How to open HOSTS files

Did your computer fail to open a HOSTS file? We explain what HOSTS files are and recommend software that we know can open or convert your HOSTS files.

What is a HOSTS file?

The HOSTS file extension indicates to your device which app can open the file. However, different programs may use the HOSTS file type for different types of data.

While we do not yet describe the HOSTS 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 HOSTS 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!

Generic HOSTS

These apps are known to open certain types of HOSTS files. Since many different programs may use HOSTS files for different purposes, you may need to try a few of the apps to open your specific HOSTS file.

HOSTS File ManagerHOSTS File ManagerUser 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.

We have not verified any programs that we know for certain can work with HOSTS-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with HOSTS-files. If you know one, please use the Suggest link below and tell us about it!