An adn file extension is related to the Lotus 1-2-3 and used for its add-in files.

There is one other file type using
the ADN file extension!

adn icon.adn - Microsoft Access blank project template

Detailed description

Software that open adn file

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ADN file extension - Lotus 1-2-3 add-in

What is adn file? How to open adn files?

File type specification:

Plugin, addon file type icon Plugin, addon file type

The adn file extension is associated with the Lotus 1-2-3, a spreadsheet editing tool for Microsoft Windows, MS-DOS, Mac OS and others operating systems.

The adn file stores add-in file (between an overlay and a DLL).

The Lotus 1-2-3 is obsolete product.


This adn file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

The default software associated to open adn file:

Lotus 1-2-3 icon

IBM logoLotus 1-2-3  Microsoft Windows software

Company or developer:

IBM Lotus 1-2-3 is spreadsheet application very popular in 80s and 90s of 20th century. It was released for Microsoft Windows, MS-DOS, Mac OS and OS/2. In 2002 IBM stopped the developing of the IBM Lotus 1-2-3. In the latest versions is Lotus 1-2-3 fully compatible with Microsoft Excel.

Help how to open:

The adn files are used for internal purposes of Lotus 1-2-3.

How to convert:

Conversion to other formats is not possible.

List of software applications associated to the .adn 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 adn file, edit adn file, convert adn file, view adn file, play adn file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting adn files.

Software that import adn file - Lotus 1-2-3 add-in

Programs supporting the exension adn on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Lotus 1-2-3 for import adn file action.

Microsoft Windows:

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