Iceweasel is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best Mac alternative is Mozilla Firefox, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Iceweasel and many of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Iceweasel are Google Chrome (Free), Brave (Free, Open Source), Vivaldi (Free) and Opera (Free).
Vivaldi is extremely customizable, presenting a wide range of settings and built-in features designed to put the user in control. Its Chromium-based engine makes it fast and compatible with most Chrome extensions, and Vivaldi removes the code that tracks users from it.
Pale Moon is an Open Source, Goanna-based web browser available for Microsoft Windows and Linux (with other operating systems in development), focusing on efficiency and customization. Make sure to get the most out of your browser!.
Rebuilt from the ground up using Chromium, the new Microsoft Edge brings you world-class compatibility and performance, the security and privacy you deserve, and new features designed to bring you the best of the web.
Firefox Developer Edition brings you latest features, fast performance, and the development tools you need to build for the open web. Its powerful development tools will extend your ability to work across multiple platforms from one place.
Firefox Nightly is the development (alpha) release channel of Mozilla Firefox . Firefox Nightly gets a new version every few hours. It offers access to bleeding edge features of the development branch of Firefox before they make a final release.