ADT File - opening and understanding

Did your computer fail to open an ADT file? We explain what they are used for and recommend software that we know can open or otherwise handle your .ADT files.

What is an ADT file?

An .ADT file is an Act! Document Template file. Act!, previously Sage Act, is a marketing and CRM software solution. It stores document templates for its built-in Word Processor with the .adt file extension.

How to open ADT files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension ADT for different purposes. We have identified 1 ADT opener for Windows that is compatible with this specific type of ADT file.

Programs that open these files

ACT! by SageACT! by SageVerified
We have not yet verified any programs for Mac that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!
We have not yet verified any web services that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Other file formats using extension .ADT

While Act! Document Template is a popular type of ADT-file, we know of 3 different uses of the .ADT extension.

The ADT file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So an ADT opener may not be able to open all kinds of ADT files. In this case, look through all formats to make sure you find the best suited ADT viewer.

Advantage Data Server table

These ADT files are database files that contain a single table. This database type is known as a Sybase Advantage Database. You can not open these ADT files directly; you have to connect to them using an ADS database engine. Using the Advantage Data Architect tool, you can export the table data and import it into databases like SQL servers.

While we have not verified the apps ourselves yet, our users have suggested 10 different ADT openers which you will find listed below.

Casio Pocket Viewer Add-in Data file

Through our analysis of ADT files, we know that one use of the format is Casio Pocket Viewer Add-in Data file. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

While we have not verified the apps ourselves yet, our users have suggested 10 different ADT openers which you will find listed below.

Various viewers for this file format

These apps are known to open certain types of ADT files. Remember, different programs may use ADT files for different purposes, so you may need to try out a few of them to be able to open your specific file.

VideoLAN VLC media playerVideoLAN VLC media playerUser submitted
KMPlayerKMPlayerUser submitted
Zoom PlayerZoom PlayerUser submitted
TS PlayerTS PlayerUser submitted
FLV and Media PlayerFLV and Media PlayerUser submitted
Advantage Data ArchitectAdvantage Data ArchitectUser submitted
Microsoft OfficeMicrosoft OfficeUser submitted
Ace PlayerAce PlayerUser submitted
ARCDRAWARCDRAWUser submitted
Sigma media playerSigma media playerUser submitted
We have not verified any software that we know for certain will work with ADT-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with ADT-files. If you know one, please use the 'Suggest a program' link below and tell us about it!