While it is no longer receiving security patches, it still supports many modern web standards that the original Safari versions for 10.9–10.11 can no longer handle. System Requirements Firefox ESR 78.0esr System Requirements — Firefox.com
Firefox 78 is a significant milestone for macOS users, particularly those using older hardware that Apple no longer supports with modern updates. It serves as the final gateway to the modern web for several legacy operating systems. Official Firefox 78 Download (DMG) firefox 78 download dmg
To ensure a secure installation, you should always download the Firefox DMG directly from Mozilla's FTP Archive . While it is no longer receiving security patches,
Operating Systems * macOS 10.9. * macOS 10.10. * macOS 10.11. * macOS 10.12. * macOS 10.13. * macOS 10.14. * macOS 10.15. Directory Listing: /pub/firefox/releases/78.0/mac/en-GB/ Official Firefox 78 Download (DMG) To ensure a
For many users, Firefox 78 isn't just an "old version"—it's the only modern browser choice.