| .btapp |
uTorrent App |
| .blz |
N-Gage Mobile Video Game File |
| .bsc |
Visual Studio Source Browser Information File |
| .blk |
AutoCAD Block Template File |
| .blw |
Adobe Photoshop Black and White Presets File |
| .brx |
BREW Application Resource File |
| .bfs |
FlatOut Game Data File |
| .bzabw |
Compressed AbiWord Document |
| .bff |
Backup File Format |
| .br7 |
Bryce 7 Scene File |
| .blp |
Blizzard Texture File |
| .brg |
Age of Mythology Model File |
| .blf |
Binary logging format file, Common Log File System |
| .bblm |
BBEdit Language Module |
| .bbb |
BlackBerry Mobile Phone Backup File |
| .blend1 |
Blender Document Backup File |
| .bil |
ESRI BIL File |
| .bit |
FinalCrypt Encrypted Data File |
| .beam |
Compiled Erlang File |
| .b1 |
B1 Compressed Archive |
| .brn |
BrainStorm Data File |
| .blogthis |
Windows Live Writer Data File |
| .bdt3 |
BEEDOCS Timeline 3D 3 Document |
| .bmz |
Portal Bonus Map Zip File |