: B

.b
Grand Theft Auto 3 Saved Game File Rockstar Games
.b1
B1 Compressed Archive Catalina Group
.b2a
Btoa Encoded File N/A
.b3d
Blitz3D Entity Model File Blitz Research
.b4s
Winamp Playlist File Nullsoft
.b5i
BlindWrite 5 Disk Image VSO Software
.b5t
BlindWrite 5 Disc Track Information File VSO Software
.b64
Base64 MIME-Encoded File N/A
.b6i
BlindWrite 6 Disc Image VSO Software
.b6t
BlindWrite 6 Track Information File VSO Software
.ba
Scifer External Header Archive Scifer
.bac
Backup File Avantrix
.backup
Android Backup File N/A
.backupdb
Time Machine Backup Folder Apple
.bad
Exchange Badmail File Microsoft
.bafl
BurnAware File List Burnaware Technologies
.bak
Backup File N/A
.bak~
AbiWord Auto-Saved Document AbiSource
.band
GarageBand Project File Apple
.bap
Blaze Audio Wave Information File Blaze Audio
.bar
Age of Empires 3 Data File Microsoft
.bas
BASIC Source Code File N/A
.baserproj
DNA Baser Project File Heracle BioSoft
.basex
BaseX Data File BaseX Team
.bashrc
Bash Non-Interactive Login Shell File The GNU Project
.bash_history
Bash History File The GNU Project
.bash_profile
Bash Interactive Login Shell File The GNU Project
.bat
DOS Batch File Microsoft
.bau
Apache OpenOffice AutoText File Sun Microsystems
.bav
AVG Anti-Virus The Bat! Plugin File RITLABS
.bay
Casio RAW Image Casio
.ba_
Renamed BAT File Microsoft
.bb
Blitz Source Code File Blitz Research
.bb3
BlasterBall 3 Level File Support WildTangent
.bbb
BlackBerry Mobile Phone Backup File Research In Motion
.bbc
BBC BASIC Data File N/A
.bbcd
BobCAD-CAM Document BobCAD-CAM
.bbl
BibTeX Generated Bibliography File Oren Patashnik
.bblm
BBEdit Language Module Bare Bones Software
.bbproject
BBEdit Project File Bare Bones Software
.bbprojectd
BBEdit Project Document Bare Bones Software
.bbs
Bulletin Board System Text N/A
.bbz
BerryBuzz Backup File Bellshare
.bc
BitComet Partially Downloaded File BitComet
.bc!
BitComet Incomplete File BitComet
.bcc
Calendar Creator File Broderbund
.bcd
Windows Boot Configuration Data File Microsoft
.bcf
Business Card Designer Pro File Belltech Systems
.bci
Belarc Advisor Report File Belarc
.bck
VMX Backup File HP
.bckp
Ad-Aware Quarantined File Lavasoft
.bcl
Illumina Base Call File Illumina
.bcm
Business Contact Manager File Microsoft
.bcmx
Business Contact Manager Customization Microsoft
.bcp
Borland C++ Makefile Borland
.bcs
Boland Calibration Settings File Boland
.bct
Adobe Bridge Thumbnail Cache File Adobe Systems
.bdae
Gameloft Game Data File Gameloft
.bdb
Microsoft Works Database Backup File Microsoft
.bdc
Babylon Dictionary File Babylon
.bdd
CARA Sound Radiation Data File CARA
.bdf
Glyph Bitmap Distribution Format Adobe Systems
.bdic
Chrome Dictionary File Google
.bdl
CoCreate Bundle File Parametric Technology
.bdm
AVHCD Information File Sony
.bdmv
Blu-ray Disc Movie Information File Blu-ray Disc Association
.bdp
Exchange Diagnostic Message Microsoft
.bdr
Exchange Non-Delivery Report Body File Microsoft
.bdsproj
Borland Developer Studio Project Embarcadero Technologies
.bdt2
BEEDOCS Timeline 3D 2 Document BEEDOCS
.bdt3
BEEDOCS Timeline 3D 3 Document BEEDOCS
.beam
Compiled Erlang File Ericsson
.bean
Bean Rich Text Document Bean
.bed
UCSC BED Annotation Track File UCSC
.bejeweled2deluxesavedgame
Bejeweled 2 Deluxe Saved Game Big Fish Games
.bet
BETA Source File N/A
.bf
CryoBF Game Data File Cryo Interactive Entertainment
.bfa
Blowfish Encrypted File N/A
.bfc
Windows Briefcase File N/A
.bff
Backup File Format IBM
.bfg
Big Fish Games Application File Big Fish Games
.bfm
Terminal Reality Model File Terminal Reality
.bfs
FlatOut Game Data File Bugbear Entertainment
.bfx
Bitware Fax Document Cheyenne
.bgi
BgInfo Configuration File Microsoft
.bgl
Flight Simulator Scenery File Microsoft
.bgt
Graphics Accounts Data File FKJ Software
.bgz
Blood Frontier Map File Wouter van Oortmerssen
.bh
BlakHole Archive ZipTV
.bho
Behold Organize File Louis Kessler
.bhx
BinHex Encoded File N/A
.bib
BibTeX Bibliography Database N/A
.bic
Civilization 3 Scenario File Take-Two Interactive Software
.bidule
Bidule Layout File Plogue
.bif
BioWare Infinity Engine File BioWare
.bifx
Get Backup Project BeLight Software
.big
Electronic Arts Game Data File Electronic Arts
.bik
Bink Video File RAD Game Tools
.bil
ESRI BIL File ESRI
.bim
Bytessence InstallMaker Document Bytessence
.bin
Binary Disc Image N/A
.bio
Mudbox Bio 3D File Autodesk
.bionix
BioniX Wallpaper Playlist File BioniXWallpaper.com
.bip
Character Studio Biped File N/A
.biq
Civilization 3 Scenario File Take-Two Interactive Software
.bit
Xilinx Bitstream File Xilinx
.bitpim
BitPim Configuration File BitPim
.bix
Civilization 3 Scenario File Take-Two Interactive Software
.biz
Broderbund Business Card File Broderbund
.bjo
TabRite Tablature File N/A
.bk
FrameMaker Book File N/A
.bk1
Autodesk Backup File Autodesk
.bk2
Windows Indexing Service Data File Microsoft
.bkc
Backup4all Backup Catalog Softland
.bkf
Windows Backup Utility File Microsoft
.bkk
BookBuddi eBook File BookBuddi
.bkmk
Yummy FTP Bookmark File Yummy Software
.bkp
Backup File N/A
.bks
NTBackup Settings File Microsoft
.bkup
Backup File N/A
.bkz
FileFort Backup File NCH Software
.blackhawkstriker2
Blackhawk Striker 2 Saved Game WildTangent
.blasterball3savedgame
BlasterBall 3 Saved Game WildTangent
.blb
Blob Data File N/A
.bld
Envisioneer Building Project File Cadsoft
.blend
Blender 3D Data File The Blender Foundation
.blend1
Blender Document Backup File Blender
.blend2
Blender Document Backup 2 File Blender
.blf
CLFS Base Log File Microsoft
.blg
Windows Binary Performance Log File Microsoft
.bli
Thomson Speedtouch Firmware File Thomson
.blk
AutoCAD Block Template File Autodesk
.blkrt
Block Artist Image File Block Artist
.bln
Golden Software Blanking File Golden Software
.blob
Valve Steam Archive Valve
.blockplt
LEGO MINDSTORMS NXT Block Palette File LEGO
.blogthis
Windows Live Writer Data File Microsoft
.blp
Blizzard Texture File Blizzard Entertainment
.bls
Blockland Saved Game File Blockland
.blt
AIM Buddy List AOL
.blu
FileMaker Pro Runtime Extension N/A
.blw
Adobe Photoshop Black and White Presets File Adobe Systems
.blz
N-Gage Mobile Video Game File Nokia
.bm2
Subspace Bitmap File N/A
.bm3
Sony Ericsson Backup File Sony Ericsson
.bmc
Bitmap Cache File Microsoft
.bmd
MU Online Game Data File WEBZEN
.bme
BeatMania 7-Key Song File Konami
.bmf
Binary Material File Corel
.bmg
Nintendo DS On-Screen Text File Nintendo
.bmi
3ds Max Plug-in Autodesk
.bmk
PowerDVD MovieMark File CyberLink
.bml
Bean Markup Language File N/A
.bmp
Bitmap Image File N/A
.bms
BeatMania Song File Konami
.bmx
Siemens Mobile Animations File Siemens
.bmz
Portal Bonus Map Zip File Valve
.bna
Barna Word Processor Document Safe Works
.bnd
DB2 CLI Bind File IBM
.bndl
Game Data Bundle File N/A
.bng
The Bingo Maker Card File The Bingo Maker Team
.bnk
Test Drive Unlimited Data Package Eden Games
.bnp
Sony Camcorder Video Data File Sony
.bns
Portal Bonus Map Script Valve
.bnz
The Bingo Maker Card Template File The Bingo Maker Team
.boc
EasyWord Big Document E-Press
.bok
TestGen Testbank File Pearson Education
.bom
Mac OS X Bill of Materials File Apple
.bonk
Bonk Audio File Bonk
.boo
Booasm Compressed Archive N/A
.book
FrameMaker Book File Adobe Systems
.booktemplate
iBooks Author Document Template Apple
.bookwormdeluxesavedgame
Bookworm Deluxe Saved Game Big Fish Games
.boot
InstallShield Boot File Flexera Software
.bootskin
Stardock Bootskin File Stardock
.box
E-mail Mailbox N/A
.bp2
AutoCAD Batch Plot File N/A
.bp3
AutoCAD Batch Plot File N/A
.bpa
StorageSync Backup Archive SimpleTech
.bpb
PowerDesigner Business Process Backup File Sybase
.bpd
Business Plan Pro Document Palo Alto Software
.bpdx
Acrobat Batch PDX File Adobe Systems
.bpf
Baan ERP Document Infor Global Solutions
.bpg
Borland Project Group Embarcadero Technologies
.bpk
Nero SecurDisc Public Key File Nero
.bpl
AutoCAD Batch Plot File N/A
.bpm
Trados AutoSuggest Dictionary File SDL
.bpn
ArchiCAD Project Backup File GRAPHISOFT
.bpnueb
PNU eBook File Hamed Mosadeq
.bpr
Borland C++Builder Project File Embarcadero Technologies
.bps
BPS Virus File N/A
.bpw
Bitser Password File Bitser
.bpz
Easy Blue Print Symbol Library Easy Blue Print
.bqy
Brio Query File Brio Software
.br3
Bryce 3 Scene File DAZ Productions
.br4
Bryce 4 Scene File DAZ Productions
.br5
Bryce 5 Scene File DAZ Productions
.br6
Bryce 6 Scene File DAZ Productions
.br7
Bryce 7 Scene File DAZ Productions
.brain
PersonalBrain Mind Map File TheBrain Technologies
.brd
EAGLE Circuit Board File CadSoft
.brf
Braille Ready Format File N/A
.brg
ProjectWise User Settings File Bentley Systems
.bri
Bryce Plug-in File DAZ Productions
.brk
Brooktrout Fax Document Dialogic
.brlyt
Wii Textures and Material Lists File N/A
.brm
Bryce Plug-in File DAZ Productions
.brn
BrainStorm Data File BrainStorm Software
.bro
CreataCard Brochure Project Broderbund
.browser
ASP.NET Browser Definition File Microsoft
.brres
Wii BRRES Resource Package N/A
.brs
RoboHelp Browse Sequence File Adobe Systems
.brsar
Wii BRSAR Audio Package N/A
.brstm
BRSTM Audio Stream File N/A
.brt
Bryce Textures File DAZ Productions
.brw
Calyx Point Borrower File Calyx Software
.brx
BREW Application Resource File Qualcomm
.bs1
VirtualBus Vehicle Configuration File VirtualBus
.bs2
BASIC Stamp 2 Code File Parallax
.bs4
Mikogo Session Video Recording BeamYourScreen
.bs7
Windows 7 Boot Updater Skin Windows 7 Boot Updater
.bsa
Bethesda Softworks Archive Bethesda Softworks
.bsb
BioShock Saved Game File Take-Two Interactive Software
.bsc
Visual Studio Source Browser Information File Microsoft
.bsd
BSDL File IEEE
.bsdl
Boundary Scan Description Language File IEEE
.bsf
Blu-ray AVC Video File N/A
.bsh
BeanShell Script Patrick Niemeyer
.bsk
Nero SecurDisc Private Key File Nero
.bsp
Quake Engine Game Map File id Software
.bss
Resident Evil Background Images File Capcom
.bst
BibTeX Style Document N/A
.bt
Binary Terrain File Ben Discoe
.bt!
BitSpirit Incomplete Download File BitSpirit
.btapp
uTorrent App BitTorrent
.btd
Business-in-a-Box Document Biztree
.btf
NationsBank Check Images Bank of America
.bti
Nintendo Texture File Nintendo
.btif
NationsBank Check Image File Bank of America
.btinstall
uTorrent Installer File BitTorrent
.btm
BizTalk Map File Microsoft
.btn
AutoPlay Media Studio Button File Indigo Rose
.bto
Bryce Tree File DAZ Productions
.btoa
Binary-to-ASCII Encoded File N/A
.btr
Btrieve Database File Pervasive Software
.btsearch
BitTorrent Search Engine File BitTorrent
.btw
BarTender Label Seagull Scientific
.bud
Binary Printer Description File Microsoft
.buf
Buffer File N/A
.buildpath
Eclipse Build Path File Eclipse
.bun
Cakewalk Bundle File Roland
.bundle
Mac OS X Application Bundle Apple
.bup
DVD IFO Backup File N/A
.bur
BuRg3r Source Code File Fluffy Smoke Entertainment
.bus
VirtualBus Board Parameters File VirtualBus
.bvd
Bitdefender Vault File Bitdefender
.bvh
Biovision Hierarchy Animation File Biovision
.bvp
VodaHost BlueVoda Project File VodaHost
.bvr
Blue Iris Video Perspective Software
.bwa
BlindWrite Disk Information File VSO Software
.bwf
Broadcast Wave File N/A
.bwg
BrainWave Generator Audio File Noromaa Solutions
.bwi
BlindWrite CD/DVD Disc Image VSO Software
.bwp
BuRg3r Web Page Fluffy Smoke Entertainment
.bws
BlindWrite Sub Code File VSO Software
.bwt
BlindWrite 4 Disk Image N/A
.bww
Bagpipe Player File Doug Wickstrom
.bwz
WinImage Batch Configuration File Gilles Vollant
.bxl
Accelerated Designs PCB Library File Accelerated Designs
.bxx
BS Contact Parameter File Bitmanagement Software
.byu
Brigham Young University Movie File BYU
.bz
Bzip Compressed File N/A
.bz2
Bzip2 Compressed File Julian Seward
.bza
IZArc BGA Archive N/A
.bzabw
Compressed AbiWord Document AbiSource
.bzip
Bzip Compressed Archive N/A
.bzip2
Bzip2 Compressed Archive Bzip
.bzw
BZFlag World File BZFlag.org