Files with lex file extension can be generally found as lexicons, dictionary or vocabulary files used in many programs that offer spell-checking support.

There are 3 other file types using
the LEX file extension!

empty icon.lex - HP-Basic language extension

lex icon.lex - Microsoft SharePoint Server 2007 temporary data

empty icon.lex - Lex or Flex data

Detailed description

Software that open lex file

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LEX file extension - Lexicon data

What is lex file? How to open lex files?

File type specification:

Various data file type icon Various data file type

The lex file extension is commonly used for lexicon files. These files usually serve same purpose as Dictionary  or Vocabulary files - they store words or phrases that can be used in a program, typically for spell-checking.

These .lex files are used in numerous programs, like Adobe software, Microsoft Windows, Microsoft Office but in different formats.

Updated: April 22, 2024

The default software associated to open lex file:

Adobe Acrobat icon

Adobe Systems Incorporated logoAdobe Acrobat  Microsoft Windows software

Company or developer:
Adobe Systems Incorporated

Adobe Acrobat is fully featured document solution that works with PDF format and is able of both opening and editing of existing PDF documents, or creating new ones from scratch. Acrobat DC is the last version after Acrobat XI. You can purchase it as standalone desktop software. 

Microsoft Windows icon

Microsoft Corporation logoMicrosoft Windows  Microsoft Windows software

Company or developer:
Microsoft Corporation

A family of operating systems developed by the Microsoft Corp. The first Windows was released in 1985 as a GUI add-on to MS-DOS. MS-DOS based Windows versions were developed to 2000, when was released the last version called Windows ME. Windows based on NT core started in 1993. Windows NT family are developed to these days, the latest version is called Microsoft Windows 11.

Microsoft Office icon

Microsoft Corporation logoMicrosoft Office  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Office is popular productivity suite for Microsoft Windows. Microsoft Office contains a set of applications and services used to work with documents (Microsoft Word), spreadsheets (Microsoft Excel), presentations (Microsoft PowerPoint), databases (Microsoft Access) etc..

Microsoft Office can be also used to manage e-mail accounts, tasks, calendars and contacts (Microsoft Outlook). 

Help how to open:

Usually, you can import lexicon files to their original programs only.

How to convert:

Sometimes users can export or transform lexicons / dictionaries between various formats.

List of recommended software applications associated to the .lex file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open lex file, edit lex file, convert lex file, view lex file, play lex file etc. (if exist software for corresponding action in's database).

Unspecified and all other actions for computer programs working with lex file - Lexicon data

Click on the software link(s) for more information. Suggested software applications use lex file type for internal purposes and/or also by different way than common edit or open lex file actions.

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