KDiff3
KDE
Download from the vendor
apps.kde.org
A tool for comparing and merging two or three text files or folders. It shows differences line by line and character by character, merges automatically what it can and leaves conflicts for you to resolve in a built-in editor. Useful when two people edited the same input file or script, for comparing versions of configuration files, and as part of working with Git. It integrates with the file explorer. It suits text files, not Word or PDF files.
Ratings & Reviews
| Licence type | Completely Free, Open Source |
|---|---|
| Licence terms | Open-source licence (GPL-2.0). Free for any purpose including commercial work, with no time limit, no registration and no licence key. |
| Platforms | Linux, macOS, Windows |
| Engineering field | Architecture, Civil Engineering, Electrical & Electronics, Mechanical Engineering |
| Tool type | General Productivity |
| Vendor site | apps.kde.org |
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Last verified: 2026-10-05
