| bbv | PPLive Cache File |
| bbw | Band-in-a-Box Interface |
| bbx | BrainBox Neural Net Data |
| bc | BitComet File |
| bc! | BitComet File |
| bc3 | FIEBDC Database |
| bc6 | Cashflow Manager 2006 Backup |
| bc7 | Cashflow Manager v7 Backup File |
| bc8 | Cashflow Manager v8 Backup File |
| bc9 | Cashflow Manager v9 Backup |
| bcd | ARM RealView Board/Chip Definition File |
| bcf | Binary Counterpart Data |
| bcf | MyLabel Designer Deluxe Data |
| bcf | BIM Collaboration Format Data |
| bcf2 | Binary Counterpart Data |
| bcg | BusinessCards MX Gradients Data |
| bch | PCCharge Offline Transaction Log |
| bch | Oracle Documaker Batch |
| bci | Belarc Advisor Report |
| bck | HP OpenVMS Backup File |
| bckp | Ad-Aware Quarantined File |
| bcl | Illumina CASAVA Base Call |
| bcm | Microsoft Works Communications Script Backup |
| bcm | Microsoft Office Business Contact Manager Data |
| bcmdl | Nintendo 3DS BCMDL Model Data |
| bcml | Biological Connection Markup Language Document |
| bcmr | BC Framer Data |
| bcmx | Microsoft Office Business Contact Manager Customization |
| bcp | Microsoft SQL Server Data Replication Data File |
| bcpkg | Beyond Compare Settings Package |
| bcs | BusinessCards MX Style |
| bcss | Beyond Compare Snapshot Data |
| bct | Adobe Bridge Thumbnail Cache |
| bcuri | BitComet URI Data |
| bcx | Beam-Report Standard Definition Data |