Tape Image | 3.3 |
| .TAPESTRY | Tapestry Connector | 3.0 |
| .TAR | Tape Archive | 3.7 |
| .TAR.BZ2 | Compressed Tarball File | 3.4 |
| .TAR.GZ | Compressed Tarball File | 3.8 |
| .TAR.GZ2 | Misnamed BZ2 Tarball | 1.8 |
| .TAR.LZ | Lzip Compressed Tarball | 3.2 |
| .TAR.LZMA | LZMA Compressed Tarball | 3.3 |
| .TAR.MD5 | Android System File | 3.8 |
| .TAR.XZ | XZ Compressed Tar Archive | 4.1 |
| .TAR.Z | Zipped Tarball File | 2.7 |
| .TARDIST | TAR Distribution Archive | 3.0 |
| .TARGA | Targa Graphic | 3.1 |
| .TARGETS | MSBuild Targets File | 3.7 |
| .TASPROJ | BizHawk TAStudio Project | 1.5 |
| .TAX | TurboTax Tax Return | 2.0 |
| .TAX10 | TurboTax 2010 Tax Return File | 1.5 |
| .TAX11 | TurboTax 2011 Tax Return File | 2.0 |
| .TAX12 | TurboTax 2012 Tax Return File | 2.0 |
| .TAX13 | TurboTax 2013 Tax Return File | 3.3 |
| .TAX15 | TurboTax 2015 Tax Return File | 2.0 |
| .TAX16 | TurboTax 2016 Tax Return File | 2.3 |
| .TAX17 | TurboTax 2017 Tax Return File | 3.0 |
| .TAX18 | TurboTax 2018 Tax Return File | 2.0 |
| .TAX19 | TurboTax 2019 Tax Return File | 2.0 |
| .TAX20 | TurboTax 2020 Tax Return File | 2.0 |
| .TAX2008 | TurboTax 2008 Tax Return | 3.0 |
| .TAX2009 | TurboTax 2009 Tax Return | 3.8 |
| .TAX2010 | TurboTax 2010 Tax Return | 4.0 |
| .TAX2011 | TurboTax 2011 Tax Return | 2.8 |
| .TAX2012 | TurboTax 2012 Tax Return | 4.3 |
| .TAX2013 | TurboTax 2013 Tax Return | 3.1 |
| .TAX2014 | TurboTax 2014 Tax Return | 3.8 |
| .TAX2015 | TurboTax 2015 Tax Return | 3.3 |
| .TAX2017 | TurboTax 2017 Tax Return | 3.2 |
| .TAX2018 | TurboTax 2018 Tax Return | 3.3 |
| .TAX2019 | TurboTax 2019 Tax Return | 2.8 |
| .TAX2020 | TurboTax 2020 Tax Return | 2.8 |
| .TAX2021 | TurboTax 2021 Tax Return | 3.3 |
| .TAX2022 | TurboTax 2022 Tax Return | 3.8 |
| .TAX2023 | TurboTax 2023 Tax Return | 3.0 |
| .TAX2024 | TurboTax 2024 Tax Return | 4.0 |
| .TAX21 | TurboTax 2021 Tax Return File | 3.0 |
| .TAZ | Tar Zipped File | 3.9 |
| .TB | Tabbery Tab File | 3.2 |
| .TB | TurboBuilder Project | 3.0 |
| .TBC | Time-base Corrected Video | 3.7 |
| .TBD | Visual Studio Toolbox Data File | 3.4 |
| .TBD | Apple Xcode Text-based Definition File | 3.3 |
| .TBK | ToolBook File | 3.2 |
| .TBL | StarCraft Information Table | 3.9 |
| .TBM | Toribash Mod File | 4.3 |
| .TBN | Kodi Thumbnail Image | 4.2 |
| .TBP | Tekla BIMsight Project | 2.7 |
| .TBP | Autodesk Topobase File | 2.0 |
| .TBS | TuneUp Utilities Boot Screen | 2.8 |
| .TBX | ArcGIS for Desktop Toolbox File | 3.3 |
| .TBX | TermBase eXchange File | 3.5 |
| .TBZ | Bzip Compressed Tar Archive | 4.0 |
| .TC | TrueCrypt Volume | 3.4 |
| .TC | Tellico Collection File | 3.2 |
| .TC2 | TurboCAD 2D Mac Drawing | 3.7 |
| .TC3 | TurboCAD 2D/3D Mac Drawing | 3.0 |
| .TCC | TimeCalc Classic Data File | 3.9 |
| .TCC | C++ Source Code File | 3.3 |
| .TCCFGEXTENDER | TestComplete Project Suite Settings File | 2.0 |
| .TCD | TurboCAD Mac Deluxe Drawing | 3.4 |
| .TCD | Technobox CAD Drawing | 3.0 |
| .TCL | Tcl Script | 3.3 |
| .TCLOGS | TestComplete Log Configuration File | 3.0 |
| .TCLS | TestComplete Configuration File | 3.3 |
| .TCM | TurboCAD Mac Drawing | 3.3 |
| .TCN | Techne Model File | 3.6 |
| .TCO2 | TI-Nspire CX II Operating System File | 2.0 |
| .TCP | TurboCAD Mac Pro Drawing | 2.7 |
| .TCP | Tally Compiled Program File | 3.8 |
| .TCR | Psion Series 3 eBook File | 3.3 |
| .TCR | TouchMagix Creative Suite Published File | 1.3 |
| .TCT | TurboCAD Drawing Template | 4.3 |
| .TCVP | TCVP Ransomware Encrypted File | 3.0 |
| .TCW | TurboCAD Drawing File | 2.8 |
| .TCX | Training Center XML File | 2.8 |
| .TCX | TestComplete Script Extension Package | 3.2 |
| .TCX | TurboCAD 3D Model Text File | 2.5 |
| .TD | Target Definition File | 2.0 |
| .TD | Thunder Incomplete Download File | 3.8 |
| .TD6 | RollerCoaster Tycoon Track Design File | 4.0 |
| .TDA | Palm To-Do File | 2.2 |
| .TDA | Java Application Thread Dump | 2.0 |
| .TDA3MT | DivX Author Template File | 3.0 |
| .TDB | Android Thumbnail Cache | 4.1 |
| .TDB | eBay Turbo Lister Backup File | 3.4 |
| .TDCK | Shopee Cookies File | 3.3 |
| .TDE | Tableau Data Extract File | 3.3 |
| .TDESKTOP-THEME | Telegram Desktop Theme | 3.8 |
| .TDF | Guide Text Definition File | 2.5 |
| .TDF | Xserve Test Definition File | 2.2 |
| .TDF | Title Definition Format File | 3.5 |
| .TDL | Tab Delineated Format File | 3.8 |
| .TDL | ToDoList Tasklist File | 3.3 |
| .TDL | MathType Translator Definition Language | 3.9 |
| .TDM | LabVIEW Binary Measurement File | 2.5 |
| .TDMS | Technical Data Management Streaming File | 3.9 |
| .TDS | Turbo Debugger Symbols File | 2.7 |
| .TDS | Adobe LiveCyle Designer Template | 3.1 |
| .TDT | THOR Data Tree File | 3.2 |
| .TDT | FirstBreak Concrete Test File | 4.0 |
| .TDT | Sim Tower Game File | 4.0 |
| .TDT | AVCHD Thumbnail File | 3.3 |
| .TDZ | Drobo Firmware File | 3.5 |
| .TE | Textease CT Database File | 4.3 |
| .TE3 | WinTrack Object File | 3.0 |
| .TEACHER | SMART Response Teacher Database File | 4.1 |
| .TEC | TECkit Compiled Mapping File | 3.8 |
| .TED | Alamo Map File | 3.5 |
| .TEE | TeeChart Template | 3.4 |
| .TEF | TablEdit Tablature | 3.1 |
| .TEMP | Temporary (Temp) File | 3.3 |
| .TEMPLATE | Pages Template | 3.4 |
| .TEMX | Cemetery Registry Database File | 4.0 |
| .TER | Terragen Terrain File | 2.9 |
| .TERMINAL | Terminal Settings File | 2.8 |
| .TERRN | Rigs of Rods Terrain File | 3.5 |
| .TERRN2 | Rigs of Rods Terrain 2 File | 3.3 |
| .TES | Elder Scrolls or Fallout 4 Relative Save Data | 2.0 |
| .TESTRUNCONFIG | Visual Studio Test Run Configuration File | 3.0 |
| .TESTSETTINGS | Visual Studio Test Settings File | 3.7 |
| .TET | Textease CT Template | 2.0 |
| .TET | Godot Engine Script Editor Theme | 4.0 |
| .TEX | LaTeX Source Document | 3.7 |
| .TEX | Texture File | 3.3 |
| .TEX.EMZ | Street Fighter IV Texture File | 3.5 |
| .TEXT | Plain Text File | 3.6 |
| .TEXTCLIPPING | Mac OS X Text Clipping File | 3.5 |
| .TEXTEXPANDER | TextExpander Settings File | 2.6 |
| .TEXTEXPANDERSETTINGS | TextExpander Settings File | 2.8 |
| .TEXTFACTORY | BBEdit Text Factory | 3.0 |
| .TEXTURE | Trainz Auran Texture File | 4.2 |
| .TEXTURE | Diesel Engine Game Texture File | 2.9 |
| .TEXTURELIBRARY | Painter Texture Library | 2.0 |
| .TEXTY | Texty Notepad Text Document | 2.0 |
| .TFA | TreeSoft CashFlow Analysis Data File | 2.1 |
| .TFC | Unreal Engine 3 Texture File Cache | 3.9 |
| .TFD | Tape Format Requirements Document | 2.5 |
| .TFIL | Blizzard Software Update File | 4.1 |
| .TFM | TeX Font Metric File | 3.2 |
| .TFRD | Tape Image Format Requirements Document | 3.9 |
| .TFRPROJ | theFrame Project File | 3.5 |
| .TFW | World File for TIFF | 3.0 |
| .TFX | Pro Tools Eleven Rack Plugin Preset File | 2.5 |
| .TG | TuxGuitar Document | 4.0 |
| .TG4 | Tiled Group 4 Raster Image File | 3.8 |
| .TGA | Targa Graphic | 4.1 |
| .TGC | Terragen Node Clip File | 3.0 |
| .TGD | Terragen Project File | 4.4 |
| .TGF | Trivial Graph Format File | 3.5 |
| .TGI | TowGeom Input File | 3.0 |
| .TGO | Terragen Object File | 2.0 |
| .TGP | Terragen Plugin | 4.2 |
| .TGS | Telegram Animated Sticker File | 3.6 |
| .TGZ | Gzipped Tar File | 3.3 |
| .THE | Microsoft Plus! Theme File | 3.4 |
| .THEATER | iMovie Theater File | 3.6 |
| .THEME | Microsoft Plus! Desktop Theme | 4.1 |
| .THEME | GTK Theme Index File | 3.1 |
| .THEME | Comodo Theme File | 3.1 |
| .THEMEPACK | Windows 7 Theme Pack | 4.2 |
| .THING | MakerBot Thing File | 4.3 |
| .THL | Total 3D Home Design File | 3.0 |
| .THM | Sony Ericsson Theme File | 3.5 |
| .THM | Video Thumbnail File | 3.5 |
| .THMX | Office 2007 Theme | 3.2 |
| .THP | Wii/GameCube Video File | 2.9 |
| .THUMB | JAlbum Thumbnail File | 3.2 |
| .THUMBDATA | Android Gallery Thumbnail Index | 3.5 |
| .THUMBDATA3--1967290299 | Android Gallery Thumbnail Index | 3.2 |
| .THUMBDATA3-1763508120 | Android Gallery Thumbnail Index | 3.3 |
| .THUMBDATA4--1967290299 | Android Gallery Thumbnail Index | 3.2 |
| .THUMBDATA4-1763508120 | Android Gallery Thumbnail Index | 3.4 |
| .THUMBNAILS | Android Thumbnails Folder | 3.1 |
| .THX | THX Music Tracker Module | 3.5 |
| .TIB | Acronis True Image File | 3.7 |
| .TIBKP | Titanium Backup File | 3.3 |
| .TIBX | Acronis True Image Backup | 3.9 |
| .TIC | TIC-80 Game Cartridge File | 4.2 |
| .TID | AVCHD Thumbnail File | 1.5 |
| .TID | TiddlyWiki Tiddler | 2.0 |
| .TIE | CrossTie Installer File | 3.0 |
| .TIF | Tagged Image File | 3.5 |
| .TIF | GeoTIFF Image | 3.2 |
| .TIFF | Tagged Image File Format | 3.8 |
| .TIG | TI Connect Backup File | 3.7 |
| .TIGER | Tomb Raider Game Data Archive | 3.4 |
| .TILT | Tilt Brush Sketch | 4.0 |
| .TIM | PlayStation Texture Image Map | 1.7 |
| .TIM | The Incredible Machine Level | 3.7 |
| .TIM | Vixen Timed Sequence File | 2.8 |
| .TIMELINE | Timeline Data File | 4.0 |
| .TIMER | Systemd Unit Configuration File | 4.0 |
| .TINI | Chrome OS Crostini Backup | 3.5 |
| .TIP | TuneUp Utilities Icon Package | 3.3 |
| .TIPA | TrollStore IPA File | 3.4 |
| .TIPROGRAM | TI-Basic Program File | 3.3 |
| .TIS | True Image Script | 2.5 |
| .TIVO | TiVo Video File | 3.5 |
| .TIX | DivX Video Download Activation File | 3.6 |
| .TJP | TaskJuggler Project File | 3.5 |
| .TJP | Tiled JPEG File | 3.0 |
| .TK | Tk Script | 3.9 |
| .TK3 | TK3 Multimedia eBook | 4.0 |
| .TKFL | TKLinks Saver Favorite Links | 2.0 |
| .TL5 | Timeliner 5 File | 4.0 |
| .TLB | OLE Type Library | 3.1 |
| .TLB | VAX/VMS Text Library | 3.6 |
| .TLC | The Logo Creator File | 3.0 |
| .TLD | Tag Library Descriptor File | 3.0 |
| .TLDR | tldraw Drawing | 3.8 |
| .TLG | QuickBooks Transaction Log File | 3.8 |
| .TLH | Typelib Generated C/C++ Header File | 3.7 |
| .TLI | Typelib Generated C/C++ Inline File | 3.0 |
| .TLK | BioWare Aurora Engine Talk Table File | 3.5 |
| .TLP | Tulip Software Graph Format File | 1.3 |
| .TLS | TuneUp Utilities Logon Screen | 3.2 |
| .TLX | LG Commercial Television Configuration File | 2.0 |
| .TLX | Standard Dictionary File | 1.5 |
| .TLZMA | LZMA Compressed Tar Archive | 2.0 |
| .TM | Teachable Machine Project | 4.3 |
| .TM | TeXmacs Document | 3.5 |
| .TM2 | PlayStation 2 Texture Image Map | 3.8 |
| .TMAP | TissUUmaps Project | 3.0 |
| .TMB | Timbuktu Pro Connection Document | 2.8 |
| .TMBUNDLE | TextMate Bundle File | 3.0 |
| .TMD | World Machine Datafile | 3.3 |
| .TMD | TextMaker Document | 3.4 |
| .TMD | MySQL Temporary Database File | 2.7 |
| .TMD | PlayStation Game Model File | 3.0 |
| .TMDX | TextMaker Document | 3.8 |
| .TMLANGUAGE | TextMate Language Grammar File | 3.0 |
| .TMO | 3DCG Animation and Pose File | 2.0 |
| .TMOD | Terraria Mod File | 4.0 |
| .TMP | Temporary File | 3.8 |
| .TMPL | BlueJ Default Template | 3.4 |
| .TMR | Apimac Timer Document | 1.5 |
| .TMR | Free Countdown Timer Backup File | 3.0 |
| .TMV | TimeMap Visual | 3.4 |
| .TMV | 8088 Corruption Video | 2.7 |
| .TMV | TextMaker Template | 2.5 |
| .TMVT | TimeMap Template | 1.5 |
| .TMVX | TextMaker Document Template | 3.6 |
| .TMX | Translation Memory Exchange File | 3.8 |
| .TMX | Tiled 2D Tile Map | 3.7 |
| .TMZIP | Theme Manager Zip File | 4.0 |
| .TN | LG Phone Image | 3.6 |
| .TNE | Manga Studio Tone File | 3.0 |
| .TNEF | Transport Neutral Encapsulation Format | 3.7 |
| .TNL | Super Mario Maker Course Thumbnail | 4.0 |
| .TNS | TI-Nspire Document | 3.0 |
| .TNSP | TI-Nspire PublishView Document | 2.8 |
| .TNZ | OpenToonz Scene | 3.3 |
| .TOAST | Toast Disc Image | 3.8 |
| .TOC | Eudora Table of Contents | 3.6 |
| .TOC | World of Warcraft Add-on Table of Contents File | 2.5 |
| .TOC | PSP Custom Audio Track | 4.1 |
| .TOC | Brasero Table of Contents File | 3.3 |
| .TOD | JVC Everio Video Capture File | 2.7 |
| .TOP | TopSolid Design Document | 2.3 |
| .TOPC | TopicCrunch Project File | 4.0 |
| .TOPPRJ | TopSolid Project | 2.4 |
| .TOPVIW | TopSolid'Viewer Document | 3.3 |
| .TOR | Star Wars: The Old Republic Asset File | 4.2 |
| .TORCHDOWNLOAD | Torch Partially Downloaded File | 3.2 |
| .TORRENT | BitTorrent File | 4.2 |
| .TOTALSBACKUP | Totals Database Backup File | 3.7 |
| .TOTALSDB | Totals Database File | 3.6 |
| .TOTALSLAYOUT | Totals Invoice Layout File | 1.5 |
| .TOTALSSYNCDB | Totals Synchronized Database File | 2.5 |
| .TP | Beyond TV Transport Stream File | 3.5 |
| .TP0 | Mascom PVR Video File | 2.9 |
| .TPAC | Mount & Blade II Game Data Archive | 2.9 |
| .TPARK | ThemePark Project File | 3.7 |
| .TPB | GROMACS Binary Input File | 2.0 |
| .TPC | Topic Connection Placeholder | 3.0 |
| .TPD | Cyberlink TOD Video File | 3.2 |
| .TPD | TreePad 7 Database File | 2.8 |
| .TPF | Transit NXT Pack Translation File | 3.3 |
| .TPF | SPSS Text Wizard Document | 4.1 |
| .TPF | TexMod Package File | 4.1 |
| .TPI | EDIUS Plugin File | 4.3 |
| .TPK | Tizen Package | 3.9 |
| .TPKEY | TexturePacker License Key File | 2.2 |
| .TPL | Document Template | 3.7 |
| .TPL | Adobe Photoshop Tool Presets File | 3.4 |
| .TPL | Canvas Template | 3.1 |
| .TPL | PrestaShop Template File | 3.3 |
| .TPL | Wii Image File | 3.7 |
| .TPL | Phorum Template | 3.8 |
| .TPL | HTTP File Server Template | 3.9 |
| .TPM | Trusted Platform Module Password File | 3.0 |
| .TPM | Transformation Parameters Model File | 3.8 |
| .TPR | TMPGEnc Project File | 3.0 |
| .TPS | TexturePacker Sprite Sheet File | 2.5 |
| .TPS | Clarion TopSpeed Data File | 3.1 |
| .TPS | Multi Channel Measurement File | 3.7 |
| .TPS | Bryce Tree Shape File | 2.7 |
| .TPSR | TeamViewer Pilot Session Report File | 4.2 |
| .TPU | Turbo Pascal Unit | 3.7 |
| .TPX | DeLorme Topo Project File | 2.3 |
| .TPZ | Kindle Topaz eBook File | 4.0 |
| .TPZ | Godot Engine Export Template Archive | 4.1 |
| .TQS | Trivia Quiz Shell Program File | 4.0 |
| .TR | TomeRaider 2 eBook File | 3.6 |
| .TR3 | TomeRaider eBook File | 3.0 |
| .TRA | WinTrack Railroad Track File | 3.4 |
| .TRACE | VMware ThinApp Trace Log File | 3.3 |
| .TRACE | TRACES 3D Scene | 4.0 |
| .TRAINEDDATA | Tesseract OCR Model | 4.2 |
| .TRAK | Traktor Content Pack File | 3.7 |
| .TRANSMITSERVERS | Transmit Servers List | 3.0 |
| .TRASH | ChromeOS Trash Storage | 3.0 |
| .TRASHES | macOS USB Flash Drive Trash Folder | 2.9 |
| .TRASHINFO | Linux Trash Metadata File | 3.0 |
| .TRASH_DATABASE | Files by Google Trash Database | 3.2 |
| .TRC | Oracle Trace File | 3.4 |
| .TRC | CTrace Trace File | 2.0 |
| .TRC | SQL Server Trace File | 4.0 |
| .TRD | TrID Definitions Package | 3.7 |
| .TREC | TechSmith Recording File | 3.6 |
| .TRELBY | Trelby File | 3.2 |
| .TRES | Godot Engine Text Resource File | 4.2 |
| .TRF | TorrentRover File | 3.0 |
| .TRF | Smaart Transfer Function File | 3.0 |
| .TRG | TriggerReactor Script | 3.5 |
| .TRI | FaceGen Polygonal Model File | 3.8 |
| .TRI | Triangle Mesh File | 2.7 |
| .TRIM.NDS | Trimmed Nintendo DS Game ROM | 3.5 |
| .TRK | CompeGPS Land Track File | 3.8 |
| .TRK | Finale Track-to-Staff Mapping File | 3.0 |
| .TRK | Pacific Fighters Offline Track File | 2.0 |
| .TRM | FTR Media File | 2.6 |
| .TRM | Oracle Trace Map File | 4.3 |
| .TRN | SQL Server Transaction Log Backup File | 3.0 |
| .TRP | HD Video Transport Stream | 3.8 |
| .TRS | WinTrack Railroad Track Text File | 3.3 |
| .TRS | Rosetta Stone Language Data File | 2.5 |
| .TRS | Linear Saw Component Information Archive | 2.3 |
| .TRUCK | Rigs of Rods Vehicle Definition File | 3.9 |
| .TRX | Visual Studio Test Results File | 4.1 |
| .TRX | PASSOLO Translation List File | 4.0 |
| .TRX | Firmware Image File | 4.1 |
| .TRX | WebAuthorize Batch File | 3.0 |
| .TRX_DLL | Windows Startup File | 3.8 |
| .TS | Video Transport Stream File | 3.6 |
| .TS | Qt Translation Source File | 2.8 |
| .TS | TypeScript File | 4.0 |
| .TS4SCRIPT | The Sims 4 Script Archive | 4.2 |
| .TSC | TINA Design File | 3.2 |
| .TSCDF | TechSmith Camtasia Device Frame File | 2.0 |
| .TSCN | Godot Engine Text Scene File | 4.3 |
| .TSCPROJ | TechSmith Camtasia Project | 4.2 |
| .TSF | Strater Template File | 3.5 |
| .TSI | Traktor Settings File | 4.2 |
| .TSK | Top Silkscreen File | 2.0 |
| .TSL | Tracker Status Log | 3.4 |
| .TSM | TwinCAT System Manager Configuration File | 3.0 |
| .TSP | Digital TV DVR Recording | 3.3 |
| .TSP | TrueSpeech Audio File | 3.5 |
| .TSP | Keithley Instruments TSP Script | 3.5 |
| .TSPEED | TyperSpeed Sepia Settings File | 2.0 |
| .TSPROJ | ToonSquid Project | 3.3 |
| .TSR | Tracker Status Report | 3.5 |
| .TSR | TIFF Simple Rare File | 1.7 |
| .TST | TestPoint Test File | 3.4 |
| .TST | TagScanner Text Transform Script | 2.9 |
| .TSTREAM | SwarmPlayer Streaming Torrent | 3.3 |
| .TSV | Tab-Separated Values File | 3.6 |
| .TSV | Digital Receiver Video Recording | 3.5 |
| .TSX | React TypeScript File | 4.0 |
| .TSZ | Trillian Skin | 3.5 |
| .TT | Visual Studio Text Template | 4.0 |
| .TT10 | TurboTax Canada 2010 Tax Return | 2.8 |
| .TT11 | TurboTax Canada 2011 Tax Return | 3.0 |
| .TT12 | TurboTax Canada 2012 Tax Return | 2.5 |
| .TT13 | TurboTax Canada 2013 Tax Return | 2.0 |
| .TT14 | TurboTax Canada 2014 Tax Return | 2.2 |
| .TT15 | TurboTax Canada 2015 Tax Return | 2.6 |
| .TT16 | TurboTax Canada 2016 Tax Return | 3.0 |
| .TT17 | TurboTax Canada 2017 Tax Return | 2.0 |
| .TT18 | TurboTax Canada 2018 Tax Return | 2.3 |
| .TT19 | TurboTax Canada 2019 Tax Return | 2.0 |
| .TT2 | Microsoft Temporary Font Installation File | 4.3 |
| .TT20 | TurboTax Canada 2020 Tax Return | 4.3 |
| .TT2012STATE | TurboTax 2012 State Tax Form | 4.0 |
| .TT2013STATE | TurboTax 2013 State Tax Form | 3.0 |
| .TT2014STATE | TurboTax 2014 State Tax Form | 2.0 |
| .TT2015STATE | TurboTax 2015 State Tax Form | 1.7 |
| .TT2016STATE | TurboTax 2016 State Tax Form | 2.0 |
| .TT2017STATE | TurboTax 2017 State Tax Form | 2.0 |
| .TT23 | TurboTax Canada 2023 Tax Return | 3.0 |
| .TT24 | TurboTax Canada 2024 Tax Return | 4.0 |
| .TTA | True Audio File | 2.6 |
| .TTARCH | Telltale Games Archive | 4.0 |
| .TTBK | Canadian TurboTax 2010 Backup File | 2.0 |
| .TTC | TrueType Font Collection | 3.5 |
| .TTD | Tinytag Explorer Data File | 3.5 |
| .TTE | Private Character Editor File | 3.3 |
| .TTF | TrueType Font | 3.7 |
| .TTK | Catalyst Translation Toolkit | 3.8 |
| .TTKGP | TatukGIS Project File | 3.0 |
| .TTL | AGT Game Title File | 1.7 |
| .TTMD | Trail Tracker Trail Map | 3.0 |
| .TTML | Timed Text Markup Language Subtitles File | 4.1 |
| .TTR | TETR.IO Replay | 4.5 |
| .TTRM | TETR.IO Multiplayer Replay | 4.2 |
| .TTS | ToolBook Translation System File | 2.6 |
| .TTSKEY | Tech Tool Store License File | 2.0 |
| .TTX | Trados TagEditor File | 4.0 |
| .TTXT | MPEG-4 Timed Text Subtitles File | 2.8 |
| .TU | Turing Source File | 2.5 |
| .TUR | Turing Program Source File | 3.5 |
| .TVC | Turbo View & Convert Batch Presets File | 2.8 |
| .TVDB | TreeView Database | 2.0 |
| .TVDB | Apple TV Database | 4.0 |
| .TVJ | TrueView Job Ticket | 2.5 |
| .TVLAYER | mimoLive TV Layer | 3.3 |
| .TVM | TV3D Model | 3.2 |
| .TVM | Tribes: Vengeance Map | 1.3 |
| .TVPI | TitanTV Television Listing File | 2.6 |
| .TVRECORDING | BoinxTV TV recording | 3.0 |
| .TVS | TeamViewer Video Session File | 3.2 |
| .TVSHOW | mimoLive Show | 3.7 |
| .TVTEMPLATE | mimoLive Template | 3.0 |
| .TVVI | TitanTV Television Listing File | 2.8 |
| .TWB | Tableau Workbook File | 3.1 |
| .TWBX | Tableau Packaged Workbook | 3.3 |
| .TWC | TTWin Configuration File | 2.7 |
| .TWH | Task Wheel Project File | 3.0 |
| .TWIG | Twig Template | 3.7 |
| .TWM | theWord Module | 3.7 |
| .TWT | Carmageddon II Game Data | 3.3 |
| .TWZ | theWord Compressed Archive Module | 2.0 |
| .TWZIP | theWord Compressed Archive Module | 2.0 |
| .TXA | Midas ViewPoint Text Array List | 3.0 |
| .TXD | Game Texture Dictionary | 4.2 |
| .TXF | Transit XV Pack Translation File | 2.9 |
| .TXN | MySpaceIM Conversation Log File | 3.5 |
| .TXT | Plain Text File | 3.7 |
| .TXW | Yamaha TX16W Audio File | 2.4 |
| .TXZ | XZ Compressed Tar Archive | 3.0 |
| .TX_ | Compressed Text File | 3.8 |
| .TYP | Typst Source Document | 4.0 |
| .TYPEIT4ME | TypeIt4Me Clippings File | 2.4 |
| .TYSET | Typinator Set File | 2.7 |
| .TZ | Zipped Tar Archive | 3.0 |
| .TZARC | Trainz Archive | 2.8 |
| .TZX | ZX Spectrum Tape Image File | 3.3 |
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