COW File Type

- The quick facts

What are COW files and how to open them

Are you having problems opening a COW 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 a COW file?

A .COW file is a Copy On Write Disk Image file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open COW files

Important: Different programs may use files with the COW file extension for different purposes, so unless you are sure which format your COW file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 3 different COW openers which you will find listed below.

Last updated: June 3, 2021

Various apps that use files with this extension

These apps are known to open certain types of COW files. Remember, different programs may use COW files for different purposes, so you may need to try out a few of them to be able to open your specific file.

DNADynamoDNADynamoUser submitted
Circle Of Wealth SystemCircle Of Wealth SystemUser submitted
SnapGene ViewerSnapGene ViewerUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about COW file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.