Open ADR file

ADR files: what are they and how do I open them?

adr file icon Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
We've got the information and best software solutions for opening these files effortlessly.

.adr file type #1: Opera bookmarks file

Files with adr extension can be found as saved bookmarks for Opera web browser.

Further details:

File extension adr is is mainly related to popular Opera web browser and used for one of its default file types.

These adr files contain list of bookmarks or contacts used by the Opera. They are generated automatically when user adds more pages as bookmarks.

Open file with:

Opera browser icon

Opera browser

A popular iInternet web browser and communiation suite

Opera browser for Mac icon

Opera browser for Mac

A free web browser and Internet suite

Opera browser for Linux icon

Opera browser for Linux

Linux version of popular web browser

.adr file type #2: Address book

An adr file extension is related to the Smart Address and used for its address book files.

Further details:

The adr file extension is associated with some applications contact management applications, such as Smart Address for Microsoft Windows developed by X2Net.

The adr file stores addresses of contacts.

Open file with:

Smart Address

An older contact management software

.adr file type #3: Adress PLUS SQL database

An adr file extension is related to the Adress PLUS SQL, a database management system. An adr file stores database.

Further details:

The adr file extension is used by Adress PLUS SQL, a leading professional database management system for Microsoft SQL Server from Version 7.

The adr file stores database in SQL database file format.

Open file with:


A Customer Relationship Management software

.adr file type #4: After Dark random screen saver module

An adr file extension is related to the After Dark for Mac. An adr file contains screen saver module.

Further details:

The adr file extension is associated with an After Dark screen saver application for Apple MAC OS Classic.

The adr file stores random screen saver module. Application is not developed yet. Old file extension.

We are sorry, there is currently no specific software link to open this kind of file.

.adr file type #5: z-Tree address data

An adr file extension is associated with the z-Tree, a program for developing economic experiments.

Further details:

The adr file extension is related to the z-Tree, a software package for developing and carrying out economic experiments, available for Microsoft Windows operating system.

The adr file stores adress data for z-Tree.

Open file with:


An experimental economics software

What is the meaning of a file extension?

File extensions are characters that appear after the dot in a computer file's name. For example, the file "unknown-file.adr" has the file extension "adr". This is used to identify which program should open the file or what file type it is.
File extensions help you organize and manage files. They provide a quick and easy way to identify and associate the file type with the appropriate software.

We can help you open your file

In our database, we have collected a huge number of different file extensions, detailed descriptions, and programs that can be used to open or otherwise work with the file extensions listed in our database.
This database is an invaluable resource for users who want to understand better file extensions and what they can do with them. It also allows users to know different file types with the same purpose.

Only verified software links are provided

We have verified every software listed in our database. The software listed in our database includes links to the developer's or software's website. These links should allow you to download the right program for each file type. Using verified software from reputable sources helps minimize the risk of malware and viruses infecting your computer.