| 1 | AB | Google | Google Android Debug Bridge Backup Format |
| 2 | ABK | N/A | Automatic Backup Format |
| 3 | AJA | AJC Systems Ltd. | Backup Revision Control Archive |
| 4 | ARM | Oracle Corporation | MySQL Archive Storage Engine Metadata |
| 5 | ASD | Microsoft | Word AutoSave Format |
|
| 6 | ASHDISC | Ashampoo | Ashampoo Burning Studio Image |
| 7 | BACKUPDB | Apple | Apple Time Machine Backup Folder Format |
| 8 | BBB | Research In Motion | BlackBerry Backup (post 2012) Format |
| 9 | BDB | Microsoft | Microsoft Works Database Backup Format |
| 10 | BK! | Corel Corporation | Corel WordPerfect Document Backup |
| 11 | BK1 | Autodesk | Autodesk Backup Format |
| 12 | BK2 | Microsoft | Windows Indexing Service Data Format |
| 13 | BK3 | Corel Corporation | Corel WordPerfect Document Backup |
| 14 | BK5 | Corel Corporation | Corel WordPerfect Document Backup |
| 15 | BK6 | Corel Corporation | Corel WordPerfect Document Backup |
| 16 | BK7 | Corel Corporation | Corel WordPerfect Document Backup |
| 17 | BK8 | Corel Corporation | Corel WordPerfect Document Backup |
| 18 | BK9 | Corel Corporation | Corel WordPerfect Document Backup |
| 19 | BKF | Microsoft | Windows Backup Utility Format |
| 20 | BKI | IBM | IBM BookManager Backup Index |
| 21 | BKPI | N/A | Synology Hyper Backup image |
| 22 | BUD | Microsoft | Binary Printer Description Format |
| 23 | CRDS | Microsoft | Windows CardSpace Backup Format |
| 24 | CTX | Valve | Valve ICE Encoded Script |
| 25 | DBK | Amrak Software | OrCAD Schematic Capture Backup Format |
| 26 | DOS | Microsoft Corporation | WIN95/ DOS 7 System |
| 27 | EX_ | Microsoft | Compressed Executable Format |
| 28 | FFU | Microsoft Corporation | Windows Phone Full Flash Update |
| 29 | FPBF | Apple | Mac OS X Burn Folder |
| 30 | GBM | Genie-Soft Corporation | Genie Backup Manager Archive |
| 31 | GBP | Genie-Soft | Gerber Bottom Paste Mask Output Format |
| 32 | IBZ | Oracle Corporation | MySQL InnoDB Database Table Compressed Backup |
| 33 | IPD | Research In Motion | BlackBerry Backup Format |
| 34 | ISO | International Organization for Standardization | Disc Image Format |
| 35 | JPA | Akeeba | Joomla Installation Backup |
| 36 | JRS | Microsoft | Exchange Reserve Transaction Log Format |
| 37 | JSONLZ4 | Mozilla | Compressed Firefox User Profile Data File |
| 38 | MBF | Microsoft | Microsoft Money Backup Format |
| 39 | MDBACKUP | Apple | IPhone Data Backup Format |
| 40 | MDDATA | Apple | IPhone Backup Format |
| 41 | MDINFO | Apple | IPhone Backup Information Format |
| 42 | MOBILEBACKUPS | N/A | Apple macOS backup |
| 43 | MOZ-BACKUP | Mozilla Corporation | Mozilla Backup |
| 44 | MPB | Franz Josef Wechselberger | MyPhoneExplorer Backup Format |
| 45 | NBU | Nokia | Nokia Phone Backup Format |
| 46 | NCO | Nero | Nero BackItUp Format |
| 47 | NFB | Nokia | Nokia Phone Backup Format |
| 48 | NFC | Nokia | Nokia Phone Backup Copy Format |
| 49 | NHV | Nero AG | Nero HD-BURN-Video Compilation |
| 50 | NLPB | N/A | Navicat for SQLite backup profile |
| 51 | NMPB | N/A | Navicat for MariaDB backup profile |
| 52 | NPB | PremiumSoft CyberTech Ltd. | Navicat For MySQL Backup Profile |
| 53 | NR4 | Nero AG | Nero CD-ROM (AAC) Compilation |
| 54 | NRB | Nero | Nero CD-ROM Boot Compilation |
| 55 | NRBAK | The Neat Company | Neat Backup |
| 56 | NRC | Nero | Nero Disc Compilation Format |
| 57 | NRD | Nero | Nero DVD-Video Compilation Format |
| 58 | NRG | Nero | Nero CD/DVD Image Format |
| 59 | NRH | Nero AG | Nero Hybrid CD-ROM Compilation |
| 60 | NRI | Nero | Nero ISO CD Compilation Format |
| 61 | NRM | Nero | Nero Mixed Mode CD Compilation |
| 62 | NRS | Nero AG | Nero CD-ROM Boot EFI Compilation Format |
| 63 | NRU | Nero | Nero UDF CD-ROM Compilation |
| 64 | NWBAK | The Neat Company | Neat Backup |
| 65 | PARTIMG | N/A | Partimage Format |
| 66 | PARTIMG.BZ2 | Various Linux developers | Partimage Disk Image |
| 67 | PARTIMG.GZ | Various Linux developers | Partimage Disk Image |
| 68 | PSC | PremiumSoft CyberTech Ltd. | Navicat MySQL Database Compressed Backup |
| 69 | PTB | N/A | Power Tab Format |
| 70 | PURGEABLE | Apple, Inc. | Time Machine Corrupted Backup |
| 71 | QDB | Intuit | Quicken 5 & 6 Data Format |
| 72 | QIC | Microsoft | Windows Backup Format |
| 73 | QUICKENBACKUP | Intuit | Quicken Essentials For Mac Backup Format |
| 74 | RAR | Eugene Roshal | WinRAR Compressed Archive |
| 75 | RPMNEW | Red Hat | Red Hat Package New Default Configuration |
| 76 | RPMORIG | N/A | RPM Package Manager package backup |
| 77 | RPMSAVE | Red hat | Red Hat Package Saved Configuration |
| 78 | SBF | N/A | Android System Format |
| 79 | SBU | Samsung Group | Samsung Kies Backup |
| 80 | SIK | Microsoft Corporation | Microsoft Word Backup |
| 81 | SPARSEBUNDLE | Apple | Mac OS X Sparse Bundle |
| 82 | SPARSEIMAGE | Apple | Mac OS X Sparse Image |
| 83 | SVD | Microsoft | Microsoft Word Document Autosave Format |
| 84 | SVS | N/A | Microsoft Word Style Sheet Autosave Format |
| 85 | SYNCDB | Apple, Inc. | ITunes Saved Contact Database |
| 86 | UDIF | Apple, Inc. | Apple Mac OS X Universal Disk Image Format |
| 87 | VMF_AUTOSAVE | Valve | Valve Hammer Editor Autosave Format |
| 88 | WA~ | N/A | Microsoft Address Book |
| 89 | WBCAT | Microsoft | Windows Backup Catalog Format |
| 90 | WBFS | Waninkoko | Wii Backup Format System Format |
| 91 | WBK | Microsoft | Word Document Backup |
| 92 | WBVERIFY | Microsoft Corporation | Microsoft Windows Backup |
| 93 | WCF | N/A | WebEx Saved Chat Session |
| 94 | WHB | WindSolutions | Apple IPod Backup Image |
| 95 | WIM | Microsoft | Windows Imaging Format |
| 96 | XAR | MAGIX | Xara Xtreme Drawing |
| 97 | XLK | Microsoft | Excel Backup Format |
| 98 | ZIP | Phil Katz | Zipped Format |
| 99 | _DOCX | N/A | Renamed Microsoft Word Document |
