Data File Formats Starting with the Letter "B"
| .b | Batch list (APPLAUSE) |
| .b&w | Black and white graphics (atari - mac) |
| .b~k | backup file |
| Mono binary screen image (1st Reader) | |
| .b00 | CD Image Segment file |
| .b16 | PCO Graphic file |
| .b1n | Both mono and color binary screen image (1st Reader) |
| .b1s | Booksmith |
| .b30 | Printer font (JLaser - Cordata) (Ventura Publisher) |
| .b3d | 3D Builder file |
| .b5i | Blindwrite 5 Disk Image file |
| .b5t | Blindwrite 5 Image Information file |
| .b6i | Blindwrite 6 Disk Image file |
| .b6t | Blindwrite 6 Image Information file |
| .b8 | Raw graphics (one byte per pixel) plane two (PicLab) |
| .b_w | Black and white graphics (atari - mac) |
| .bad | Bad file (Oracle) |
| .bag | PMMail Mail Index file |
| OS/2 Netfinity Manager Sysinfo file | |
| AOL Instant Messenger file | |
| .backup | Ad-Aware Reference file |
| .bak | Backup file |
| .bal | Music score (Ballade) |
| .ban | Sierra Print Artist Banner |
| .bar | Horizontal bar menu object file (dBASE Application Generator) |
| .bas | Basic source code file |
| Microsoft Visual Basic class module | |
| .bat | Batch file (DOS) |
| .bb | Database backup (Papyrus) |
| .bba | Settler IV Archive file |
| .bbl | Bibliographic reference (TeX/BibTeX) |
| .bbm | Brush (Deluxe Paint) |
| .bbs | Bulletin Board System announce or text info file |
| .bc! | Bitcomet Incompleted Download file |
| .bcf | ConfigSafe Snapshot index |
| Belarc Advisor Content File | |
| The Sims (Maxis) File | |
| .bch | Batch process object file (dBASE Application Generator) |
| Datafile (Datalex EntryPoint 90) | |
| .bck | Backup |
| .bcm | MS Works Communications file |
| .bcn | Business Card Pro Design |
| .bco | Outline font description (Bitstream) |
| .bcp | Borland C++ makefile |
| .bct | Business Card Designer template |
| .bcw | Environment settings (Borland C++ 4.5) |
| .bde | Borland Database Engine |
| .bdf | Bitmap Distribution Format font file (X11) |
| Datafile (Egret) | |
| .bdm | AVCHD Index file |
| .bdmv | Blu-ray information file |
| .bdr | Border (MS Publisher) |
| .bez | Outline font description (Bitstream) |
| .bf2 | Bradford 2 font |
| .bff | Binary file format |
| .bfm | Font metrics (unix/Frame) |
| .bfs | Tivoli Storage Manager file |
| .bfx | Fax (BitFax) |
| .bga | Bitmap graphics |
| .bgt | Quicken 2002 Internet Common File |
| .bgi | Borland Graphics Interface device driver |
| .bgl | Flight Simulator scenery file |
| .bgt | Quicken 2002 Internet Common File |
| .bib | Bibliography (ASCII) |
| Database - not compatible with TeX format (Papyrus) | |
| Literature database (TeX/BibTeX) | |
| .bic | Civilization III Scenario |
| .bid | BidMaker 2002 file |
| .bif | Binary Image Format b&w graphics (Image Capture board) |
| .bik | BioCharter Profile backup file |
| Bink Game video file | |
| .bin | Binary file |
| .bio | OS/2 BIOS |
| .bip | Free-motion capture files for character studio biped |
| .bit | Bitmap Image |
| Worms Armageddon Imported Map | |
| Worms World Party Imported Map | |
| .bk | Faxbook (JetFax) |
| .bk! | Document backup (WordPerfect for Win) |
| .bk1 | Timed backup file for document window 1 (WordPerfect for Win) |
| .bk2 | Timed backup file for document window 2 (WordPerfect for Win) |
| .bk3 | Timed backup file for document window 3 (WordPerfect for Win) |
| .bk4 | Timed backup file for document window 4 (WordPerfect for Win) |
| .bk5 | Timed backup file for document window 5 (WordPerfect for Win) |
| .bk6 | Timed backup file for document window 6 (WordPerfect for Win) |
| .bk7 | Timed backup file for document window 7 (WordPerfect for Win) |
| .bk8 | Timed backup file for document window 8 (WordPerfect for Win) |
| .bk9 | Timed backup file for document window 9 (WordPerfect for Win) |
| .bkf | Microsoft Backup file |
| .bkg | Background file |
| UWXAFS Binary Format Data file | |
| .bkp | Backup file (Write - TurboVidion DialogDesigner) |
| .bkw | Mirror image of font set (FontEdit) |
| .blb | DreamWorks Resource Archive |
| .bld | Bloadable picture (BASIC) |
| .blend | Blender 3D file |
| .blf | Windows Registry Recovery file |
| Bantec Scanner Driver file | |
| .blg | Binary Performance Log File |
| .blk | Temporary file (WordPerfect for Win) |
| Lightscape Block Library | |
| Alias Wavefront Image | |
| VersaPro Block | |
| .blob | Steam Archive file |
| .blt | Saved AIM Buddy List file |
| Wordperfect for DOS file | |
| .bm | Bitmap graphics |
| .bmf | Corel Image file |
| .bmi | 3ds max Executable |
| .bmk | Help Bookmarks (Windows 3.x) |
| .bmp | Bitmap graphics (PC Paintbrush - many) |
| .bmx | Buzz music file |
| .bnd | Typequick file |
| .bndl | Bundle file |
| .bnk | Adlib instrument bank file |
| .bob | BobDown Downloading Program |
| Bob Raytracer | |
| .bom | MicroSim PCBoard Bill of Materials |
| Orcad Schematic Capture Bill of Materials file | |
| Softshare Delta Business Object Model | |
| .boo | Compressed file ASCII archive created by BOO (msbooasm.arc) |
| .book | Adobe FrameMaker Book |
| HTMLDOC document | |
| .bot | Linkbot file |
| .box | Myriad Jukebox file |
| Notes Mailbox | |
| .bpc | Chart (Business Plan Toolkit) |
| .bpl | Delphi Library |
| .bpt | Bitmap fills file (CorelDRAW) |
| .bqy | BrioQuery file |
| .br | Script (Bridge) |
| .brd | Eagle Layout file |
| .brf | Braille ASCII file |
| .brk | Fax (Brooktrout Fax-Mail) |
| .brn | BornoSoft Bangla2000 (a Bengali word processor) File extension |
| .bro | Tree Professional Broadleaf Creator file |
| .brp | Tree Professional Broadleaf Creator image |
| .brt | Micrografx Picture Publisher file |
| .brx | Multimedia browsing index |
| .bsa | Compressed file archive created by BSARC |
| .bsb | MapInfo Sea Chart |
| SWAT Sub-basin Output file | |
| .bsc | Compressed Apple II file archive created by BINSCII |
| Database (Source Browser) | |
| Pwbrmake object file (MS Fortran) | |
| .bsdl | Boundary Scan Description Language |
| .bsl | BSPlayer Configuration file |
| .bsp | Half-life/TFC/CS Map |
| Quake Map | |
| .bst | BibTeX Style file |
| .bsv | Bluespec System Verilog file |
| .bt! | BitTorrent Partial Download file |
| .btm | Batch To Memory batch file (4DOS) |
| .btn | Buttonware file |
| .bto | Baytex Organix! 2001 Language Kit |
| .btr | Btrieve Database file |
| MS Frontpage-related file | |
| .btx | DB/TextWorks Database Term & Indexes |
| .bud | Quicken Backup |
| .bug | Bugs and Problems |
| .bun | Bundled Audio files |
| .bup | DVD Backup file |
| .but | Button definitions (Buttons!) |
| .buy | Datafile format (movie) |
| .bv1 | Overflow file below insert point in Doc 1 (WordPerfect for Win) |
| .bv2 | Overflow file below insert point in Doc 2 (WordPerfect for Win) |
| .bv3 | Overflow file below insert point in Doc 3 (WordPerfect for Win) |
| .bv4 | Overflow file below insert point in Doc 4 (WordPerfect for Win) |
| .bv5 | Overflow file below insert point in Doc 5 (WordPerfect for Win) |
| .bv6 | Overflow file below insert point in Doc 6 (WordPerfect for Win) |
| .bv7 | Overflow file below insert point in Doc 7 (WordPerfect for Win) |
| .bv8 | Overflow file below insert point in Doc 8 (WordPerfect for Win) |
| .bv9 | Overflow file below insert point in Doc 9 (WordPerfect for Win) |
| .bwa | BlindWrite Disk Image Information file |
| .bwb | Spreadsheet application (Visual Baler) |
| .bwi | Blindread/Blindwrite |
| .bwr | Beware (buglist) (Kermit) |
| .bws | Blindwrite Sub Channel Data File |
| .bwt | Blindread/Blindwrite |
| .bxx | blaxxun Contact |
| .bz2 | Bzip 2 UNIX Compressed file |
