| boo | Boo Encoded Data |
| bov | VisIt BOV File |
| bow | Back Orifice 2K Workspace |
| box | Kodicom Video Metadata |
| box | CARA Loudspeaker Design |
| bp2 | Autodesk AutoCAD Batch Plot File |
| bp3 | SmartWare Definition Backup |
| bp3 | Autodesk AutoCAD Batch Plot File |
| bpa | StorageSync Backup Archive |
| bpb | Sybase PowerDesigner Business Process Model Backup |
| bpd | Business Plan Pro Plan |
| bpdx | Business Plan Pro Plan |
| bpf | Business Plan Pro Formula |
| bpf | F-Secure Base Policy File |
| bpj | Boxsim Simulation Data |
| bpk | Blaise Database BPK Data |
| bpm | Bizagi Process Modeler File |
| bpm | Sybase PowerDesigner Business Process Model |
| bpmc | Bizagi Process Modeler Team Collaboration File |
| bpmx | Business Process Model and Notation Data |
| bpp | Clarion App Backup |
| bpw | Intuit Quickbooks Business Planner File |
| bpx | BusiPlan Data File |
| bqf | WaveWatch III Binary Quadrupled Data |
| bqs | BillQuick Database |
| bqy | Oracle Hyperion Interactive Reporting Document |
| br25 | BMW iDrive Multimedia Data |
| bragg | RMCProfile Bragg Scattering Data |
| brain | Personal Brain v6 File |
| brb | Bryce Object Export |
