BTF-Basi-Office-TypeFace-document-file
BTF-Brother-scanner-file
BTFL-Desktop-DB
BTF-Nations-Bank-Check-File
BTG-Binary-TerraGear-FlightGear-scenary-data-Header
BTG-FlightGear-scenery-file
BTH-Bathy-Recorder-Data-File-Jeppesen-Marine-Inc
BTIF-Bank-check-image-and-text-data-Nations-Bank
BTIF-NationsBank-Check-Image-File
BTK-CLwin-Tekton-database
BTL-American-Civil-War-File-Interactive-Magic
BTL-BEATO-Lite-Single-Assessment-Data-Unisys
BTL-Inmos-BooTabLe-File
BTL-INPRISE-Format-Language-Library-Borland-Software-Corporation
BTL-Pok-n-NetBattle-battle-replay-file
BTM-Batch-file-used-by-Norton-Utilities
BTN-buttonFile-File-ButtonWare-Inc
BTN-JustButtons-animated-bitmap-image-format
BTN-Makeover-Button-Buttonware
BTN-Makeover-Button-file
BTOA-Binary-to-ASCII-Encoded-File
BTOA-Binary-to-ASCII-Format
BTO-Baytex-Organix-2001-Language-Kit
BTP-Atari-NeoDesk-batch-takes-parameters-file
BTPC-BTPC-encoded-bitmap-Header
BTPC-BTPC-Encoded-Bitmap-John-Robinson
BTP-MicroDOS-Bit-picture-file
BTR-Database-file-Btrieve-5-1
B-TR-DOS-basic-file-format
BTREE-Mac-OS-HFS-B-tree-File-Apple-Inc
BTS-Creative-Digital-Blaster-Digital-VCR-File
BTSEARCH-BitTorrent-Search-Engine-Specificiation-file
BTSK-HyperCard-Button-Tasks
BTST-Mac-File-Type
BTT-ICQ-Find-Users-File-ICQ-Inc
BTU-BEATO-Unite-Multiple-Assessment-Data-Unisys
BT-Virtual-Terrain-Project-Software
BT-VTBuilder-Binary-Terrain
BT-VTBuilder-Binary-Terrain-v1-x-Header
BTV-Unknown-file-extension
BTW-BarTender-barcode-label
BTW-BarTender-Barcode-Label-Seagull-Scientific-Inc
BTW-Steuer-2001-file
BTW-Steuer2001-File
BTX-BibTeX-Document
BTX-DB-TextWorks-Database-Term-and-Word-Index-Header
BTX-InMagic-database-term-word-index
BTX-SEEDIS-Index
BTY-Railroad-Tycoon-3-Building-PopTop-Software-Inc
BUB-Ipix-Spherical-Panorama
TechTarget file types