Whether you’re having trouble opening an X file or just want to explore its contents, let’s delve into the properties of these files and provide information on how to open or handle X files.

What is an X file?

X files have multiple uses, and one common association is with Lex Source Code. Lex source code files, denoted by the .x file extension, contain source code written in the Lex syntax.
Lex is a program that generates a lexical analyzer based on an input Lex file. This is often used by programmers when creating compilers for other programming languages. Lex files help define the rules for parsing and tokenizing the input source code.

How to open X files

To open X files, you may consider using:

1. Text Editors:

2. Lex Compiler:

3. Integrated Development Environments (IDEs):

Various apps that use files with this extension

Apps known to open X files include:
Atmel Studio
progeCAD Professional
Atmel AVRStudio
Microsoft Office
Untis