.EXTR File Extension

COW App Extractor File

Developer IXI International
1.3  |  3 Votes

What is an EXTR file?

An EXTR file is an encrypted folder used by COW, which is an operating system for select mobile devices based on Linux that was discontinued before being released to the public. It contains a program and a Main.py script that stores instructions for where the COW system installer should install the program. EXTR files are downloaded to a mobile device from the COW App Store and then decrypted and opened automatically by the COW system when installing the downloaded program.

More Information

Since the COW operating system is no longer developed, you will not encounter COW App Extractor EXTR files. If you do come across a file with the .extr file extension, it is saved in a different format than the COW App Extractor format.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open EXTR files

Not meant to be opened
Not meant to be opened
Not meant to be opened

Verified by FileInfo.com

The FileInfo.com team has independently researched the COW App Extractor file format and Mac, Windows, and Linux apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.