Firefox Legacy 67 for Lion was last built in June 2019 - that's over a year during which security vulnerabilities would have been discovered and left uncorrected in such an old build of Firefox The only way I'd be confident to access the web safely on an outdated OS like Lion, would be if I was confident that the browser I was using had at. Firefox Lockwise. Take the passwords you’ve saved in Firefox with you everywhere. Download for iOS; Download for Android; Support; Firefox Monitor. See if your personal info has been leaked online, and sign up for future breach alerts. Firefox OS (project name: Boot to Gecko, also known as B2G) is a discontinued open-source operating system – made for smartphones, tablet computers and smart TVs – designed by Mozilla and external contributors. It is based on the rendering engine of the Firefox web browser, Gecko, and on the Linux kernel.It was first commercially released in 2013.

Firefox version 78 is the last supported Firefox version for Mac users of OS X 10.9 Mavericks, OS X 10.10 Yosemite and OS X 10.11 El Capitan. These users will be moved to the Firefox Extended Support Release (ESR) channel by an application update. This will provide security updates until the next ESR update in July 2021, after which the affected users will no longer receive security updates.

While Apple does not have a public policy governing security updates for older OS X releases, their ongoing practice has been to support the most recent three releases. The last security update applicable to OS X 10.11 was made available in July 2018. Unsupported operating systems do not receive security updates, have known exploits and can be dangerous to use, which makes it difficult to maintain Firefox on those versions.
Up until July 2021, we will be updating affected users with critical security updates through the Firefox ESR channel to help retain the best possible security. After this, no security updates will be provided.
If you want to keep your Firefox version up to date, you will need to upgrade your operating system to macOS 10.12 or higher. Older versions that are not supported by Apple are unreliable and unsafe to use, which also makes it difficult to maintain Firefox on those versions.
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Firefox Latest Version
Firefox 10.0.1
- Released:
- Feb 11, 2012
- Size:
- 31.38 MB
- Downloads:
- 3,050
- Rating:
Firefox Popular Version
Firefox 3.0.10
- Released:
- Feb 24, 2011
- Size:
- 7.18 MB
- Downloads:
- 6,334
- Rating:
Select Version of Firefox to Download for FREE!
Software Version | Release Date | Size |
---|---|---|
Firefox 0.8 | Feb 24, 2011 | 6.20 MB |
Firefox 0.9 | Feb 24, 2011 | 4.73 MB |
Firefox 0.9.1 | Feb 24, 2011 | 8.52 MB |
Firefox 0.9.3 | Feb 24, 2011 | 8.52 MB |
Firefox 1.0 | Feb 24, 2011 | 4.69 MB |
Firefox 1.0 Pre Release | Feb 24, 2011 | 8.45 MB |
Firefox 1.0.1 | Feb 24, 2011 | 8.71 MB |
Firefox 1.0.2 | Feb 24, 2011 | 8.73 MB |
Firefox 1.0.3 | Feb 24, 2011 | 8.73 MB |
Firefox 1.0.4 | Feb 24, 2011 | 8.73 MB |
Firefox 1.0.5 | Feb 24, 2011 | 8.73 MB |
Firefox 1.0.6 | Feb 24, 2011 | 4.65 MB |
Firefox 1.0.7 | Feb 24, 2011 | 4.65 MB |
Firefox 1.5 Beta 1 | Feb 24, 2011 | 9.38 MB |
Firefox 1.5 Beta 2 | Feb 24, 2011 | 9.44 MB |
Firefox 1.5 | Feb 24, 2011 | 9.44 MB |
Firefox 1.5.0.1 | Feb 24, 2011 | 9.44 MB |
Firefox 1.5.0.3 | Feb 24, 2011 | 4.88 MB |
Firefox 1.5.0.4 | Feb 24, 2011 | 4.88 MB |
Firefox 1.5.0.5 | Feb 24, 2011 | 4.88 MB |
Firefox 1.5.0.7 | Feb 24, 2011 | 4.89 MB |
Firefox 2.0 Beta 1 | Feb 24, 2011 | 5.45 MB |
Firefox 2.0 Beta 2 | Feb 24, 2011 | 5.64 MB |
Firefox 2.0 Release Canidate 3 | Feb 24, 2011 | 17.56 MB |
Firefox 2.0 Release Canidate 2 | Feb 24, 2011 | 5.63 MB |
Firefox 2.0 Release Canidate 1 | Feb 24, 2011 | 5.62 MB |
Firefox 2.0 | Feb 24, 2011 | 5.63 MB |
Firefox 2.0.0.1 | Feb 24, 2011 | 5.69 MB |
Firefox 2.0.0.2 | Feb 24, 2011 | 17.61 MB |
Firefox 2.0.0.3 | Feb 24, 2011 | 5.73 MB |
Firefox 2.0.0.4 | Feb 24, 2011 | 5.73 MB |
Firefox 2.0.0.5 | Feb 24, 2011 | 5.74 MB |
Firefox 2.0.0.6 | Feb 24, 2011 | 5.74 MB |
Firefox 2.0.0.12 | Feb 24, 2011 | 5.75 MB |
Firefox 2.0.0.13 | Feb 24, 2011 | 5.76 MB |
Firefox 2.0.0.14 | Feb 24, 2011 | 5.76 MB |
Firefox 2.0.0.15 | Feb 24, 2011 | 5.76 MB |
Firefox 2.0.0.16 | Feb 24, 2011 | 5.77 MB |
Firefox 2.0.0.17 | Feb 24, 2011 | 17.14 MB |
Firefox 2.0.0.18 | Feb 24, 2011 | 17.14 MB |
Firefox 2.0.0.19 | Feb 24, 2011 | 17.14 MB |
Firefox 2.0.0.20 | Feb 24, 2011 | 17.14 MB |
Firefox 3.0 | Feb 24, 2011 | 7.15 MB |
Firefox 3.0.1 | Feb 24, 2011 | 7.15 MB |
Firefox 3.0.2 | Feb 24, 2011 | 7.16 MB |
Firefox 3.0.4 | Feb 24, 2011 | 7.16 MB |
Firefox 3.0.5 | Feb 24, 2011 | 7.17 MB |
Firefox 3.0.6 | Feb 24, 2011 | 7.17 MB |
Firefox 3.0.7 | Feb 24, 2011 | 7.17 MB |
Firefox 3.0.8 | Feb 24, 2011 | 7.17 MB |
Firefox 3.0.9 | Feb 24, 2011 | 7.18 MB |
Firefox 3.0.10 | Feb 24, 2011 | 7.18 MB |
Firefox 3.5.2 | Aug 3, 2009 | 17.55 MB |
Firefox 3.6.12 | Oct 27, 2010 | 18.57 MB |
Firefox 3.6.24 | Add info | 18.78 MB |
Firefox 3.6.25 | Dec 20, 2011 | 18.58 MB |
Firefox 6.0.1 | Aug 31, 2011 | 28.07 MB |
Firefox 6.0.2 | Sep 6, 2011 | 28.13 MB |
Firefox 7.0.1 | Sep 29, 2011 | 28.19 MB |
Firefox 8.0 | Nov 8, 2011 | 29.47 MB |
Firefox 8.0.1 | Add info | 29.47 MB |
Firefox 10.0.1 | Feb 11, 2012 | 31.38 MB |
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Firefox For Mac
Firefox is a free open source web browser that is a continuation of the Mozilla Application Suite and uses the Gecko rendering engine. Firefox has numerous popular features including tabbed browsing, spell checking, and the ability to add numerous community developed plugins.
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