Download FirefoxDeveloperEdition 61.0 for Mac from our website for free. This free software for Mac OS X was originally created by Mozilla. The software is categorized as Developer Tools.
From the developer:
Firefox Developer Edition is a version of Firefox that's tailored for web developers. Firefox Developer Edition replaces the Aurora channel in the Firefox Release Process. Like with Aurora edition, features will land in the Developer Edition every six weeks, after they have stabilized in Nightly builds.
You may want to check out more Mac applications, such as WebSite Auditor, Rank Tracker or VirtualHostX, which might be similar to FirefoxDeveloperEdition.