Short answer
Open the Omarchy menu with Super + Space. Choose Install > Browser and pick Firefox. Omarchy installs it, sets up its policy directory and applies your theme.
Steps
- Open the Omarchy menu with Super + Space.
- Choose Install > Browser and pick Firefox. Omarchy installs it, sets up its policy directory and applies your theme.
- To make it the default, go to Setup > Defaults > Browser, or run omarchy default browser firefox.
Installing a browser doesn't make it the default; you choose that separately. [omarchy.org]
Source
From the official Omarchy manual, checked 2026-10-19. Firefox is not a package in the Omarchy repo, so it has no app page here; for repo apps use the apps list.