How to open FOLDER files

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

What is a FOLDER file?

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

While we do not yet describe the FOLDER 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 FOLDER 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 FOLDER

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

Stuffit ExpanderStuffit ExpanderUser submitted
progeCAD ProfessionalprogeCAD ProfessionalUser submitted
progeCAD Professional EnglishprogeCAD Professional EnglishUser submitted
TimetableTimetableUser submitted
SingularLogic Report ViewerSingularLogic Report ViewerUser submitted
Embarcadero RadPHP XE2Embarcadero RadPHP XE2User submitted
progeCAD StandardprogeCAD StandardUser submitted
OAGCDPOAGCDPUser submitted
SewWhat-Pro ApplicationSewWhat-Pro ApplicationUser submitted
Any Video Converter ProfessionalAny Video Converter ProfessionalUser submitted

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 FOLDER-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 FOLDER-files. If you know one, please use the Suggest link below and tell us about it!