What are ATOPEN files and how to open them
Are you having problems opening an ATOPEN file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is an ATOPEN file?
The ATOPEN file extension indicates to your device which app can open the file. However, different programs may use the ATOPEN file type for different types of data.
While we do not yet describe the ATOPEN 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 ATOPEN 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!
How to open ATOPEN files
Important: Different programs may use files with the ATOPEN file extension for different purposes, so unless you are sure which format your ATOPEN file is, you may need to try a few different programs.
While we have not verified the app ourselves yet, our users have suggested a single ATOPEN opener which you will find listed below.
Various apps that use files with this extension
These apps are known to open certain types of ATOPEN files. Remember, different programs may use ATOPEN files for different purposes, so you may need to try out a few of them to be able to open your specific file.
Help us help others
File.org helps thousands of users every day, and we would love to hear from you if you have additional information about ATOPEN file formats, example files, or compatible programs. Please use the links below or email us at email@example.com to discuss further.