Comprehensive Overview of Firefox Developer Edition

Firefox Developer Edition is a specialized version of the popular web browser designed for developers and web enthusiasts. This free browser offers early access to features that will be available in the standard version, updated approximately every six weeks. It includes unique tools for web development, such as a development kit for creating applications for Firefox OS, and options to inspect and edit source code directly within the browser. The new functionalities are conveniently organized in a drop-down menu for easy access.

In addition to its development tools, Firefox Developer Edition features real-time HTML and CSS editing, debugging options, and performance analysis tools that monitor network requests and interactions. A darker theme distinguishes it from the standard version, but both browsers maintain similar core functionalities. This version is particularly beneficial for developers seeking to stay ahead of the curve and test their projects across different devices and browsers, including Chrome and Safari.

App specs

  • License

    Free

  • Version

    144.0

  • Latest update

  • Platform

    Mac

  • OS

    macOS 10.15

  • Language

    English

    Available languages

    • English
    • Spanish
  • Downloads

    76

    Last month's downloads

    • 23
  • Size

    159.34 MB

  • Developer

Program available in other languages



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Laws concerning the use of this software vary from country to country. We do not encourage or condone the use of this program if it is in violation of these laws.
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Your review for Firefox Developer Edition
Softonic
100/100

Score result: Clean

This file passed a comprehensive security scan using VirusTotal technology. It is safe to download.

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Scan Info

Last scan
Wednesday, September 17, 2025
Scan provider
VirusTotal · Full report

File Integrity

File
Firefox_Developer_Edition_V144.0.dmg
SHA256
dd151ac277113b3956e5f0d44ccbc365dcfb47bc0fb51b4d0b12c8cad83a14e4
SHA1
bb5b0b4401e3019a005a0759b51bb87f5d6d48e0

Softonic security commitment

Firefox Developer Edition has been thoroughly scanned by our advanced security systems and verified by industry-leading partners. This file comes from the official developer and has passed all our security checks, showing no signs of viruses, malware, or spyware.