mozregression-gui ☆

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Description:
Interactive regression range finder for Firefox and other Mozilla products

Type: Cask | Latest Version: 7.1.0@0 | Tracked Since: Dec 17, 2025

Links: Homepage | @Mozilla | formulae.brew.sh

Category: Developer tools

Tags: firefox mozilla regression testing bisection developer-tools

Install: brew install --cask mozregression-gui

About:
mozregression-gui is an interactive tool that automates the process of finding regression ranges in Firefox builds. It allows developers to quickly pinpoint which changes introduced bugs by bisecting nightly and inbound builds. This significantly streamlines the debugging workflow for Mozilla developers and testers.

Key Features:

Interactive GUI for bisection
Supports Firefox Nightly and Inbound builds
Automated download and testing of builds
Detailed reporting of regression window

Use Cases:

Identifying the exact changeset that caused a specific browser bug
Verifying if a regression exists in a specific build range
Automating manual testing workflows for Firefox releases

Alternatives:

git bisect – Standard git tool for source code bisection, requires manual build/test steps unlike mozregression's automation.
MozTrap – Broader test case management system, whereas mozregression is specialized specifically for regression range finding.

Version History

Detected	Version	Rev	Change	Commit
Feb 11, 2026 10:32am	7.1.0	0	VERSION_BUMP	a4b2e08d
Dec 17, 2025 10:11pm	7.0.0	0	VERSION_BUMP	c6f9feba