How to open CATOM files
Did your computer fail to open a CATOM file? We explain what CATOM files are and recommend software that we know can open or convert your CATOM files.
What is a CATOM file?
The CATOM file extension indicates to your device which app can open the file. However, different programs may use the CATOM file type for different types of data.
While we do not yet describe the CATOM 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 CATOM 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!
Update info Upload example file
Generic CATOM
These apps are known to open certain types of CATOM files. Since many different programs may use CATOM files for different purposes, you may need to try a few of the apps to open your specific CATOM file.
 | Chief Architect Premier | User submitted |
 | Chief Architect Premier Trial | User submitted |
 | Home Designer Architectural | User submitted |
 | Home Designer Pro | User submitted |
 | Home Designer Pro Trial | User submitted |
 | Chief Architect Interiors Trial | User submitted |
| Home Designer Essentials | User submitted |
 | Home Designer Suite | User submitted |
| Home Designer Interiors | User submitted |
| Chief Architect Viewer | User submitted |
| Chief Architect Lite | User submitted |
| Home Designer Landscape and Deck | User submitted |
| Chief Architect Interiors | User submitted |
Try a universal file viewer
Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.