| bbx | BrainBox Neural Net Data |
| bbz | BerryBuzz Backup Data |
| bc | Adobe Bridge Cache Data |
| bc | BitComet File |
| bc | Sierra Print Artist Business Card |
| bc! | BitComet File |
| bc2 | Blue Kenue Boundary Conditions Data |
| 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 | Adobe PageMaker Color Library |
| bcf | Belarc Advisor Content Data |
| bcf | BIM Collaboration Format Data |
| bcf | Binary Counterpart Data |
| bcf | MODFLOW Block-Centered Flow Package |
| bcf | MyLabel Designer Deluxe Data |
| bcf2 | Binary Counterpart Data |
| bcg | BusinessCards MX Gradients Data |
| bch | dBASE Batch Process Object |
| bch | Eclipse IDE Commands Data |
| bch | Oracle Documaker Batch |
| bch | PCCharge Offline Transaction Log |
| bci | Belarc Advisor Report |
| bck | HP OpenVMS Backup File |
| bckp | Ad-Aware Quarantined File |
| bckup | Time Machine Backup Data |
| bcl | Illumina CASAVA Base Call |
| bcm | Adobe Bridge Cache Data |
| bcm | Microsoft Office Business Contact Manager Data |
| bcm | Microsoft Works Communications Script Backup |
| bcmap | Adobe Acrobat Binary Character Mapping Data |
| bcmdl | Nintendo 3DS BCMDL Model Data |
