| .TABLE1 | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TABLES | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TAL | Adobe Systems Incorporated | Szöveg fájlok | Adobe TypeAlign Text Illustration File | Unknown Software | Unknown Developer |
| .TALK | Unknown Developer | Adat fájlok | Text To Speech File | Unknown Software | Unknown Developer |
| .TALK2 | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TCO | Unknown Developer | Adat fájlok | T9000 Object Module | Unknown Software | Unknown Developer |
| .TDT | Sony | Videó fájlok | AVCHD Thumbnail File | Unknown Software | Unknown Developer |
| .TEASERS2 | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TEBK | Unknown Developer | Szokatlan fájlok | Unknown File Type | Unknown Software | Unknown Developer |
| .TECH | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TELL | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TEST | Unknown Developer | Adat fájlok | Testing File | Unknown Software | Unknown Developer |
| .TESTING | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TFB | Unknown Developer | Szokatlan fájlok | Unknown Apple II Data File | Unknown Software | Unknown Developer |
| .TFR | LucasArts Entertainment Company, LLC | Játék fájlok | TIE Fighter Pilot File | Unknown Software | Unknown Developer |
| .TG1 | Unknown Developer | Szokatlan fájlok | On Target Project File | Unknown Software | Unknown Developer |
| .TGR | The U.S. Census Bureau | GIS fájlok | Tiger Line Data | Unknown Software | Unknown Developer |
| .THW | Unknown Developer | Szokatlan fájlok | Unknown File Type | Unknown Software | Unknown Developer |
| .TICKET | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TID | Sony | Videó fájlok | AVCHD Thumbnail File | Unknown Software | Unknown Developer |
| .TIK | Unknown Developer | Fejlesztői fájlok | Script File For Game Textures | Unknown Software | Unknown Developer |
| .TILE | XnSoft | Raszterkép fájlok | Eclipse Image | Unknown Software | Unknown Developer |
| .TIPS | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TJL | Unknown Developer | Háttér fájlok | VAXTPU Editor Backup File | Unknown Software | Unknown Developer |
| .TJT | Unknown Developer | Szokatlan fájlok | Unknown File Type | Unknown Software | Unknown Developer |
| .TJZ | Unknown Developer | Szokatlan fájlok | Unknown File Type | Unknown Software | Unknown Developer |
| .TKI | Unknown Developer | Szokatlan fájlok | Mime: Application/x-tkined | Unknown Software | Unknown Developer |
| .TNL | Unknown Developer | 3D kép fájlok | Thumbnail Image Format | Unknown Software | Unknown Developer |
| .TO | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TRACKS | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TRANSFERIR | Unknown Developer | Szokatlan fájlok | Unknown File Type | Unknown Software | Unknown Developer |
| .TRAVEL | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TRIAL | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TRIF | Tiling Task Group (TTG) | Raszterkép fájlok | Tiled Raster Interchange Format | Unknown Software | Unknown Developer |
| .TRUETYPE | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TSH | CENiX, Inc. | Hang fájlok | Cenix Audio | Unknown Software | Unknown Developer |
| .TTO | Unknown Developer | Szokatlan fájlok | Client Access Data Specification File | Unknown Software | Unknown Developer |
| .TVLINK | Unknown Developer | Szokatlan fájlok | Uncommon File Extension | Unknown Software | Unknown Developer |
| .TVW | Unknown Developer | Szokatlan fájlok | Uncommon File Extension | Unknown Software | Unknown Developer |
| .TVX | Doug Cutting | Szokatlan fájlok | Apache Lucene Term Vector Index File | Unknown Software | Unknown Developer |
| .TVZ | Unknown Developer | Szokatlan fájlok | Uncommon File Extension | Unknown Software | Unknown Developer |
| .TWN | Unknown Developer | Beállítás fájlok | Scanner Settings File | Unknown Software | Unknown Developer |
| .TWO | Apple | Adat fájlok | Golden Orchard Apple II CD Rom File | Unknown Software | Unknown Developer |
| .TXG | ESRI | Szokatlan fájlok | Georeference Subobject File | Unknown Software | Unknown Developer |
| .TXM | CFP Software Limited | Adat fájlok | CFPwinMan Document File | Unknown Software | Unknown Developer |
| .TYP | Unknown Developer | Szokatlan fájlok | Thumbs32 File | Unknown Software | Unknown Developer |
| .TZG | Unknown Developer | Szokatlan fájlok | Uncommon File Extension | Unknown Software | Unknown Developer |
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