How to open AT3 files
Did your computer fail to open an AT3 file? We explain what AT3 files are and recommend software that we know can open or convert your AT3 files.
What is an AT3 file?
The AT3 file extension indicates to your device which app can open the file. However, different programs may use the AT3 file type for different types of data.
While we do not yet describe the AT3 file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.
We are continually working on adding more file type descriptions to the site, so if you have information about AT3 files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!
These apps are known to open certain types of AT3 files. Since many different programs may use AT3 files for different purposes, you may need to try a few of the apps to open your specific AT3 file.