kdiff3
KDiff3 compares and merges files and folders, with support listed for macOS and Windows.
About kdiff3
KDiff3 is a file and folder diff and merge tool that compares and merges two or three text input files or folders. It shows differences line by line and character by character, provides an automatic merge facility with an editor for solving merge conflicts, and supports Unicode, UTF-8 and other file encodings. It is listed for Linux, macOS and Windows, with stable releases and separate nightly builds intended for testing.
Key features
- Compare and merge two or three text files or folders
- Show differences line by line and character by character
- Provide automatic merge facility for text inputs
- Include editor for solving merge conflicts
- Highlight or hide changes in whitespace or comments
- Support Unicode, UTF-8 and other file encodings
Best for: People who need to compare text files or folders and resolve merge conflicts on Linux, macOS, or Windows.
Good for
- Handles two- and three-way comparison of files and folders
- Listed for Linux, macOS, and Windows with Flathub availability
- Supports Unicode, UTF-8 and other file encodings
Watch out for
- Nightly installers are intended for testing purpose
- Linux install button only works with Discover and other AppStream stores
kdiff3 at a glance
- Website
- apps.kde.org/en-gb/kdiff3
- Category
- Software & Utilities › Linux Apps
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux, macOS, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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kdiff3 FAQ
How can KDiff3 be installed on Linux?
Use the Discover or AppStream store button, your distribution's package manager, or Flathub.
What are KDiff3 nightly installers for?
They are generated from the latest development branch and are intended for testing.
Which platforms besides Linux are listed?
macOS and Windows are listed, with separate Windows, macOS ARM, and macOS Intel downloads.
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