FS File Extension

The FS file extension was created by Apple and is also known as the Mac OS X File System Plug-in. FS is classified as a Plugin Files and File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined. You can open FS files in SAi Flexi FAMILY program.

Mac OS X File System Plug-in File Type

Mac OS X File System Plug-in File Type
Extension .fs
Developer Apple
Popularity 5.0 (1 Votes)
Mime Type mime-type/not.available
Default Program SAi Flexi FAMILY
Category Plugin Files
Format N/A
Updated 6/1/2025

What is a FS File Type?

Examples of file system plugins include: ", hfs.fs, ", msdos.fs, ", ", cd9660.fs, and cd9660.fs. Each FS file is saved as a Mac OS X package, but is defined as a plugin. By default, they are stored in the quot file; / System / Library / Filesystems &" directory.NOTE: FS files should not be opened manually since it is a system file.

Free Online FS Tools & Apps

Access powerful and secure free online FS tools to convert, view, edit, merge, split, and compare FS files — all without installing any software. Our tools support the .FS (Mac OS X File System Plug-in) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your FS files directly from your device with ease.

FS Files Common Issues

There are few common issues with the Mac OS X File System Plug-in .FS=10904 File Extensions while opening the .FS=10904 files on Windows and MacOs, we have solution to those issues such as:

Can't Open FS Files?

  1. You must have supported software programs installed for Mac OS X File System Plug-in on your system such as SAi Flexi FAMILY.
  2. Associate default Sai Flexi Family SAi Flexi FAMILY program for *.fs (Mac OS X File System Plug-in) files.

    Associate FS Default Program on Windows
    1. Right-click a *.FS (e.g example.fs) file and click Open With.
    2. In the Open with dialog box, click Sai Flexi Family SAi Flexi FAMILY program Or click Browse to locate the program (*.exe) that you want.
    3. Select check box for Always use this app to open .fs files.

    Associate FS Default Program on MacOs
    1. Click *.FS (e.g example.fs) file and click information -> Open With.
    2. In the programs list, click Sai Flexi Family SAi Flexi FAMILY program Or other appropriate program that you want.
    3. Confirm Change for all... and Contine.
    4. A message will appear "This change will be applied to all files with .SAi Flexi FAMILY extension. By clicking Continue you confirm your selection", click Contine to apply changes.

Related FS File Extensions

FS default file extension is .FS and other similer related extensions are:

All Platform Software Programs for FS File Extension

List of all softwares that can open the FS files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Microsoft Windows logo image Open FS File on Windows

Software License Developer
SAi Flexi FAMILY image. SAi Flexi FAMILY 000 for Windows Free Trial SAi Flexi FAMILY
Microsoft Visual Studio image. Microsoft Visual Studio 2019 for Windows Commercial Microsoft

MacOs logo image - FileProInfo.comOpen FS File on Mac OS

Software License Developer
Apple OS X image. Apple OS X CATALINA for MacOs Commercial Apple
SAi Flexi FAMILY image. SAi Flexi FAMILY 000 for MacOs Free Trial SAi Flexi FAMILY

Linux logo image - FileProInfo.comOpen FS file on Linux

Software License Developer

Website logo image - FileProInfo.comOpen FS file on Web

Software License Developer

iOS logo image - FileProInfo.comOpen FS file on iOS

Software License Developer

Android logo image - FileProInfo.comOpen FS file on Android

Software License Developer

About Licensing

  1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
  2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
  3. Free+ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
  4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
  5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

FS file extension icon image.About FS - Mac OS X File System Plug-in

FileProInfo is to help you understand about the Mac OS X File System Plug-in with *.FS suffix, and provide the complete detail as how to open, edit, convert, merge, split and compare it with other related software programs, software download links and free online apps and tools.

Our professional team members at FileProInfo have been individually researched and verified the details for FS. We want to be 100% accurate and publish the information about file formats, tools, apps and software programs that we have tested and validated.

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

Updated 6/1/2025