| File extension Name |
extension description |
| .B | Applause Batch List |
| .b | LILO Boot Loader Image |
| .B | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .B | Molconn-Z Format File |
| .B | IRIS Editor Shortened Format File (eurobraille) |
| .B | Modula-3 Base Program |
| .B | Limbo Implementation File |
| .B | Grand Theft Auto III Save File (+ Other Rockstart Games) (Rockstar Games) |
| .B | Brainf*ck Program |
| .B | Befunge Program |
| .B | BASIC Language Source |
| .B!K | Flight Simulator Scenery File (Microsoft Corporation) |
| .B&W | Image Lab |
| .B&W | Atari Black and White Graphics (Atari) |
| .B&W | 1st Reader Mono Binary Screen Image |
| .B02 | ADP Payroll |
| .B1 | Progress Database File (Progress Software Corporation) |
| .B1 | 21st Century Mahjong |
| .B16 | PCO Graphic |
| .B1J | BookJones |
| .B1N | 1st Reader Binary Screen Image |
| .B1S | BookSmith |
| .B2 | Progress Database File (Progress Software Corporation) |
| .B2D | Brutus2D Source Code File (Pewter Software) |
| .B2Z | B2Z dVS Model/Object |
| .B30 | Ventura Publisher Printer Font |
| .B32 | MS-DOS Bcc file |
| .B36 | PDP-10 BLISS-36 Compiler Source |
| .B3D | Blitz3D/Max/Plus Texture or Mesh File (Blitz Research Ltd.) |
| .B3D | Boso View Express Structure Mesh Diagram (Mackoy) |
| .B3D | 3D Builder |
| .B3D | BDE Multipath Movie Digital Viewer |
| .B4 | Helix Nuts and Bolts File |
| .B4S | Winamp 3+ Playlist |
| .B4U | docPointer Visual ReadMe File (docPointer) |
| .B5 | CEDICT Chinese/English Dictionary (Erik E. Peterson) |
| .B5I | IsoBuster CD/DVD Image File (Container) (Smart Projects) |
| .B5I | DAEMON Tools |
| .B5I | BlindWrite Ver. 5 Image File (VSO-Software) |
| .B5S | Numerical Controlled Machine File |
| .B5T | DAEMON Tools |
| .B5T | BlindWrite Ver. 5 Table of Contents File (VSO-Software) |
| .B64 | Base 64 MIME-encoded File |
| .B6I | BlindWrite Ver. 6 Image File (VSO-Software) |
| .B6T | BlindWrite Ver. 6 Table of Contents File (VSO-Software) |
| .B8 | Piclab Raw Graphic File |
| .B8 | PictureMaker Blue Channel Image Data (Cubicomp) |
| .BA | Scifer Archiver and Compression External Archive Format (Senthil Kumar R) |
| .BA$ | MS Compressed BAS Decompress with UNPACK.EXE. |
| .BAB | Babble! Data File (Korenthal Associates, Inc, 230 W 13th St, NYC 10011) |
| .BABAR | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BABER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAC | Backup |
| .BACH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BACHTOLD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BACK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BACKGAMON | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BACKGRND | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BACKGROUND | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BACKPACK | Backpack Word List (Mammoet Software) |
| .BACKUP | pgAdmin Database Backup (pgAdmin Project) |
| .BACKUP | ISAPI Loader Backup of Current ISAPI Application (EGGcentric) |
| .BACKUP | Ad-Aware Reference File (Lavasoft) |
| .BACKUP | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BACLOOP7 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAD | Rime Mailer Address File |
| .BAD | Brutus Application Definition File (HooBie Inc.) |
| .BAD | Oracle BAD File |
| .BADONGO | BaDonGo File Information (BaDonGo.com) |
| .BAF | Infinity Game Engine Script (BioWare Corp.) |
| .BAG | PMMail/2 Mail Index File (V.O.I.C.E. (Virtual OS/2 International Consumer Education)) |
| .BAG | Emperor: Battle for Dune Archive |
| .BAG | PMMail 2000 Mail Index File (Blueprint Software Works) |
| .BAG | AOL 6 Organizer (America Online, Inc.) |
| .BAG | OS/2 Netfinity Manager Sysinfo File |
| .BAG | Bag Archive File |
| .BAG | AOL Instant Messenger (AIM) Buddy List (America Online, Inc.) |
| .BAG | NoX |
| .BAH | Infinity Game Engine (BioWare Corp.) |
| .BAI | BUILD2WIN Add-in (BID2WIN Software Inc.) |
| .BAK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAK | Backup |
| .BAL | BAL Borland Programming Language Source |
| .BAL | Ballade Music Score |
| .BALANCE | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BALL | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BALL2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAM | Bravo! Archived Media (Thought Studios, Inc.) |
| .BAM | Infinity Game Engine Zlib Compressed Animation and Multi-frame Graphics (BioWare Corp.) |
| .BAM | Infinity Game Engine Animation and Multi-frame Graphics (BioWare Corp.) |
| .BAM | OHRRPGCE Music File (Hamster Republic) |
| .BAM | Bob's Adlib Music |
| .BAN | MegaHAL Non-Keyword List (Ai Research) |
| .BAN | Creatacard Banner Project (Broderbund) |
| .BAN | Sierra Print Artist Banner |
| .BAND | GarageBand Song (Apple Inc.) |
| .BANGER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BANJ | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BANK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BANKSW | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BANNER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAR | Age of Mythology |
| .BAR | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAR | dBASE Application Generator Horizontal Menu Object |
| .BAS | CHDK UBASIC Script |
| .BAS | VBDOS Pro 1.0 Source |
| .BAS | BASIC Source Code |
| .BAS | QuickBASIC Extended v7.1 Source |
| .BAS | e.Report Designer Actuate Basic Source (Actuate Corporation) |
| .BAS | HBasic Source Code |
| .BAS2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAS7 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BASE | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .bash | Bash Shell Script |
| .BASIN | Hydrologic Modeling System (HEC-HMS) Basin Model Settings (U.S. Army Corps of Engineers) |
| .BASKETBALL | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BASS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BASS1 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BASS2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BASSD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BASSDRU2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BASSG | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAT | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAT | Batch Processing (Microsoft Corporation) |
| .BATCH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BATH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAU | OpenOffice.org 1.1 Configuration Files (OpenOffice.org) |
| .BAV | AVG The Bat! Add-in (AVG Technologies) |
| .BAV | The Bat! E-mail Client Anti-Virus File (RITLABS) |
| .BAVANT | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BAW | BrainLED AlfaWave Session (BrainLED) |
| .BAY | Kodak/Roper Bayer Picture Sequence |
| .BB | Starfleet Battles DOS Game |
| .BB | Blitz3D/Max/Plus Source Code (Blitz Research Ltd.) |
| .BB | Papyrus Database Backup |
| .bb | gcc -ftest-coverage Basic Block List Data |
| .BB | Art-lantis Billboard Management File (ABVENT) |
| .BB | BrowserBob Project File (BrowserBob weblications) |
| .BB2 | XBBS-OS/2, XGROUP, AV and ZTree Archiver Control File |
| .BBC | Babya Photo Workshop Color Collection (Babya Software Group) |
| .BBC | BBC BASIC for Windows File (R. T. Russell) |
| .BBE | Brainbloom Document Exchange File (Gael Limited) |
| .BBF | ScriptBasic Binary File (ScriptBasic Project Team) |
| .BBF | FRAMES Body Burden Concentration File |
| .bbg | gcc -ftest-coverage Basic Block List Data |
| .BBG | CyberSports for Basketball Game File (CyberSports, Inc.) |
| .BBK | WWTBAM Game Component |
| .bbl | TeX/BibTeX Bibliographic Reference File |
| .BBM | BDBZM (Project BDBZM) |
| .BBM | Deluxe Paint Image File |
| .BBMA | Bonzibuddy |
| .BBNNG | BBN BitGraph Terminal Display Pixel Data (DPD) Sequence Bitmap |
| .BBP | BitBeamer Split File |
| .BBP | Bezier Surface File |
| .BBQ | BitBeamer Transfer Queue File |
| .BBRKPUZZLE | BrainsBreaker Puzzle (Juan Trujillo) |
| .BBRKSAVE | BrainsBreaker Started Puzzle Status (Juan Trujillo) |
| .BBS | FTN Software Hudson-style Messagebase |
| .BBS | Bulletin Board System Text |
| .BBS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BBT | CyberSports for Basketball Team File (CyberSports, Inc.) |
| .BBV | PPLive Cache? (PPLive Inc.) |
| .BBX | BrainBox Neural Net (Neil Fraser) |
| .BBZ | Bitblaze Audio File |
| .BBZ | Line Rider 2 Unbound DRMed Game Executable (inXile entertainment) |
| .BC | Mikmak 203 file |
| .BC | Sierra Print Artist Business Card |
| .BC | BCwin Project Data (Procedimientos-Uno, S.L.) |
| .BC | Low Level Virtual Machine (LLVM) Bytecode (University of Illinois at Urbana-Champaign Computer Science Department) |
| .BC | Low Level Virtual Machine (LLVM) Bytecode (Compressed) (University of Illinois at Urbana-Champaign Computer Science Department) |
| .BC | Big Crunch Compressed File (KaBoom) |
| .BC | BitComet Incomplete Download (BitComet.com) |
| .BC! | BitComet Incomplete Download (BitComet.com) |
| .BC3 | BCC 3 Make File |
| .BC3 | Fiebdc-3 Format File |
| .BCA | Railroad Tycoon 3 Building (PopTop Software Inc.) |
| .BCA | Allplan 2005 Backup Catalog File (Nemetschek A.G.) |
| .BCB3 | BC3 Make File |
| .BCC | C++ File/Makefile (Borland Software Corporation) |
| .BCC | Calendar Creator File (Riverdeep Interactive Learning Limited (Houghton Mifflin Harcourt Learning Technology)) |
| .BCD | Cosmi Business Card Maker |
| .BCD | Turbo Pascal DOS File (Borland Software Corporation) |
| .BCD | Binary Cartographic Data File |
| .BCD | ReaderRom Digital Library Book File (Inc. Reader Rom) |
| .BCD | OfficePrinter Document (Moss Bay Software) |
| .BCF | MyLabel Designer Deluxe Label File (Avanquest Publishing USA, Inc.) |
| .BCF | The Sims 3D Body Mesh File (Electronic Arts (Maxis)) |
| .BCF | Business Card Designer Pro Business Card Design (Belltech Systems, LLC) |
| .BCF | ConfigSafe Snapshot Index |
| .BCH | dBASE Application Generator Batch Process Object |
| .BCH | Datalex Entry Point 90 Data File (Phoenix Software) |
| .BCI | Advisor Computer Profile Report (Belarc) |
| .BCK | Backup |
| .BCK | VMS/VAX BaCKup |
| .BCK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BCKP | Ad-Aware Quarantine File (Lavasoft) |
| .BCL | PDP-10 BCPL Compiler Source |
| .BCM | Compaq Easy Access Keyboard Driver |
| .BCM | PDP-10 Binary Compare - FILCOM Output Showing Differences by Octal Words |
| .BCM | Works Communications File (Microsoft Corporation) |
| .BCMR | BC Framer (Boise Cascade) |
| .BCN | Business Card Pro Design |
| .BCO | Bitstream Fontware |
| .BCO | MicroSim PCBoard Backward Engineering Change Order |
| .BCP | C++ Makefile (Borland Software Corporation) |
| .BCP | Bambalam PHP EXE Compiler/Embedder Project File (Bambalam) |
| .BCP | Business Card Designer Plus Design File (CAM Development) |
| .BCR | map&guide Station List (PTV AG) |
| .BCS | Infinity Game Engine Compiled Script (BioWare Corp.) |
| .BCS | Yamaha Basic Style (Yamaha Corporation of America) |
| .BCS | Brian's Compression Shell (BCS) Image Animation/Video Shell |
| .BCS | Windows95 Browse Information |
| .BCT | Clarion for Windows Backup Dictionary (SoftVelocity) |
| .BCT | Business Card Designer Template |
| .BCW | C++ Version 4.5 Environment Settings (Borland Software Corporation) |
| .BCX | Beam Report Standard Definition File (SYSTEAM) |
| .BCZ | Siemens PLM Software BriefCaseZipfile (Siemens AG) |
| .BD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BD | Solaris Browser Data File (Sun Microsystems, Inc.) |
| .BD1 | X Operations Map Block Locations (Team Mitei) |
| .BD4 | West Point Bridge Designer Ver. 4 Bridge Design |
| .BDB | Works Database File (Microsoft Corporation) |
| .BDB | Blaise Database (Statistics Netherlands) |
| .BDB | CHASE Evaluation and Audit System Executable (Health And Safety Technology And Management Ltd.) |
| .BDBZM | BDBZM (Project BDBZM) |
| .BDC | West Point Bridge Designer |
| .BDC | Lingvo dictionary |
| .BDD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BDE | Pro/ENGINEER Temporary File (PTC) |
| .BDE | Borland Database Engine (Borland Software Corporation) |
| .BDF | Bupdate Binary Update File |
| .BDF | Backup To CD-RW Backup Definition File |
| .BDF | E-Mail Detective Binary Data Fragment (Hot Pepper Technology, Inc.) |
| .bdf | UNIX Font File |
| .BDF | Brother BES-100E Embroidery Software File (Brother Industries, Ltd.) |
| .BDF | TXRDWIN X-ray Diffraction Pattern (Omni Scientific Instruments, Inc.) |
| .BDF | RD Birthday Reminder Data File (Christian Weiske) |
| .BDF | Quartus II Block Design File (Altera Corporation) |
| .BDF | Egret Data File |
| .BDF | Glyph Bitmap Distribution Format (Adobe Systems Incorporated) |
| .BDF | NEi Nastran Bulk Data File (Noran Engineering, Inc.) |
| .BDF | X11 Bitmap Distribution Format |
| .BDF | West Point Bridge Designer |
| .BDF | NuGraf Scene file |
| .BDG | Badge Designer 2000 Photo ID |
| .BDG | BudgetExpress Data File (De Marque Inc.) |
| .BDI | Pro/ENGINEER Temporary File (PTC) |
| .BDIC | Chrome Dictionary File (Google) |
| .BDK | OS/2 Saved SKF Format File (IBM) |
| .BDL | OneSpace Designer Bundle (CoCreate) |
| .BDM | Blaise File (Statistics Netherlands) |
| .BDM | Pro/ENGINEER Temporary File (PTC) |
| .BDMV | Blu-ray Information File (Blu-ray Disc Association) |
| .BDR | Publisher Border (Microsoft Corporation) |
| .BDRUM1 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BDSPROJ | Developer Studio Project File (Borland Software Corporation) |
| .BDT | Lingvo Dictionary |
| .BDT | TAC Browser Script (Swoot) |
| .BDW | Budget For Windows Data File (Snowmint Creative Solutions LLC) |
| .BDX | JavaBib Index File |
| .BDX | BarBack Drink Exchange File |
| .BDX | FUSE Science Pipeline Bad Data File |
| .BE | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEA | Beamer Song File (The Beamer Project) |
| .BEACHBALL | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEACON | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEAM | Erlang Compiled Erlang Code (Telefonaktiebolaget LM Ericsson) |
| .BEANS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEAT | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEATWAVE | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEC | Break Even Calculator |
| .BED | InfoSnorkel Blue Elephant Definition |
| .BED | RegionMiner Genomic Regions File (Genomatix Software GmbH) |
| .BED | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEE | Beeline-AIR System File |
| .BEE | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEE | The Bee Archiver Compressed Archive |
| .BEEP | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEF | Boomi Integration Platform Setup Information (Boomi, Inc.) |
| .BEGIN | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEGINNERS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEGINNING | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEHEADER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEHINDTHEWH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEJEWELED2DELUXESAVEDGAME | Bejeweled Ver 2 Saved Game File (PopCap Games, Inc.) |
| .BEL | Belon Compressed Archive |
| .BEL | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEL | HPXView Binary Event Log Archive (Haliplex Communication Systems) |
| .BEL | Beamer Layout File (The Beamer Project) |
| .BELL | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BELL2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BELLS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BELOW | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEN | Syssoft Sandra File |
| .BEP | Beamer Playlist (The Beamer Project) |
| .BER | German Bericht Report File |
| .BES | MOBY Database (Bitter End Systems) |
| .BETWEEN | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEX | British National Bibliography File |
| .BEX | BOOM Extensions To Dehacked |
| .BEX | Pretty Good Privacy (PGP) Binary Extracted Public Key (PGP Corporation) |
| .BEX | Kashmir 3D Transparent Color Definition |
| .BEXPK | Pretty Good Privacy (PGP) Binary Extracted Public Key (PGP Corporation) |
| .BEYOND | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEYOND2000 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BEZ | Bitstream Fontware |
| .BEZ | Bezier Surface File |
| .BF | Cryo Interactive Game Data |
| .BF | Brainf*ck Program |
| .BF | Beyond Good & Evil Game Archive (Ubisoft Entertainment) |
| .BF | Befunge Program |
| .BF2 | Bidfax 2000 SE Database (Management Computer Controls, Inc.) |
| .BF2 | Bradford 2 Font |
| .BFA | Blowfish-encrypted File |
| .BFB | Ralcgm File |
| .BFC | Windows 95 Briefcase File |
| .BFE | bcrypt Blowfish Encrypted File (Johnny Shelley) |
| .BFF | WorldToolKit Neutral File Format |
| .BFF | AIX Backup File Format |
| .BFFM | B17 Flying Fortress Game File |
| .BFI | Blaise Index (Statistics Netherlands) |
| .BFL | Colin McRae Rally 2 Data File |
| .BFL | yBook eBook (Spacejock Software) |
| .BFL | Big Flexible Line Interpretation (C64) Bitmap |
| .BFLI | Big Flexible Line Interpretation (C64) Bitmap |
| .BFM | UNIX Font Metrics File |
| .BFN | Brother Embroidery Software Font (Brother Industries, Ltd.) |
| .BFR | NI Observer Capture File |
| .BFS | Tivoli Storage Manager File (IBM) |
| .BFX | BitFax Document (Bitware) |
| .BG | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BG | Lotus Agenda File |
| .BG | Backgammon for Windows Game File (Microsoft Corporation) |
| .BGA | OS/2 Bitmap Graphic Array (IBM) |
| .BGB | Chat Background Graphic (Microsoft Corporation) |
| .BGCF | Greeting Card Designer Greeting Card Design (Belltech Systems, LLC) |
| .BGDB | Global Virtual Accademy E-Learning File |
| .BGI | BGInfo Configuration File (Bryce Cogswell) |
| .BGI | Borland Graphic Interface (Borland Software Corporation) |
| .BGL | Flight Simulator Scenery File (Microsoft Corporation) |
| .BGL | Babylon Glossary File (Babylon.com Ltd.) |
| .BGM | Basic4GL 3D Object (BasicGl - Tom Mulgrew) |
| .BGM | Jane's Combat Simulations F-15 |
| .BGN | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BGO | BigOven Recipe Card (sdmventures) |
| .BGT | Graphic Accounts Budget Data (FKJ Software) |
| .BGT | Quicken 2002 Internet Common File (Intuit Inc.) |
| .BGV | BonanzaGraf |
| .BGW | Final Fantasy XI Music (Square Enix Co., LtdSquare Enix Co., Ltd) |
| .BGX | BC45 BGI File |
| .BH | BlackHole Archive Format File |
| .BH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BH3 | Rise of Nations Unit Graphic (Microsoft Corporation) |
| .BHA | Rise of Nations Unit Graphic (Microsoft Corporation) |
| .BHF | pcAnywhere Host File (Symantec Corporation) |
| .BHI | Partminer Lib file |
| .BHL | Partminer Lib file |
| .BHO | Behold Settings File (Louis Kessler) |
| .BHS | Rise of Nations Script (Microsoft Corporation) |
| .BHTML | BabuHTML Embedded Software File |
| .BHX | BinHex Compressed File ASCII Archive |
| .BI | Quick Basic or Visual Basic for DOS Include File (Microsoft Corporation) |
| .BI | Progress Database Before Image File (Progress Software Corporation) |
| .BI | Binary File |
| .BI$ | MS Compressed BI Decompress with UNPACK.EXE. |
| .BI7 | Rukus 110 File |
| .BI? | LoseThos Binary Executable File (Terry A. Davis) |
| .BIB | Bibliography |
| .BIB | JavaBib BibTeX File |
| .BIB | TeX/BibTeX Literature Database |
| .BIB | Papyrus Database |
| .BIBTEX | BibTeX Document |
| .BIC | Civilization III Scenario (Firaxis Games, Inc.) |
| .BIC | Neverwinter Nights Character Sheet (Bioware) |
| .BID | BidMaker 2002 |
| .BIE | JBIG File |
| .BIF | BioWare Aurora Engine Resource File (BioWare Corp.) |
| .BIF | byLight Graphic |
| .BIF | TomTom General Info (TomTom International BV) |
| .BIF | Baldur's Gate Archive |
| .BIF | Binary Information File |
| .BIF | GroupWise Initialization File (Novell, Inc.) |
| .BIF | Image Capture Board Binary Black & White Image |
| .BIF | MagicISO Boot Information File (MagicISO Inc.) |
| .BIF | Planescape: Torment Archive |
| .BIF | UltraISO Boot Information File (EZB Systems, Inc.) |
| .BIF | BioWare Infinity Engine Archive of Resources (BioWare Corp.) |
| .BIF | WordPerfect Binary Information File (Corel Corporation) |
| .BIFF | BioWare Infinity Engine Archive of Resources (BioWare Corp.) |
| .BIFF | XLITE 3D file |
| .BIG | Chinese Text |
| .BIG | Electronic Arts Game MOD File (Electronic Arts, Inc.) |
| .BIG | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIG | Home World 2 SGA Archive (Relic Entertainment Inc.) |
| .BIG | Cartes Michelin |
| .BIG | Homeworld Compressed Data Archive (Sierra Entertainment, Inc.) |
| .BIG | Fifa World Cup Game File |
| .BIG5 | Chinese Text |
| .BIGBLUEFONT | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIK | Bink and Smacker Game Video File Codec (RAD Game Tools, Inc.) |
| .BIK | BioCharter Profile Backup |
| .BIL | ArcView Image File (ESRI) |
| .BILL | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIM | Envisioneer Self-contained Catalog Item (Cadsoft Corporation) |
| .BIMD | Blue Ink Meta-Data (Automated Architecture, Inc.) |
| .BIN | Micrografx Designer 7 Project Image |
| .BIN | SGI Powerflip |
| .BIN | Linux Executable |
| .BIN | Binary File |
| .BIN | MacBinary Archive Format Often used on Macintosh. |
| .BIN | CDRWin CD Image File |
| .BIN | Thomson Speedtouch Series WLAN Router Firmware (Thomson Telecom) |
| .BIN | AVG Update File (AVG Technologies) |
| .BIN | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIN | Perceptron Scanner File |
| .BIN | MTK Chipset GPS Tracklog |
| .BIN | TenCORE Plug-in Helper Application (TenCORE) |
| .BINS3 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BINS4 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIO | OS/2 Bios File |
| .BIO | BioArc Compressed Archive |
| .BIO | Infinity Game Engine Character Biography (BioWare Corp.) |
| .BIO | BioCharter Profile |
| .BIOT | BiotSavart Magnetic Design File (Ripplon Software Inc.) |
| .BIP | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIP | ArcView Image File (ESRI) |
| .BIP | Blue Ink Project (Automated Architecture, Inc.) |
| .BIRD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIT | Xilinx Integrated Software Environment Bitstream File (Xilinx, Inc.) |
| .BIT | Worms Armageddon Imported Map |
| .BIT | X11 Bitmap Image |
| .BIT | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIT | Worms World Party Imported Map |
| .BITMAP | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BIU | BidMaker 2002 Update |
| .BIX | Index to a .BIB BibTeX Bibliography Database |
| .BIX | BIX Archiver Compressed Archive |
| .BIX | Civilization III Scenario (Firaxis Games, Inc.) |
| .BIX | Digital Video Witness CCTV Data File (Kodicom Co., Ltd) |
| .BIZ | Creatacard Business Card Project (Broderbund) |
| .BIZ | PrintMaster Gold Document (Broderbund) |
| .BIZ | Print Shop Business Card File (Broderbund) |
| .BIZ | BIZ dVS Model/Object |
| .BIZ | ShowBiz Project File (ArcSoft, Inc.) |
| .BIZDESIGN | BusinessReport Design (Actuate Corporation) |
| .BIZDOCUMENT | BusinessReport Document (Actuate Corporation) |
| .BIZZARELOVETRIANGLE | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BJD | NDDigital Print Bureau (NDDigital S/A) |
| .BJF | NTI Backup NOW! File |
| .BJG | DESQview (Symantec Corporation) |
| .BJK | Blaise File (Statistics Netherlands) |
| .BJK | Scanner Recognita file |
| .BJL | BJL Business Systems Active Translation Document (The BJL Group) |
| .BJO | Tabrite Banjo Tablature (Janet Davis Music) |
| .BK | Backup |
| .BK | Movie Magic Screenwiter Screenwriter Document Backup (Write Brothers, Inc.) |
| .BK | JetFax Faxbook File |
| .BK | FrameMaker BookFile Document (Adobe Systems Incorporated) |
| .BK | LinguAssist File |
| .BK! | Backup |
| .BK$ | Backup |
| .BK1 | VirtuaGirl Graphics Container (Totem Entertainment) |
| .BK1 | Bach Preludes and Fugues MIDI akmi Source, Book 1 |
| .BK1 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BK1 | Backup |
| .BK2 | VirtuaGirl Graphics Container (Totem Entertainment) |
| .BK2 | Backup |
| .BK2 | Bach Preludes and Fugues MIDI akmi Source, Book 2 |
| .BK3 | VirtuaGirl Graphics Container (Totem Entertainment) |
| .BK3 | Backup |
| .BK4 | Backup |
| .BK5 | Backup |
| .BK6 | Backup |
| .BK7 | Backup |
| .BK8 | Backup |
| .BK9 | Backup |
| .BKC | Backup4all Backup Catalog File (Softland) |
| .BKC | Collectorz.com Book Collector Book Collection Data (Collectorz.com) |
| .BKF | WindowsXP Backup Utility Backup Set (Microsoft Corporation) |
| .BKF | Moto Racer Archive |
| .BKG | Samsung Document (Samsung) |
| .BKG | Background File |
| .BKG | UWXAFS Binary Format Data File |
| .BKGND | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BKI | IBM Softcopy Reader (Bookmanager) Bookshelf (and Book) Index File (IBM) |
| .BKI | IBM BookManager Backup Index |
| .BKI | Backup Index |
| .BKP | Backup |
| .BKR | ReplaceEm Fileset (Custom Fit Software) |
| .BKR | Bruker Aspect NMR Data File |
| .BKS | BookManager Read Bookshelf (IBM) |
| .BKS | IBM Softcopy Reader Bookmanager Book File (IBM) |
| .BKS | Works Spreadsheet Backup (Microsoft Corporation) |
| .BKS | Windows 2000 Scheduled Backup Script (Microsoft Corporation) |
| .BKT | Zortech 3 tools Samples File |
| .BKU | Timeslips Backup (Peachtree Software) |
| .BKW | FontEdit Fontset Mirror Image |
| .BKY | bookkey Bookmark/Keyword Data (Michael Valentiner-Branth) |
| .BL | Binary Linework TIFF Bitmap |
| .BLA | Blaise Data Model (Statistics Netherlands) |
| .BLA | Blat E-mail |
| .BLA | Black Color Separation (Adobe Systems Incorporated) |
| .BLACK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLACKMORE | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLANK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLAST | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLASTER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLASTERBALL3SAVEDGAME | BlasterBall Ver. 3 Saved Game (WildTangent, Inc.) |
| .BLB | DreamWorks Resource Archive |
| .BLB | Blorb Game Resource Package |
| .BLB | Blob File |
| .BLB | ACT! Database File (Best Software CRM Division) |
| .BLC | BIACORE Instruments and BIAlite Project (Biacore) |
| .BLD | EnergyPro (EnergySoft, LLC) |
| .BLD | Visual Build Project (Kinook Software, Inc.) |
| .BLD | ACT! (Best Software CRM Division) |
| .BLD | BASIC Bload Graphics |
| .BLD | Developer Studio MAK (Microsoft Corporation) |
| .BLD | VersaPro Block Build Info |
| .BLD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLD | My Personal Programmer Project File (M:Pact Technologies) |
| .BLD | 3D Home Design Suite Model (Cadsoft Corporation) |
| .BLD | RealFlight Radio Control Airplane Description (Knife Edge Software) |
| .BLD | MegaPaint |
| .BLD | Yoot Tower Saved (Game) Building (Sega) |
| .BLD | Weinberger Picture Sequence |
| .BLD2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLDITAL | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLE | Photoline4 Blends file |
| .BLE | BIAevaluation Ver 2.x Project (Biacore) |
| .BLEND | Blender 3D File |
| .BLEND | Blender Publisher Data File (Stichting Blender Foundation) |
| .BLF | Beast 2.02 Trojan File |
| .BLF | Advanced Computer Architecture Car Simulation |
| .BLF | ObjectStore Distribution File (Franz Inc.) |
| .BLF | BIACORE Instruments and BIAlite Project (Biacore) |
| .BLF | Telerate Workspace File |
| .BLF | Rally Online Car Texture File (GameSpy Industries) |
| .BLF | BancTec Scanner Driver (Kofax) |
| .BLF | DriveBlockEditor Function Block Programming Data (Rockwell Automation) |
| .BLG | BibTeX Log |
| .BLG | MicroSim PCBoard Backward ECO Log File |
| .BLG | Windows Binary Performance Log |
| .BLG | ARCSOLO Backup Log |
| .BLI | PDP-10 BLISS-10 Compiler Source |
| .BLI | BLINK Archiver Archive (De Trans Software) |
| .BLI | Thomson Speedtouch Series WLAN Router Firmware (Thomson Telecom) |
| .BLINK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLK | WordPerfect Temporary File (Corel Corporation) |
| .BLK | ProWORX Nxt Block Data (Schneider Electric) |
| .BLK | Lightscape Block Library |
| .BLK | Amiga IFF (Amiga) |
| .BLK | VersaPro Block |
| .BLK | Win32Forth Block Data |
| .BLK | Wavefront Image (Alias) |
| .BLL | INPRISE Format Language Library (Borland Software Corporation) |
| .BLL | VBS/European-A Worm |
| .BLN | Rise of Nations Campaign Media File (Microsoft Corporation) |
| .BLOB | Steam Registry (Valve Corporation) |
| .BLOB | Cosmic Blobs Model (SolidWorks Corporation) |
| .BLOCK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLOCKS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLOSSOMS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLP | Blizzard Game Picture (Blizzard Entertainment) |
| .BLR | BIACORE Instruments and BIAlite Project (Biacore) |
| .BLS | BIACORE Instruments and BIAlite Project (Biacore) |
| .BLS | Brush Lettering Saved Brush Lettering Style (EK Success, Ltd., pcCrafter, Inc.) |
| .BLS | Blockland Saved Game (Step 1: Games LLC) |
| .BLT | AOL Instant Messenger (AIM) Saved Buddy List File (America Online, Inc.) |
| .BLT | CATC Merlin Bluetooth Trace Files (Computer Access Technology Corporation (CATC)) |
| .BLT | Wordperfect for DOS (Corel Corporation) |
| .BLU | Apple Binary 2 Library Utility Archive |
| .BLU | blue Database (walkingtoyou.com) |
| .BLUE | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLUE | EVE Online Texture File (CCP hf) |
| .BLUEBERRY | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLUEESMERALDA | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLUEMONDAY | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLURB | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BLW | ArcView World File For BIL Image (ESRI) |
| .BLY | Fifa World Cup Game Art Loadgame file. |
| .BLZ | Emblaze.Creator File |
| .BLZ | Serial Number File |
| .BLZ | N-Gage Game File (Nokia) |
| .BLZ | Blazon Heraldic Shield |
| .BLZ | Bitmap Graphic |
| .BLZ | Twinkle Bulbs Bulb File |
| .BM | X Windows System Bitmap |
| .BM | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BM$ | Modem Bitware Fax disk2 file |
| .BM1 | Apogee BioMenace Data |
| .BM2 | Subspace/Continuum Graphic |
| .BMA | BMA Archiver Compressed Archive |
| .BMAP | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BMB | Pro/ENGINEER Temporary File (PTC) |
| .BMB | SLICS Bounding Box Information |
| .BMC | IBM Voice Type languages Newuser File |
| .BMC | Embroidery Graphic File |
| .BMD | GameCube 3D Model (Texture + Skeleton) (Nintendo) |
| .BMD | Mu Online Data File (WEBZEN, Inc.) |
| .BME | Beatmania Music Simulator File (Konami Broadcasting) |
| .BMF | Corel Flow Image File (Corel) |
| .BMF | FloorPlan Project File (IMSI/Design LLC) |
| .BMF | BrainMine Mind Map (Neural Matters Limited) |
| .BMF | BMF Bitmap |
| .BMF | ByteMap Font |
| .BMG | Bert's Dinosaurs File |
| .BMHTML | Deluxium Stored Bookmark (Bookmark Hyper Text Markup Language) (ShadowIdeas,co,uk) |
| .BMI | 3ds Max Executable (Autodesk, Inc.) |
| .BMI | Blaise Index File (Statistics Netherlands) |
| .BMI | Blue Martini Import File |
| .BMI | Buzz Instrument |
| .BMK | BMC Software Patrol Icon File |
| .BMK | WinDVD Bookmark (Corel Corporation) |
| .BMK | Help Bookmark |
| .BML | BusinessMAP Map Layer File (ESRI) |
| .BML | Alpha Five Image Library File (Alpha Software, Inc.) |
| .BML | BPM Studio Skin Bitmap (ALCATech) |
| .BML | Bean Scripting Framework (BSF) File |
| .BMM | Tacmi Pixia Palette File |
| .BMP | Award AWBM BIOS Bitmap (Phoenix Technologies LTD) |
| .BMP | Infinity Game Engine Palette Information (BioWare Corp.) |
| .BMP | Windows OS/2 Bitmap Graphics |
| .BMP24 | Bitmap Graphic |
| .BMPENX | egis Encrypted BMP File (HiTRUST Inc.) |
| .BMS | BeMusic Script |
| .BMS | Beatmania Music Simulator File (Konami Broadcasting) |
| .BMS | BIOWRAP Biometric Authentication of Files (Nation Technologies) |
| .BMS | Backup Magic Backup Set |
| .BMT | Ami Pro Button Image (IBM) |
| .BMT | Alpha Five Image Library File (Alpha Software, Inc.) |
| .BMTP | Bome's Midi Translator Project File (bome.com) |
| .BMU | Infinity Game Engine BioWare Music Unit (BioWare Corp.) |
| .BMW | Buzz Music File with Waves |
| .BMW | W32/Liji-A |
| .BMX | Alpha Five Image Library File (Alpha Software, Inc.) |
| .BMX | BMXdesign Extended Bitmap Graphic (Container) (HEIDENHAIN) |
| .BMX | Buzz Music File |
| .BMX | Siemens Mobile Phone Animation (Siemens) |
| .BMZ | Compressed BMP File |
| .BMZ | Demon Stalkers: Raid on Doomfane |
| .BM_ | Mumath 30 File |
| .BM_ | WebCD Fread File |
| .BN | AdLib Instrument Bank |
| .BN2 | Bojanov Encryptor Encrypted File (Bojanov Software) |
| .BN7 | Ox Object-Oriented Matrix Programming Language PcGive 7 Data File |
| .BNC | Bojanov Encryptor Encrypted File (Bojanov Software) |
| .BND | DB2 Bind File |
| .BND | Typequick File |
| .BND | Flight Simulator Panels File (Microsoft Corporation) |
| .BNF | IBM Voice Type Languages Map File |
| .BNG | RANGER.EXE |
| .BNK | ExamView Question Bank (FSCreations, Inc.) |
| .BNK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BNK | AdLib Instrument Bank |
| .BNK | Bink Compressed Video/Audio File |
| .BNK | SimCity Game File (Electronic Arts, Inc.) |
| .BNL | MicroSim PCBoard Netlist File For The Board Layout |
| .BNR | Banner - Poster Graphic Banner |
| .BNR | Binary News Reader File |
| .BNSKIN | BeatNik Clock Skin (Something Decent) |
| .BNT | Entropia Universe Texture, Sound and String Archive (MindArk PE AB) |
| .BN_ | Ntgraph Ze32v215 file |
| .BOA | BOA Constrictor Archiver Compressed Archive |
| .BOARD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOB | BobDown Downloading Program |
| .BOB | TAC Browser URL (Swoot) |
| .BOB | Bob Raytracer |
| .BOCHSRC | Bochs Configuration File (The Bochs Project) |
| .BOD | Roland Garros Tennis Terrain File |
| .BOD | Data Designer Ddbac File |
| .BOE | Outlook Express Backup File (Microsoft Corporation) |
| .BOF | IBM Voice Type Language Task Enroll File |
| .BOF | BrowserBob Object File (BrowserBob Weblications) |
| .BOI | Botje Bot-file (TNHteam) |
| .BOK | Drudix Book Designer Book Definition File (iAR GmbH) |
| .BOL | Booasm Compressed Archive Library (Microsoft Corporation) |
| .BOLD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOLD6 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOLF6 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOM | Softshare Delta Business Object Model |
| .BOM | Pro/ENGINEER Temporary File (PTC) |
| .BOM | MicroSim PCBoard Bill of Materials |
| .BOM | OrCAD Schematic Capture Bill of Materials File (Cadence Design Systems, Inc.) |
| .BOM | Bill of Materials File |
| .BOMBER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BONES | xfit Ridgeline File |
| .BONGO | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BONK | BONK Lossless/Lossy Audio Compressor |
| .BOO | IBM BookManager Book |
| .BOO | Microsoft Booasm.arc Compressed Archive File |
| .BOO | Kermit Protocol Binary Bootstrap File |
| .BOO | Image File |
| .BOO | Boo Class File |
| .BOOK | ICE Book Reader Book File (ICE Graphics) |
| .BOOK | FrameMaker Book (Adobe Systems Incorporated) |
| .BOOK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOOKS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOOST | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOOT | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOOT | InstallShield (Acresso Software Inc.) |
| .BOOT0 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOOTSCREEN | BootSkins New Boot Screen (Stardock Corporation) |
| .BOOTSKIN | BootSkin Windows Boot Skin (Stardock Corporation, Inc.) |
| .BOP | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOR | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BORDERS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BORED | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BORLAND | C Makefile (Borland Software Corporation) |
| .BOS | Brotherhood of Steel Compressed File |
| .BOS | Dynamite VSP Building Object Style (3am Solutions (UK) Limited) |
| .BOSSFONT | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOT | Frogbot Editor |
| .BOT | LinkBot document |
| .BOT | Robot Arena: Design & Destroy Robot (Gabriel Group, Inc.) |
| .BOT | Soldat Bot Information File (Michal Marcinkowski) |
| .BOULDER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOULESHP | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOUTON | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOW | Back Orifice 2K Workspace |
| .BOWL | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOX | Systems Management Server (SMS) Temporary Holding Area (Microsoft Corporation) |
| .BOX | MediaShout Presentation Script (MediaComplete) |
| .BOX | Foxmail E-Mail Box |
| .BOX | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOX | Calypso Email Mailbox (Rose City Software) |
| .BOX | Notes Mailbox |
| .BOX | ThrottleBox Multimedia Viewer |
| .BOX | Lemmings Revolution Archive |
| .BOX | Vbox Helper Application File (Aladdin Knowledge Systems) |
| .BOX | Digital Video Witness CCTV Data File (Kodicom Co., Ltd) |
| .BOX | VTrain (Vocabulary Trainer) Box File (Paul Raedle) |
| .BOX3D | Box Shot 3D Project (Applications For Life) |
| .BOXES | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOXR | Boxerjam Interactive Game System |
| .BOY | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BOZ | BZIP Over ZIP Compressed File Archive |
| .BP | BankPerfect Accounts File (Fabio Chelly) |
| .BP | Binary Picture TIFF Bitmap |
| .BPC | BuildPro File |
| .BPC | Business Plan Toolkit Chart |
| .BPD | Pscript Binary PostScript Printer Description File |
| .BPD | BizInt Smart Charts for Patents Data Transfer Format (BizInt Solutions) |
| .BPD | FARSITE Burn Period File (The Fire Sciences Lab (FiSL)) |
| .BPD | Cash Compass Plan (Palo Alto Software, Inc.) |
| .BPD | Business Plan Pro Business Plan Data (Palo Alto Software, Inc.) |
| .BPD | Data Designer Database Backup File |
| .BPD | PCIScope PCI and ISA PnP Subsystem Information (APSoft) |
| .BPD | DTLplot Beadpull Data File |
| .BPD | catDB Template Property Dictionary |
| .BPDX | Acrobat Batch PDX (Catalog) File (Adobe Systems Incorporated) |
| .BPEL | Fiorano BPEL Project File (Fiorano Software Inc.) |
| .BPF | Cash Compass Table Formatting (Palo Alto Software, Inc.) |
| .BPF | F-Secure Base Policy File (F-Secure) |
| .BPG | Borland Project Group (Borland Software Corporation) |
| .BPI | IBM Voice Type languages Newuser file |
| .BPJ | Bravo! Project (Thought Studios, Inc.) |
| .BPK | Blaise File (Statistics Netherlands) |
| .BPK | C++ Builder Package File (Borland Software Corporation) |
| .BPKEY | Blender Publisher License Key (Stichting Blender Foundation) |
| .BPL | AutoCAD R2000 Batch Plot List (Autodesk, Inc.) |
| .BPL | Delphi Library (Borland Software Corporation) |
| .BPL | Winamp Ver 3 Playlist File (Nullsoft) |
| .BPLIB | BrilliantPhoto Photo Library File (Brilliant Labs, Inc.) |
| .BPM | Brazil r/s Photon Map Storage File (SputterFish, LLC) |
| .BPM | Battle Planner Module (Battle Planner, LLC.) |
| .BPMN | ActiveModeler Avantage Template File (KAISHA-Tec Co. Ltd) |
| .BPP | MUSICMATCH Burner Plus Project |
| .BPP | Taskmaster Batch Pilot Project (Datacap Inc.) |
| .BPP | Clarion for Windows Backup Application (SoftVelocity) |
| .BPR | Reference Count 01 File |
| .BPR | BackupXpressPro Project File |
| .BPR | C++ Builder 6 Project (Borland Software Corporation) |
| .BPS | Works Document (Microsoft Corporation) |
| .BPS | Bulletproof FTP Settings |
| .BPS | XMap Flight Plan or Flight Plan Statistic File (Delorme) |
| .BPS | Business Plan Toolkit |
| .BPT | Belarc Product Key (Belarc) |
| .BPT | Corel Bitmap Master File |
| .BPV | BallPark Business Valuation Valuation Scenario File (BulletProof Business Plans) |
| .BPW | QuickBooks Business Planner File (Intuit Inc.) |
| .BPW | ArcView World File For BIP Or BMP Images (ESRI) |
| .BPX | Truevision Targa Bitmap |
| .BPX | BusiPlan File (Manager-Pro) |
| .BPX | Lumena BigPix |
| .BQW | ArcView World File For BSQ Image (ESRI) |
| .BQY | BrioQuery File (Oracle) |
| .BR | Omnis7 Data (Omnis Software) |
| .BR | Bridge Script |
| .BR | The Playa File |
| .BR1 | Wincmd Fle |
| .BR3 | Bryce 3D Scene File (DAZ Productions) |
| .BR4 | Bryce 4 Scene (DAZ Productions) |
| .BR5 | Bryce 5 Scene (DAZ Productions) |
| .BR6 | Bryce 6 Scene (DAZ Productions) |
| .BRAIN | Msdev Common Addins File |
| .BRAINCHIME | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BRAS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BRC | Onset Design Briefcase Briefcase (Onset Design) |
| .BRC | Bryce 2 Scene (DAZ Productions) |
| .BRCC | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BRD | WinBoard Project (Ivex Design International) |
| .BRD | Allegro (Cadence Design Systems) |
| .BRD | BizInt Smart Charts for Pharmaceuticals Data Transfer Format (BizInt Solutions) |
| .BRD | Winning Bridge Saved Hand (Gerald Wilson) |
| .BRD | EAGLE Layout Editor Board File (CadSoft Computer GmbH) |
| .BRD | RPG Toolkit Board Design File (Christopher Matthews) |
| .BRE | Breuckmann Scanner File |
| .BREAK | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BREAST | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BREATH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BREP | Boundary Representation File Format |
| .BREP | Open CASCADE 3D Model File (Open CASCADE Company) |
| .BRF | Brief |
| .BRF | Duxbury Braille Translator Cross Platform Braille File (Duxbury Systems, Inc.) |
| .BRF | Braille ASCII File |
| .BRH | Baraha Document (Sheshadrivasu Chandrasekharan) |
| .BRI | Basic Rate Interface File |
| .BRI | FirstClass |
| .BRIDGESORT | Adobe Bridge Cabinet File (Adobe Systems Incorporated) |
| .BRITANNIA | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BRK | The Brake! Mailer REXX Script |
| .BRK | Brooktrout Fax-Mail File |
| .BRL | Ballistic Research Laboratory CAD |
| .BRLCAD | Ballistic Research Laboratory CAD |
| .BRM | Kega Fusion Backup RAM |
| .BRN | BrainStorm Data File (Brainstorm Software Ltd) |
| .BRN | PersonalBrain Data (Brain) File (TheBrain Technologies Corp.) |
| .BRN | MegaHAL Brain File (Ai Research) |
| .BRN | yBook Compiled eBook (Spacejock Software) |
| .BRO | Tree Professional Broadleaf Creator File |
| .BRO | Embroidery File |
| .BRO | BR-532 Digital Studio |
| .BRO | Creatacard Booklet/Brochure Project (Broderbund) |
| .BRP | Tree Professional Broadleaf Creator Image |
| .BRS | Corel Painter Brush File |
| .BRS | RoboHELP Browse Sequence |
| .BRS | Batchrun Batch File (Outer Technologies) |
| .BRS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BRSH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BRSTM | BRSTM Audio Stream (Nintendo) |
| .BRT | Booria Carpet Designer Professional Plus Edition 6.20 Robotuft Project (Booria CAD/CAM Systems) |
| .BRT | Brooktrout Fax-Mail File |
| .BRT | PeoplePC Install Script (PeoplePC, Inc.) |
| .BRT | Micrografx System4 Browser file |
| .BRU | Brutus Restore File |
| .BRU | Photoline4 Brushes File |
| .BRUSH | Xerox Doodle Brush File |
| .BRUSH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BRUSH2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BRW | Application File Associated with financial institution(s) loan applications. |
| .BRX | Enterprise Information Portal Suite Backup and Restore Data/Settings (Epicor Software Corporation) |
| .BRX | Multimedia Browsing Index |
| .BRX | Beam Report Document (SYSTEAM) |
| .BRZ | DbBRZ File |
| .BS | Infinity Game Engine Compiled Script (BioWare Corp.) |
| .BS | Printfox/Pagefox Bitmap |
| .BS1 | Apogee Blake Stone Data |
| .BS2 | Burning Sand 2 Add-on (Max Nagl) |
| .BS2 | Basic Stamp 2 Code File |
| .BSA | BSARC Compressed Archive |
| .BSB | BioShock Saved Game (2K Games) |
| .BSB | SWAT Sub-basin Output File |
| .BSB | MapInfo Sea Chart (Mapinfo Corporation) |
| .BSC | Developer Studio Browser File (Microsoft Corporation) |
| .BSC | BinSCII Apple II Compressed Archive |
| .BSC | Fortran Pwbrmake Object |
| .BSC | Source Browser Database |
| .BSC | Boyan Script |
| .BSCS | Strategy2Act Balanced Scorecard File (AKS-Labs) |
| .BSCT | Strategy2Act Balanced Scorecard Strategy File (AKS-Labs) |
| .BSD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BSD | FacetWin Bitwise Backup Set (FacetCorp) |
| .BSD | Xilinx Integrated Software Environment Boundary-Scan Description Language (BSDL) File (Xilinx, Inc.) |
| .BSD | Crossfire File |
| .BSE | CRiSP Harvest File |
| .BSF | Rainbow Six: Rogue Spear Buildspace File (Red Storm Entertainment, Inc.) |
| .BSF | JCanyon: Grand Canyon for Java DEM File |
| .BSF | BadukSearch/BadukTracer Selected Game File |
| .BSF | Bridge-Soft Quarterly File |
| .BSH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BSH | BeanShell Script |
| .BSI | BSPlayer Configuration |
| .BSK | Bryce 4 File (DAZ Productions) |
| .BSL | BSPlayer Configuration |
| .BSM | SQLMatcher Project File (Berryware) |
| .BSN | MIDI File |
| .BSN | BSA Packing Program Archive (PhysTechSoft Ltd.) |
| .BSP | BestAddress HTML Editor Site Project File (Multimedia Australia Pty. Ltd.) |
| .BSP | Getic 3D Scene/Model File |
| .BSP | Star Trek Elite Force Map File (Raven Software) |
| .BSP | Steam Source SDK Compiled Game Map File (Valve Corporation) |
| .BSP | arahnoWare Enterprise Sever 6 BSP Code Editor |
| .BSP | Quake Map (Id Software, Inc.) |
| .BSP | Half-life/TFC/CS Map |
| .BSP | Valve Game Map File (Valve Corporation) |
| .BSQ | Oracle Control File |
| .BSQ | Apple II BINSCII-encoded (Apple Inc.) |
| .BSQ | ArcView Image File (ESRI) |
| .BSQ | BCDown Download |
| .BST | BibTeX Style File |
| .BST | Star Trek: Birth of the Federation Structure/Ship Info File |
| .BSU | Brindys BriTray |
| .BSV | BASIC Bsave Graphics |
| .BSW | Office Business Scorecard Manager Workspace File (Microsoft Corporation) |
| .BSY | VTrain (Vocabulary Trainer) Learning Cardfile (Paul Raedle) |
| .BSY | FTN Soft Busy Flag |
| .BSZ | BSplayer Compressed Skin File (BST2K Networks) |
| .BS_ | Bookshelf Find Menu Shell Extension (Microsoft Corporation) |
| .BT | VTBuilder Binary Terrain |
| .BT | BTwin Project Data (Procedimientos-Uno, S.L.) |
| .BT | BluffTitler Gallery Show File (OuterSpace Software) |
| .BT3 | Control Runner Button Configuration File (MomSoft) |
| .BTAB | Base Guitar Tabulature |
| .BTC | Becker Tools Compressed Archive |
| .BTD | Business-in-a-Box File (BizTree Inc.) |
| .BTD | Power To-Do List Data File (Five O'clock Software) |
| .BTF | Basi Office TypeFace Document (Basi Computers) |
| .BTF | Brother Scanner File |
| .BTF | Baires Turf Configuration File (Zamaroht & Karel) |
| .BTG | FlightGear Scenery File (The FlightGear Crew) |
| .BTH | Bathy Recorder Data File (Jeppesen Marine, Inc.) |
| .BTL | INPRISE Format Language Library (Borland Software Corporation) |
| .BTL | Inmos BooTabLe File |
| .BTL | American Civil War File (Interactive Magic) |
| .BTL | BEATO Lite Single Assessment Data (Unisys) |
| .BTM | 4DOS Batch To Memory Batch File |
| .BTN | JustButtons Animated Bitmap (Lincoln Beach Software) |
| .BTN | buttonFile File (ButtonWare Inc.) |
| .BTNDATA | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BTO | Baytex Organix! 2001 Language Kit |
| .BTOA | Binary-to-ASCII Format |
| .BTPC | BTPC Encoded Bitmap (John Robinson) |
| .BTR | AviSys Bird Watcher Database (Jerry Blinn) |
| .BTR | Btrieve Database File (Pervasive Software Inc.) |
| .BTR | FrontPage Binary-Tree Index (Microsoft Corporation) |
| .BTREE | Mac OS HFS+ B-tree File (Apple Inc.) |
| .BTS | Creative Digital Blaster Digital VCR File |
| .BTT | ICQ Find Users File (ICQ Inc.) |
| .BTU | BEATO Unite Multiple Assessment Data (Unisys) |
| .BTW | Steuer2001 File |
| .BTW | BarTender Barcode Label (Seagull Scientific, Inc.) |
| .BTX | BibTeX Document |
| .BTX | SEEDIS Index |
| .BTX | DB/TextWorks Database Term and Word Indexes (Inmagic, Inc.) |
| .BTY | Railroad Tycoon 3 Building (PopTop Software Inc.) |
| .BU | Pegasus Mail Temporary File (David Harris) |
| .BUB | Ipix Spherical Panorama |
| .BUB | Photobubble File |
| .BUBBLES | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUC | Photoshop Elements Backup File (Adobe Systems Incorporated) |
| .BUD | Quicken Backup (Intuit Inc.) |
| .BUDGET | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUDGETS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUDGETX | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUF | WinXL File |
| .BUFFER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUFR | Binary Universal Form for the Representation |
| .BUFR | Meteorological Data |
| .BUG | Bug (Problem) File |
| .BUG | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUGFIXES | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUGS | Generally Bugs File |
| .BUGS | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUILD | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUILDER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUL | Capella Report Card Data File (Castor & Pollux Software Inc.) |
| .BUL | JSim I4 Bullseye Data Format (University of Washington) |
| .BUL | Holiday Lights Screen Saver Bulb File |
| .BUM | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUM | Poser Bump |
| .BUN | Cakewalk Audio Bundle File (Cakewalk) |
| .BUN | Monkey Island 3 |
| .BUNDLE | OS X Bundle (Plug-ins and Add-ons) (Apple Inc.) |
| .BUNDLE | iMovie 3 Plug-in Bundle (Apple Inc.) |
| .BUNNY | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUNNY2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUP | Softcode Tracker Contact Manager Backup |
| .BUP | Brother Embroidery System File |
| .BUP | CD Indexer |
| .BUP | PC-Bibliothek Update File |
| .BUP | DVD Info File Backup |
| .BUREAU | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BURGER | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BURNING | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BURST | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUS | Netmino File |
| .BUSH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUSYBOX | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUT | Buttons! Button Definition |
| .BUTTONS4 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BUY | Movie Data File |
| .BUYING | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BV1 | WordPerfect Overflow File (Corel Corporation) |
| .BV2 | WordPerfect Overflow File (Corel Corporation) |
| .BV3 | WordPerfect Overflow File (Corel Corporation) |
| .BV4 | WordPerfect Overflow File (Corel Corporation) |
| .BV5 | WordPerfect Overflow File (Corel Corporation) |
| .BV6 | WordPerfect Overflow File (Corel Corporation) |
| .BV7 | WordPerfect Overflow File (Corel Corporation) |
| .BV8 | WordPerfect Overflow File (Corel Corporation) |
| .BV9 | WordPerfect Overflow File (Corel Corporation) |
| .BVC | IBM Voice Type Language Newuser File |
| .BVD | BitDefender Vault File (BitDefender) |
| .BVD | BvD Fileset |
| .BVH | Character Studio BioVision Motion Capture File (Autodesk, Inc.) |
| .BVH | Biovision Motion File |
| .BVI | IBM Voice Type Language Newuser File |
| .BVL | Micrografx Picture Publisher 8 Textures File |
| .BVS | BVS Solitaire Collection |
| .BW | Silicon Graphics Raw Black and White Bitmap (Silicon Graphics, Inc.) |
| .BW | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BW1 | Byteworx FMEA?? FMEA Database (Byteworx Inc.) |
| .BWA | BlindWrite BWA Builder Physical CD Characteristics File (VSO-Software) |
| .BWB | Visual Baler Spreadsheet File |
| .BWC | BeadWizard Color Palette (Black Hills Software) |
| .BWD | Rally Online Car Description File (GameSpy Industries) |
| .BWE | Black and White 2 Environment Data (Lionhead Studios) |
| .BWG | BrainWave Generator Binaural Beat File (Noromaa Solutions) |
| .BWI | BlindWrite Ver. 4 Image File (VSO-Software) |
| .BWM | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BWM | Blaise File (Statistics Netherlands) |
| .BWP | Book Writer Project |
| .BWP | BeadWizard Pattern (Black Hills Software) |
| .BWR | Kermit Beware Bug List |
| .BWS | Enot External Photo Viewer Settings (Acritum Software) |
| .BWS | BlindWrite Ver. 4 Subchannel Data File (VSO-Software) |
| .BWT | BlindWrite Ver. 4 Table of Contents File (VSO-Software) |
| .BWT | CDmage Table of Contents |
| .BWU | BlindWrite (VSO-Software) |
| .BWV | Business Wave File |
| .BWW | Bagpipe Notation |
| .BWW | Blaise File (Statistics Netherlands) |
| .BWZ | WinImage Batch Configuration File |
| .BXB | BasicX Compiled Project Bytecode (NetMedia, Inc.) |
| .BXD | Broken Cross Disk Manager Database (Kevin Fucik) |
| .BXF | Man's Best Friend Software Breeder Exchange Format |
| .BXI | Blaise File (Statistics Netherlands) |
| .BXM | BX-24 Basic Express Compiler Map |
| .BXP | BootXP File |
| .BXP | BX-24 Basic Express Compiler Module List |
| .BXRC | Bochs Configuration File (The Bochs Project) |
| .BXU | PictureGear Studio File (Sony Electronics Inc.) |
| .BXX | blaxxun Contact |
| .BXY | ShrinkIt Apple II Compressed Archive |
| .BY | Spice Pspice File |
| .BY | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BYO | CartoExploreur Cartographic Map (Bayo) |
| .BYU | Movie File |
| .BZ | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BZ | Bzip UNIX Compressed File |
| .BZ1 | WinTOTAL Automatic Backup (a la mode, inc.) |
| .BZ2 | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BZ2 | ZPoc Christian Music Networks User File List (ZPoc) |
| .bz2 | Bzip 2 UNIX Compressed File |
| .BZA | BZA Compressed Archive |
| .BZABW | AbiWord (The AbiSource Community) |
| .BZF | Textures and Other Information |
| .BZIP2 | Compressed Archive Format |
| .BZM | BusinessMAP Map File (ESRI) |
| .BZN | Star Trek Armada Map File |
| .BZPATCH | Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
| .BZW | BZFlag Map (BZFlag Project Team) |
| .B_T | Eru/erd File |
| .B_W | 1st Reader Mono Binary Screen Image |
| .B_W | Atari/Macintosh Black and White Graphic |
| .B_W | Image Lab |
| .B~K | Backup |