| 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 Japan, are the most likely to use External Format Language File files. Frequently these users are visiting our web site using Google Chrome.
 | Encryptafile by XenoSystems |
 | NFBTRANS by National Federation of the Blind |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PAD | Swiftpage, Inc. | Uncommon Files | ACT! Database Pointer File |
| .SUM | AmsterCHEM | Data Files | Scilab Unit Operation Model File |
| .LKH | Unknown Developer | Uncommon Files | Worm.Generic.LKH Virus File |
| .HWA | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .BER | Unknown Developer | Uncommon Files | German Bericht Report File |
| .AIM | AIMMS B.V. | Text Files | AIMMS ASCII Model File |
| .X3M | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .BDCFG | Unknown Developer | Uncommon Files | Unknown File Type |
| .NT_ | Unknown Developer | Uncommon Files | Unknown File Type |
| .KPC | Unknown Developer | Uncommon Files | Unknown File Type |
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