Penny's OS (S 2)

 
or BAB or BabelDisc
or BackTrack or bada
or Baltix or Banyan VINES
or Basic Executive System
or BasicLinux or Basic Realtime Monitor
or Bayanihan or BCM
or BCOS or BCS
or BeaFanatiX or BearOps
or BeatriX or Beehive Linux
or BEERnix or Behördendesktop
or BeIA or BeleniX
or Bent Linux or BeOS
or Berkeley Timesharing System or Berkeley UNIX
or Berry Linux or BeRTOS
or BEST or BESYS
or Biadix or Big Linux
or Billix or BinToo
or BioBrew or Bioknoppix
or BK-11 or BK-OS
or BKUNIX or BKY
or BlackBerry OS or BlackBSD
or Black Cat Linux or blackPanther
or BlackRhino or blag
or BlankOn or Blin Linux
or BLIS/COBOL or BLLOS
or BLMX or Bloody Stupid
or Bluebottle or Blue Cat Linux
or Blue Eyed OS or BlueLinux
or Bluewall GNU/Linux or Bluewhite64
or BMS or BMW Nav
or BNR/2 or B1
or Bonzai Linux or Bootable Cluster CD
or BOS or BOS 1810
or BOS/5 or BOS/NET
or BOSS or BOSS-15
or BOSS Linux or BOS/360
or BowlFish or BoxOS
or bpmk or BPS-99
or brickOS or BRiX
or BRLSpeak or BRL Unix
or Browser OS or BSD
or BSDeviant or BSD/Net
or BSD/OS or BSD/386
or BS1000 or BSO/RTOS
or BS600 or BS2000
or BTM or BTOS
or BTRONor B2D Linux
or Buddhabuntu or Buffalo Linux
or BugnuX or BugOS
or Buildix or BU Linux
or Burapha or Burroughs MCP
or BW-DOS or Byzantine OS
or BzerkCD