| File Extension: | EFL |
| File Type Description: | External Format Language File |
| File Type Developer: | National Federation of the Blind |
| Primary Associated Software: | NFBTRANS |
| Primary Software Developer: | National Federation of the Blind |
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Release of the Encryptafile software program prompted the development of the External Format Language File file type by XenoSystems. Our internal web tracking data indicates that Windows 10 operating system users, and those living in United States, are the most likely to use External Format Language File files. Frequently these users are visiting our web site using Google Chrome.
 | NFBTRANS by National Federation of the Blind |
 | Encryptafile by XenoSystems |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .SBC | Microsoft Corporation | Uncommon Files | Office Accounting Company Shortcut File |
| .JSZ | Unknown Developer | Uncommon Files | Unknown File Type |
| .MTD | Musicnotes | Uncommon Files | Musicnotes Digital Sheet Music File |
| .BFC | Microsoft Corporation | Uncommon Files | Windows Briefcase File |
| .MJDOC | Mariner Software | Uncommon Files | MacJournal Document |
| .P1I | IBM | Uncommon Files | IBM Voice Type Language Newuser File |
| .RPTTEMPLAT | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .BGT | FKJ Software | Uncommon Files | Graphics Accounts Budget Data File |
| .BAI | B2W Software | Plugin Files | BUILD2WIN Add-in |
| .C61 | Unknown Developer | Uncommon Files | Uncommon File Extension |
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