Get the latest features, fast performance, and the development tools!

Firefox Developer Edition for Mac

Firefox Developer Edition 88.0b5

  -  135 MB  -  Open Source

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Firefox Developer Edition 88.0b5.


For those interested in downloading the most recent release of Firefox Developer Edition for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

What's new in this version:

New:
- Firefox will automatically look for client certificates in platform-specific storage on Windows and macOS by default when necessary
- Smooth pinch-zooming using a touchpad is now supported on Linux under Wayland

Fixed:
- Fixed an issue with Firefox for Android where video playing in fullscreen or picture-in-picture mode would not display correctly on sites using a desktop viewport.

Changed:
- The Take a Screenshot feature was moved from the Page Actions menu in the url bar into a regular icon you can add to your toolbar from the customize menu
- FTP has been disabled in Firefox Release 88. The implementation is planned to be removed in Firefox 90