Mozilla Firefox Developer Edition for Mac

Firefox Developer Edition is a browser version released by Mozilla for web developers, integrating more advanced developer tools and the latest web features on top of Firefox. It suits developers who need to debug page layouts, inspect styles and scripts, and troubleshoot front-end issues, and its support for new technologies such as CSS Grid makes layout debugging more intuitive. Compared with the regular version, it leans more toward development scenarios and follows an update cadence closer to cutting-edge features, while remaining fully capable for everyday browsing. If you frequently work with web code and want a smoother debugging process, you can use it as either your primary or secondary browser.