Firefox download legacy version

Firefox Legacy

Firefox Legacy is an unofficial modified version of Mozilla Firefox that works on older Mac OS X versions.

Download it now and breathe new life into your old Mac.

Download
Current version for OS X Mountain Lion: p2 ()
IMPORTANT NOTE ABOUT UPDATING TO v A new Firefox profile will be created when you update from earlier versions to version To restore your previous data, type "about:profiles" in the address bar, then find your previous profile (if you can't tell which, try each one) and set it as default. Then, restart Firefox Legacy. I apologize for the inconvenience; the cause of this issue is not known.

Download the Firefox 68 ESR version which supports OS X Lion:p2 ()

Source Code

A version of Firefox 52 is available for Mac OS X Snow Leopard; it will not be updated to a recent version due to technical limitations of the OS.

Download
Current version for Mac OS X Snow Leopard: p1 ()
Note: the program is called "Nightly" due to licensing restrictions prohibiting the use of the official Firefox branding.

Source Code

Known Issues

• Small problems with displaying right-to-left languages on OS X
• The crash reporter does not work on OS X or (it itself crashes)
• A useless empty share menu is visible on OS X
• The sandbox (a security feature intended to protect you from malicious websites) does not work, and has been disabled
• On OS X , the browser crashes when the camera or microphone are used
• WebGL does not work on computers with GPUs not supporting OpenGL (many Macs)
• Some buttons are invisible on Google Calendar, WordPress, and other sites that use font-based icons
• DRM (Encrypted Media Extensions/Widevine) does not work
• Version only: The progress bar is not visible on the icons of downloading files in the Finder