How to open FEF files

Did your computer fail to open a FEF file? We explain what FEF files are and recommend software that we know can open or convert your files.

What is a FEF file?

The FEF file extension indicates to your device which app can open the file. However, different programs may use the FEF file type for different types of data.

We are aware of 1 different use of the FEF extension, which you can read more about below.

Patton-Patton Flow Charting 3 Export Filter

Through our analysis of FEF files, we know that one use of the format is Patton-Patton Flow Charting 3 Export Filter. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

We have not verified any programs yet that works with this specific format. If you know any, please use the 'Suggest a program' link below. Thanks!