| boxer | Boxer for Mac Game Archive |
| boz | BZIP Over ZIP Compressed Archive |
| bqy | Binary II Data |
| Shrinkit NuFX Archive with BLU Header |
| br | Brotli Compressed File |
| br1 | Total Commander Cached Button Bar Icons |
| br2 | Total Commander Cached Button Bar Icons |
| brainzip | Personal Brain v6 BrainZip Archive |
| PersonalBrain Mind Map Archive |
| bsc | BINSCII Archive |
| bsq | BINSCII Archive |
| btc | Becker Tools Compressed Archive |
| btinstall | uTorrent Install Package |
| bu | SAP Business One BackUp Data |
| bulk | BulkZip Compressed Archive |
| bulk-001 | BulkZip Splitted Archive |
| bulk-002 | BulkZip Splitted Archive |
| bulk-003 | BulkZip Splitted Archive |
| bulk-004 | BulkZip Splitted Archive |
| bulk-005 | BulkZip Splitted Archive |
| bundle | Git Bundle Archive |
| bxpck | BoxedApp Package |
| bxy | Shrinkit NuFX Archive with Binary II Header |
| bz | BZip Compressed Data |
| bz2 | BZip2 Compressed Data |
| bza | IZArc BGA Archive |
| bzip | BZip Compressed Data |
| bzip2 | BZip2 Compressed Data |
| bzp | ProSystem fx Engagement Binder Backup Package |
| bzp2 | BZip2 Compressed Data |
| c00 | WinAce Archive |
| c000 | Genie Backup Manager Compressed Split Backup Archive |
| c01 | WinAce Archive |
| c02 | WinAce Archive |
| c03 | WinAce Archive |
| c04 | WinAce Archive |
| c05 | WinAce Archive |
| c06 | WinAce Archive |
| c07 | WinAce Archive |
| c08 | WinAce Archive |
| c09 | WinAce Archive |
| c10 | WinAce Archive |
| ca0 | Borland Installer Packed Data |
| caa | CleanApp Archive |
| cab | Microsoft Cabinet File |
| cam-pkg | CircuitCAM Design Package |
| cap | JavaCard Converted Applet |
| car | Oracle Documaker CAR Archive |
| SAPCAR Archive |
| carb | Apple Carbon Package |
| carc | Nintendo DS Compressed Archive |
| caz | CAZIPXP Compressed Archive |
| ca_ | Compressed Microsoft Cabinet File |
| cbi | Crossbeam XMS Installation Package |
| cbu | Comodo Backup Archive |
| ccgame | XNA Game Studio Creators Club Package |
| ccip | Curse Client Install Package |
| ccslider | Character Creator Morph Slider Data |
| ccz | CommCare Package |
| cfs | Compact File Set |
| cgdb | Microsoft Office Clip Art Package |
| chc | GFI MailEssentials Patch |
| chk | TomTom Navigator Voices Archive |
| chksplit | Incredible Bee Archiver Split Checksum |
| chz | ChArc Compressed Archive |
| ci3 | Crimson 3 Image |
| cig | Fastback Plus Compressed Backup |
| cjl | DigitalHIWAY Concatenated JPEG Library |
| ckp | Certainkey Valise Light Archive |
| cl2arc | Comic Life 2 Document Archive |
| cmf | HP Connected Backup Data |
| cmp | Microsoft SharePoint Content Migration Package |
| PKWare Data Compression Library Archive |
| THEOS Compressed Archive |
| cmpack | Aptify CM Tool Package |
| cnr | CNR Installation Package |
| cod | BlackBerry COD Archive |
| colpkg | Anki Fashcard Collection Package |
| costylepack | Capture One Style Package |
| cp9 | ChoicePoint Encrypted |
