Mac OS X 10.9 (Mavericks) (Intel) (81). Mac OS X 10.1 (Firefox 1.0.8), OS X 10.2 and OS X 10.3 (Firefox 2.0.0.20), Mac OS X 10.4 (Firefox 3.X), Mac OS X 10.5 or above (Current Version). Latest Firefox features include tabbed browsing, spell checking, incremental find, live bookmarking, a download manager, private browsing.
Firefox For Mac 10.9.5
On June 30th, macOS 10.9, 10.10 and 10.11 users will automatically be moved to the Firefox Extended Support Release (ESR).
- Download OS X Mavericks 10.9. Feb 25, 2014 This update: Adds the ability to make and receive FaceTime audio calls; Adds call waiting support for FaceTime audio and video calls. Adds the ability to. Jan 24, 2018 How to upgrade from Mac OS x 10.9.5 to 10.10 (required for a new invoicing programme).
- Mac users interested in Firefox for os x 10.5.8 generally download: Firefox 80.0 Free Firefox is one of the most popular web browsers on the market, providing numerous helpful features and quick speed to millions of users worldwide.
While Apple doesn’t have an official policy governing security updates for older macOS releases, their ongoing practice has been to support the most recent three releases (i.e. version N, N-1, and N-2). The last security update applicable to macOS 10.11 was made available nearly 2 years ago in July 2018 (https://support.apple.com/en-us/HT201222). Unsupported operating systems receive no security updates, have known exploits, and can be dangerous to use, which makes it difficult and less than optimal to maintain Firefox for those versions.
Firefox For Mac Os X 10.9.5
Users do not need to take additional action to receive those updates. On June 30th, these macOS users will automatically be moved to the ESR channel through application update.
In the meantime, we strongly encourage our users to upgrade to mac OS X 10.12 or higher to benefit from the security and privacy updates.
For more information please visit the Firefox support page.