Chief Architect catalogue file
File type: Various data file
A CATOM file is a catalogue data file used by Chief Architect architectural design software.
It stores catalogue information used by the application and is not a Chief Architect project file.
File type category:
Various data file
Date updated: September 27, 2026
Chief Architect, developed by Chief Architect, Inc., is architectural design software for creating building plans and three-dimensional designs. A CATOM file belongs to the software's catalogue system and contains catalogue data used by Chief Architect.
The file is associated with the application's library or catalogue resources rather than with a single design project. It is a proprietary data file intended for use by Chief Architect.
Chief Architect for Microsoft Windows is the relevant software for this format. Because CATOM is tied to the application's catalogue system, it is not intended as a general-purpose data interchange format.
Open a CATOM file with Chief Architect on Microsoft Windows. If it belongs to an installed catalogue, access it through Chief Architect's catalogue or library tools rather than opening it in a text editor or another general-purpose application.
Use Chief Architect's catalogue or library tools to manage CATOM data and use any export options provided by the software for the required target.
If the aim is to transfer a design rather than catalogue data, open the associated project in Chief Architect and export the project or its contents using the application's own export features.
Software applications that can open catom files:
Microsoft Windows
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