X File - opening and understanding

Did your computer fail to open an X file? We explain what they are used for and recommend software that we know can open or otherwise handle your .X files.

What is an X file?

The .x file extension is most commonly associated with Lex source code files. These files contain source code that has been written in the Lex programming language. The X files can be used to create a C program using a lex utility that is included with most Unix distributions.

The .x file extension is also used for Alysis SuperDisk self-extracting archive files, Microsoft Direct-X SDK files, Stardent AVS X bitmap image files, X-file animation file Direct3D files, FPS Creator Model files, Chemical modeller output files, XBLite program files and X11 server import image files.

How to open X files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension X for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 10 different X openers which you will find listed below.

Suggest another file format using extension X

While we know of one file format using the .X file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .X file.

Various viewers for this file format

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

Microsoft DirectXMicrosoft DirectXUser submitted
Stuffit ExpanderStuffit ExpanderUser submitted
Atmel StudioAtmel StudioUser submitted
Any Video Converter ProfessionalAny Video Converter ProfessionalUser submitted
progeCAD ProfessionalprogeCAD ProfessionalUser submitted
Atmel AVRStudioAtmel AVRStudioUser submitted
Flash Movie PlayerFlash Movie PlayerUser submitted
progeCAD Professional EnglishprogeCAD Professional EnglishUser submitted
AvrStudio ApplicationAvrStudio ApplicationUser submitted
Microsoft OfficeMicrosoft OfficeUser submitted
We have not verified any software that we know for certain will work with X-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with X-files. If you know one, please use the 'Suggest a program' link below and tell us about it!