T

File extensions starting with the letter T...

  .T??  Ingres Table/Index File (?? = Hex 00 to FF)
  .T2K  Teach2000 Document
  .T2T  Sonata CAD Modelling File
  .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.)
  .TAB  Guitar Tablature File
        MapInfo Table
  .TAG  Dataflex Query Tag Name
  .TAH  Turbo Assembler Help File
  .TAI  INMOS Transputer Development System Occam Analyse Info
  .TAL  Adobe TypeAlign Text Illustration File
  .TAM  Tame Program Settings
  .TAO  IsoBuster File
  .TAR  Compressed Archive File
  .TAX  Turbotax File
  .TAZ  TAR.Z Compressed File
  .TB1  Turbo C Font
  .TB2  Turbo C Font
  .TBK  Memo Backup (database programs)
        Asymetrix Toolbook
  .TBL  Adobe Pagemaker Import Mapping Table
  .TC   Borland Configurations File
  .TCH  Borland Help File
  .TCI  INMOS Transputer Development System Occam Configuration Info
  .TCL  TCL/TK Language Script
  .TCM  INMOS Transputer Development System Occam Comment Text File
  .TD   Turbo Debugger Configurations File
  .TDB  Thumbs Plus Database
  .TDF  Trace Definition File
        Typeface Definition File (for fonts)
  .TDH  Turbo Debugger Help File
  .TDK  Turbo Debugger Keyboard Record
  .TDO  Compressed File
  .TDP  Serif DrawPlus Thumbnail
  .TDS  Turbo Debugger Symbol Table
  .TEA  Tea Template Source File
  .TEM  Icon Author Template
        Turbo Editor Macro Language
  .TEX  TeX
        LaTeX File
        Mackichan Scientific Notebook File
        Texture File
  .TF   Turbo Profiler Configuration File
  .TFA  Turbo Profiler Area File
  .TFH  Turbo Profiler Help File
  .TFM  Tagged Font Metric
  .TFS  Turbo Profiler Statistic
  .TG4  CCITT Group 4 Fax
  .TGA  Truevision Targa Graphic  [Viewer]
  .TGH  TrueGas Host File
  .TGZ  UNIX Tar File Zipped
  .THB  Bitmap Graphic
  .THD  Thread
  .THEME  Microsoft Plus! Theme File
  .THM  MS Clipart Gallery Database
        Serif DrawPlus Theme
  .THN  Graphics Workshop for Windows Thumbnail
  .THP  TurboTax-related File
  .THS  WordPerfect Thesaurus
  .TIF  Tagged Image Format File  [Viewer] [SwiftView]
  .TIFF  Tagged Image Format File  [Viewer] [SwiftView]
  .TIG  Tiger Government Map File
  .TJF  VAXTPU Backup File (VAXTPU is default OpenVMS editor)
  .TLB  Remote Automation Truelib Files
        OLE Type Library
        Visual C++ Type Library
  .TLD  Trellix File
  .TLE  NASA Two-Line Element Set
  .TLP  MS Project Timeline File
  .TLT  Trellix Web Design File
  .TLX  Telex
        Trellix Data File
  .TMF  WordPerfect Tagged Font Metric File
  .TMO  Zortech C++ Global Optimizer Output File
  .TMP  Temporary File
  .TMS  Telemate Script
  .TOC  Eudora Table Of Contents
  .TOL  Kodak Photoenhancer
  .TOP  INMOS Transputer Development System Occam Top Level File
  .TP   Turbo Pascal Configuration File
  .TP3  Harvard Template (Harvard Graphics taken over by Serif)
  .TPH  Turbo Pascal Help File
  .TPL  Turbo Pascal Resident Units
        Harvard Template (Harvard Graphics taken over by Serif)
        fKey Template Designer Template File
        CakeWalk Audio Template File
        DataCAD Template File
        Canvas 7 Template
  .TPP  Turbo Pascal Protected Mode Units
        Teleport Pro Project
        TypePlus File
  .TPU  Turbo Pascal Unit
        VAXTPU Command File (VAXTPU is default OpenVMS editor)
  .TPW  Turbo Pascal Unit
  .TR5  Tree Professional File
  .TRE  PC Tools Directory Tree
  .TRK  Kermit Script File
  .TRM  Terminal Settings (various)
        TRiM High-compression Lossless 8 to 32 bit Truecolor Image File
  .TRN  Quattro Translation
        Adobe Pagemaker File
        MKS Source Integrity Project Log
  .TRP  Tripmaker File
  .TRT  Team Sports Scheduling System Report Template
  .TS   Tune Smithy File
  .TSP  Windows Telephony Service Provider
  .TSR  INMOS Transputer Development System Occam Program Source
  .TSS  Team Sports Scheduling System Project File
  .TST  WordPerfect Printer Test File
        Test File
  .TSX  Team Sports Scheduling System XML Project File
  .TTC  TrueType Compressed Font
  .TTF  TrueType Font
  .TTK  Corel Catalyst Translation Tool Kit
  .TTL  Tera Term Macro File
  .TUB  PaintShop Pro Tube File
  .TUT  Tutorial
  .TWF  TabWorks File
  .TWG  ThatWaltGuy Web Server File
  .TWW  Tagwrite Template
  .TX8  DOS Text File
  .TXB  Descent/D2 Encoded Briefing File
  .TXC  Urban Chaos Game File
  .TXM  DATAIR Pension Reporter Data File
  .TXT  Text File
  .TXW  Yamaha TX16W Wave Files
  .TXX  DataPerfect Text Storage
  .TYM  PageMaker Time Stamp
  .TZ   Compressed File
        Ingres Time Zone File