The EFS file extension is used in operating systems like Mac OS and Windows. The Chicken Systems Translator program handles EFS files. EFS files store data like audio files. The format was developed by unknown developer. It was likely created with Chicken Systems Translator.
EFS files are considered GIS files. But they can also be audio or data files. They can be viewed in Windows. EFS files work on desktops and mobiles. They have a low popularity rating. This means many devices don’t support them.
The Ensoniq SQ80 used the EFS file extension. The audio format is now obsolete. The product was discontinued.
EFS files are popular in Japan. They are common on Windows 10. The ESRI Spatial Binary File type uses the EFS extension. Microsoft made this file type.
Sometimes Active Undelete recovers EFS files. It might add EFS to the extension of recovered files. You can remove EFS to view the file.
EFS is used by Effective File Search. It indexes and searches files. EFS is also used by EasyFlow software. EasyFlow makes diagrams and flowcharts.
Windows File Explorer
Advanced EFS Data Recovery