x

X may be an extension of Direct X 3d files, Fps creator or Lex programming system. You can open these files with several softwares.

There are 3 different softwares that use this extension. 

1- It may be a 3d modelling format that comes from Direct X SDK package.  

2- It also can be FPS creator 3d modelling file. You can get detailed information from its web page.

3-
 It can be Lex programming system source code. 

What to use x

DirectX

which page related to x file

https://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=35

x Related Searches

You can check related links about x fileextension.