kdiff3 ☆

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Description:
Utility for comparing and merging files and directories

Type: Cask | Latest Version: 1.12.3@0 | Tracked Since: Dec 28, 2025

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

Category: Developer tools

Tags: diff merge comparison file-utility developer-tool

Install: brew install --cask kdiff3

About:
KDiff3 is a file and directory comparison and merging tool that displays differences between two or three inputs with a clear, side-by-side interface. It provides a built-in editor for resolving conflicts and can automatically merge changes where possible. The tool is particularly useful for developers and system administrators who need to track changes across different versions of files or directories.

Key Features:

Three-way file comparison and merging
Directory comparison with recursive file analysis
Built-in diff editor with syntax highlighting
Automatic merge and conflict resolution assistance
Cross-platform support (Windows, macOS, Linux)

Use Cases:

Resolving Git merge conflicts during collaborative development
Comparing configuration files to identify changes between environments

Alternatives:

Meld – Meld offers a similar three-way merge UI but with a more modern GTK interface and stronger focus on directory comparison.
Beyond Compare – Beyond Compare is a commercial tool with more advanced features and automation, but requires a paid license.
DiffMerge – DiffMerge provides a free alternative with a clean interface, but lacks some of KDiff3's advanced merge capabilities.

Version History

Detected	Version	Rev	Change	Commit
Sep 15, 2025 12:33pm	1.12.3	0	VERSION_BUMP	12d7d977
Jul 3, 2024 1:36pm	1.11.2	0	VERSION_BUMP	a3b3b139