How to open __S files

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

What is a __S file?

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

While we do not yet describe the __S file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.

We are continually working on adding more file type descriptions to the site, so if you have information about __S files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!

Generic __S

These apps are known to open certain types of __S files. Since many different programs may use __S files for different purposes, you may need to try a few of the apps to open your specific __S file.

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Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

We have not verified any programs that we know for certain can work with __S-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with __S-files. If you know one, please use the Suggest link below and tell us about it!