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Having problems opening a FO file?

Learn about files with extension FO

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FO File

What are FO files and how to open them

Are you having problems opening a FO file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your FO files.

What is a FO file?

A .FO file is an XSL Formatting Objects file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open FO files

Important: Different programs may use files with the FO file extension for different purposes, so unless you are sure which format your FO file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested seven different FO openers which you will find listed below.

Last updated: March 10, 2023

Various apps that use files with this extension

These apps are known to open certain types of FO files. Remember, different programs may use FO files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Software602 Form FillerSoftware602 Form FillerVerified
602XML Filler602XML FillerUser submitted
Oxygen XML EditorOxygen XML EditorUser submitted
Old Mutual Front OfficeOld Mutual Front OfficeUser submitted
602XML Designer Express602XML Designer ExpressUser submitted
Oxygen XML DeveloperOxygen XML DeveloperUser submitted
XF DesignerXF DesignerUser submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about FO file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.