| brw | PhotoCool Thumbnail Cache |
| brx | BricsCAD Runtime Extension |
| brx | Epicor Portal Backup Data |
| bs4 | Mikogo Recorded Session |
| bs7 | Windows 7 Boot Updater Skin |
| bsb | NOAA Nautical Charts |
| bsb | SWAT Sub-basin Output Data |
| bsb | Xilinx Base System Builder Playback File |
| bsc | Argus ONE Modflow GUI-PIE Data |
| bsc | Balanced Scorecard Designer Data |
| bsc | BASin Code Format Data |
| bsca | IBM System/3 BSCA Data |
| bsch | Bartco VMS Message Schedule Data |
| bscomp | Bootstrap Studio Component Data |
| bscs | Balanced Scorecard Designer Data |
| bsct | Balanced Scorecard Designer Strategy Data |
| bsd | BASin Data Format Data |
| bsd | FacetWin Backup Set Description |
| bsd | Xilinx BSDL File |
| bsdf | Zemax Scattering Distribution Data |
| bsdiff | Binary DIFF Data |
| bsdl | Xilinx BSDL File |
| bse | CRiSP Harvest Base Data |
| bsh | Art of Illusion 3D Script |
| bsig | ClamAV Binary Signature |
| bsj | SpliceV Backsplice Junctions Data |
| bsk | Blaise Database BSK Data |
| bsk | Bryce Skies Data |
| bsk | Nero SecurDisc Private Key |
| bsm | BeerSmith Mash Profile |
