B, FILE EXTENSIONS START WITH LETTER 'B' - Windows File Extensions Start with Letter 'B'

B, - FILE EXTENSIONS START WITH LETTER 'B'

B
Ext.	Description	Used by
B&W	Black and white graphics file	atari - mac
B&W	Mono binary screen image	1st Reader
B	Batch list	APPLAUSE
B	Grand Theft Auto saved game	Any of the 3D Grand Theft Auto games in either III or IV era.
B_W	Black and white graphics file	Atari - mac
B1N	Both mono and color binary screen image	1st Reader
B30	Printer font (JLaser - Cordata)	Corel Ventura Publisher
B8	Raw graphics file (one byte per pixel) plane two	PicLab
BA	Binary Archive	Scifer Archiver and Compression [External Header Mode]
BAC	Compiled BASIC	RT-11 BASIC-11
BAD	Bad file	Oracle Corporation - many
BAD	File which covers bad blocks on disk volume (not to be moved)	RT-11
BAK	Backup file
BAL	Music score	Ballade
BALANCE	Balance accounting sheet file	Balance
BAP	Blaze Audio Wave Information File	BlazeAudio MadCap Software
BAR	Horizontal bar menu object file	dBASE Application Generator
BAR	Info Bar for GFX2EXE	GFX2EXE
BAR	Broker Archive. Compressed file containing number of other files for deployment.[1]	IBM WebSphere Message Broker
BAS	BASIC language source	QuickBASIC - GW-BASIC - FreeBASIC
BAT	Batch file	MS-DOS, RT-11
BB	Database backup	Papyrus Design Group
BBL	Bibliographic reference file	TeX/BibTeX
BBM	Brush	Deluxe Paint
BBP	Playlist	BassBox
BBS	Bulletin Board System announce or text info file
BBS	Hudson-style messagebase	FTN software
BC!	Unfinished download	Unfinished BitComet download (a BitTorrent client)
BCF	Card data	Bingo Card Creator
BCH	Batch process object file	dBASE Application Generator
BCH	Datafile	Datalex EntryPoint 90
BCO	Outline font description	Bitstream Inc.
BCP	Borland C++ makefile
BCT	Backup dictionary	Clarion
BCW	Environment settings	Borland C++ 4.5
BDB	Bookends database	Bookends
BDC	Dictionary	Lingvo
BDEF	Builder Definition	Websphere Portlet Factory
BDF	Adobe Glyph Bitmap Distribution Format	Adobe Software
BDF	Binary update file	BUPDATE.EXE (c) TNT Techn.
BDF	Bitmap Distribution Format font file	X11
BDF	Datafile	Egret
BDM	Videoclip	AVCHD
BDMV	Blu-ray Video Data Content file	Media players / software that supports Blu-ray structure
BDR	Border	Microsoft Publisher
BDT	Dictionary	Lingvo
BEF	Bleck Encrypted File
BEZ	Outline font description	Bitstream
BF	Brainfuck sourcefile
BF2	Bradford 2 font
BFC	Briefcase Win95	Win95
BFM	Font metrics	unix/Frame
BFX	Fax	BitFax
BGA	Bitmap graphics
BGI	Borland Graphics Interface device driver	Turbo C - Turbo Pascal
BH	Blackhole	data compression format
BI	BASIC include file	Visual Basic - FreeBASIC
BIB	Bibliography (ASCII)
BIB	Database - not compatible with TeX format	Papyrus
BIB	Literature database	TeX/BibTeX
BIF	Binary Image Format b&w graphics file	Image Capture board
BIK	Bink video file (RAD Video)
BIN	Binary file, usually zero-start (.com analog)
BIN	SGI Powerflip
BIN	Text mode memory dump	The Draw - TUD - ACiDDraw - etc.
BIO	BioniX Wallpaper playlist file	BioniX Wallpaper Changer
BIO	OS/2 BIOS
BIT	Bitmap X11
BK!	Document backup	WordPerfect for Win
BK	Faxbook	JetFax
BK?	Backup file
BKn	Timed backup file for document window n	WordPerfect for Win
BKP	Backup file	Write - TurboVidion DialogDesigner
BKW	Mirror image of font set	FontEdit
BLD	BLoaDable picture	BASIC
BLD	SYSGEN Build procedure file	RT-11
BLEND	Blender3D Project File	Blender
BLG	Backup Log	ARCSOLO
BLK	Temporary file	WordPerfect for Win
BLP	Blizzard Game Picture	Blizzard Entertainment games (various)
BM	BitMap graphics file
BM3	UIQ3 Phone backup
BMK	Help Bookmarks	Windows 3.x
BMP	OS/2 or Win graphics format (BitMap Picture)	QPeg - CorelDraw - PC Paintbrush - many
BMPW	bitmap world-file - geo-references info
BMT	Ami Pro Button	Ami Pro
BNA	Data	Atlas Boundary
BNK	Adlib instrument bank file
BNR	Graphics Banner	Banner - Poster
BOK	Shamela Library book	Shamela Library Program
BOO	Book-format	READIBM
BOO	Compressed file ASCII archive created by BOO (msbooasm.arc)	msbooasm.arc
BOO	Boo programming language source file.	Boo Programming Language
BOT	Bot files, these go with JKB files	Quake 3 Engine
BPC	Chart	Business Plan Toolkit
BPOLY	Data	Prisms binary 3D object
BPP	Backup application	Clarion
BPT	Bitmap fills file	CorelDRAW
BR	Script	Bridge
BRD	Eagle Layout File
BRD	Tanzzle board file	Tanzzle
BRD	Cadence Allegro board file	Cadence
BRF	Braille	Braille embossers and refreshable displays
BRK	Fax	Brooktrout Fax-Mail
BRK	The Brake! Mailer REXX script	The Brake!
BRL	CAD	Ballistic Research Laboratory CAD
BS2	Archive	BS2.EXE
BSA	Archive	BSArc
BSC	Compressed Apple II file archive created by BINSCII	BINSCII
BSC	Database	Source Browser
BSC	Pwbrmake object file	Microsoft Fortran
BSP	Half-Life\Half-Life 2 map files	Valve Corporation
BSS	Casio Phone base	PC-LINK
BST	BiblioTex file (BiblioTex=bibliography file)	TeX
BSY	Busy flag	FTN soft
BTM	Batch-to-memory (quick batch)	4dos -ndos
BTN	Makeover Button file
BUFR	Binary Universal Form for the Representation of Meteorological Data
BUG	Bugs and Problems
BUN	LucasArts Bundle File
BUP	Backup file
BUT	Button definitions	Buttons!
BUY	Datafile format	movie
BVn	Overflow file below insert point in Doc n	WordPerfect for Win
BWB	Spreadsheet application	Visual Baler
BWR	Beware (buglist)	Kermit
BYU	BYU Movie	BYU
BZ2	Archive	bzip2
BZM	Map	Blitzkrieg