| .bin |
Sega Genesis Game ROM |
| .bik |
Bink Video File |
| .bsf |
Blu-ray AVC Video File |
| .bdm |
AVCHD Information File |
| .box |
E-mail Mailbox |
| .bmc |
Bitmap Cache File |
| .bdmv |
Blu-ray Disc Movie Information File |
| .bmk |
BillMinder Backup File |
| .blz |
N-Gage Mobile Video Game File |
| .bdt3 |
BEEDOCS Timeline 3D 3 Document |
| .byu |
Brigham Young University Movie File |
| .bix |
Civilization 3 Scenario File |
| .bs4 |
Mikogo Session Video Recording |
| .bnp |
Sony Camcorder Video Data File |
| .bdt2 |
BEEDOCS Timeline 3D 2 Document |
| .bvr |
Blue Iris Video |
| .bu |
Samsung CCTV Video File |
| .cpi |
AVCHD Video Clip Information File |
| .camproj |
Camtasia Studio Project |
| .cst |
Manga Studio Story File |
| .camrec |
Camtasia Studio Screen Recording |
| .clpi |
Blu-ray Clip Information File |
| .clk |
Corel R.A.V.E Project File |
| .cmproj |
Camtasia Project File |