.X File Extension

2 file types use the .x file extension.

DirectX Model File

Developer Microsoft
4.2  |  54 Votes

What is an X file?

3D image file used by DirectX technology, which is often used for rendering 3D graphics in games; may contain specifications for meshes, textures, animations, and objects; can be exported using the DirectX SDK plugins for 3ds Max and Maya, or with custom exporters for programs such as Blender and DeleD.

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Programs that open or reference X files


Lex Source Code File

Developer N/A
3.7  |  16 Votes

Source code written in the Lex programming language (a standard lexical analyzer for Unix); may be processed with the lex utility included with most Unix distributions to generate a C program; the output is often written to a file named "lex.yy.c."

More Information

Lex source code files more often use the .L extension.

Programs that open X files

Lex  —  Discontinued

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