Having problems opening a X file?

We have programs that can open or convert your X files.

Opening X files

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

What is a 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.

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.

About File Extension X

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the X file format or software that uses files with the X suffix, please do get in touch - we would love hearing from you.