| .bbc |
BBC BASIC Data File |
| .bk |
Backup file, FrameMaker Book File |
| .bkf |
Windows Backup Utility File |
| .bmc |
Bitmap Cache File |
| .bfc |
Windows Briefcase File |
| .bst |
BibTeX Style Document |
| .bcm |
Business Contact Manager File |
| .bcmx |
Business Contact Manager Customization |
| .br4 |
Bryce 4 Scene File |
| .boc |
EasyWord Big Document |
| .bc |
Adobe Bridge Cache File |
| .bap |
Blaze Audio Wave Information File |
| .bb |
Blitz Source Code File |
| .bkc |
Backup4all Backup Catalog |
| .bdd |
CARA Sound Radiation Data File |
| .bean |
Bean Rich Text Document |
| .brd |
EAGLE Circuit Board File |
| .bs2 |
BASIC Stamp 2 Code File |
| .bc! |
BitComet Incomplete File |
| .btm |
BizTalk Map File |
| .bkk |
BookBuddi eBook File |
| .bci |
Belarc Advisor Report File |
| .bwa |
BlindWrite Disk Information File |
| .bws |
BlindWrite Sub Code File |