What is a .ADF File And How To Open It – The Sage Group

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Have you came across a file with the .adf extension, but it is a file you have never seen before? It is possible that you know what the file does, but you are unsure on how to open it. That’s why you are here! We have made this guide for you to learn more about the .adf file extension and how to open it.

What is a .ADF file?

The .ADF file extension is ACT! Data File. It was developed by The Sage Group. The file has the binary format, and it is a database related file.

What to know

There is currently 1 software that can open the .adf file on 1 platform.

How to open a .ADF file?

Below we have written a comprehensive guide on how to open the .ADF file on various operating systems.

How to open a .ADF file on Windows (7, 8, 10)

To open the .adf file on Windows, please follow these 4 easy steps.

1. In the first step you need to download the Swiftpage Act! software. This software will be used for opening the file. Other software that can be used in opening this file is: Swiftpage Act!.

Step 2

Step 2: Locating your .ADF file

2. The second step is locating the downloaded file. The file can be usually found in your /download/ folder if you don’t remember where you have downloaded it to.

Step 3

Step 3: Choose “Open with”

3. In the third step, after locating your file, right click on it and click “Open with”.

Step 4

Step 4: Choose the software and click ok

4. In the fourth step, after clicking “Open with”, you should see the Swiftpage Act! software that you have downloaded. Choose your software and click on “OK”. Congratulations! You have opened your file on Windows.

Still cannot open the .ADF file?

If you cannot open the .ADF file, it is entirely possible that you are trying to open the wrong file. The .ADF file extension is similar to other file extensions such as: .adf – ESRI, .adf – Software AG, .adf – Rockstar Games, .adf – Acorn Computers, .adf – PY Software. You might be trying to open the wrong file, please recheck if you are trying to open the right file extension again.


In this article you have learned how to open the .ADF file with the Swiftpage Act! program on Windows.