Firefox Developer Edition
Universal version latest seen at v148.0 · Reported by 2 Macs in the community.
Firefox Developer Edition is Mozilla's browser built specifically for web developers and designers. It includes built-in developer tools for inspecting and debugging HTML, CSS, and JavaScript directly in the browser, along with advanced features like WebSocket debugging, responsive design mode, accessibility inspector, and performance profiling. It ships with experimental features and updates more frequently than the stable release, making it the preferred choice for developers who need the latest web platform capabilities and developer tooling. Like the standard Firefox browser, it is free, open-source, and available across Windows, macOS, and Linux.
Suggested Replacements
1 suggestionA native Apple Silicon (Universal Binary) build of Firefox Developer Edition has been confirmed running on real Macs in the Rosetta Check community. Anyone still on an older Intel-only build under Rosetta should update to the latest version from Mozilla to get the native build, which will use noticeably less CPU and battery. Download the latest version directly from Mozilla's website; the download page will automatically serve the Universal Binary on M-series Macs.
Native version · Reported by in the community.
Sighting data is community-sourced — version availability and pricing should be verified with the developer.
Suggested Replacements
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