
Starting with Thunderbird version 52, Thunderbird requires Mac OS X 10.9 (Mavericks) or higher.
For optimal functionality, we recommend the following libraries or packages:.
X.Org 1.0 or higher (1.7 or higher is recommended). Firefox will not run at all without the following libraries or packages:. Please note that Linux distributors may provide packagesfor your distribution which have different requirements. Macintosh computer with an Intel x86 processor. Pentium 4 or newer processor that supports SSE2. Recommended Hardware Mozilla Firefox For Mac 10.5.8 Please note that while the 32-bit and 64-bit versions of Windows Vistaand Windows 7 can be used to run Firefox 8, only 32-bit builds of Firefox 8 aresupported at this time. Content available under a Creative Commons license. Portions of this content are ©1998–2020 by individual contributors. Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation. Mozilla Will Retire Firefox Support for OS X 10.6, 10.7, and 10.8 in August 2016, VentureBeat, 2016.04.29 Google Chrome Leaving OS X 10.6 through 10.8 Behind in April, Low End Mac, 2016.03.05 Apple Signals End to OS X Snow Leopard Support, Computerworld, 2013.12.07. Get Firefox for Windows, macOS, Linux, Android and iOS today! Firefox is created by a global non-profit dedicated to putting individuals in control online. Download Mozilla Firefox, a free Web browser.