KDiff3 is a diff and merge program.
Publisher’s description
What is KDiff3?
KDiff3 by Joachim Eibl is open-source Windows software in the developer utilities category.
Installation and requirements
The publisher provides EXE (NSIS) installers for Any CPU Windows. The main installer is 11.5 MB. It needs Windows 10 or newer. A silent install is possible with the installer’s documented switches.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Small download (11.5 MB)
Cons
- No update for more than a year
In short: KDiff3 is an open-source developer utilitie tool for Any CPU PCs. Updates have slowed down. Administrators can deploy it unattended.
Is KDiff3 safe to download?
- The file is served by sourceforge.net, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
D630AB0FDCA3B4F1A85AB7E453F669FDC901CB81BB57F7E20DE64C02AC9A1EEB· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 0.9.98Latest | March 30, 2021 | 11.5 MB | Any CPU EXE (NSIS) |
Install from the command line
Silent install ›winget install --id JoachimEibl.KDiff3 -edownload /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- Joachim Eibl
- Category
- Developer utilities
- Licence
- GPL
- Price
- Free
- Requires
- Windows 11 / 10 (Windows 10+)
- Architecture
- Any CPU
- Installer
- EXE (NSIS)
- Version
- 0.9.98
- Released
- March 30, 2021
- Added to the catalogue
- March 30, 2021
- Versions listed
- 1
- Website
- kdiff3.sourceforge.net
- winget ID
- JoachimEibl.KDiff3
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to KDiff3
See all ›-
Open source1.2M ↓ -
Open source5.1M ↓ -
x64dbg2026.05.27An open-source user mode debugger for Windows. Optimized for reverse engineering and malware analysis.Open source95.8K ↓ -
Open source8.3K ↓ -
Open source18.8K ↓ -
Biome2.6.3Biome is a toolchain for web projects, aimed at providing functionalities to maintain them. It offers a formatter and linter, usable via CLI and LSP.Open source10.5K ↓ -
Open source15.7K ↓ -
Open source28.3K ↓
Frequently asked questions
Is KDiff3 free?
Yes. KDiff3 is open-source software under the GPL licence.
Is KDiff3 safe to download?
The download comes from sourceforge.net, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install KDiff3 with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can KDiff3 be installed silently?
Yes. The silent install page lists the exact command for each installer.
Which Windows versions does KDiff3 support?
The installer requires Windows 10 or newer and is available for Any CPU.
Does KDiff3 run on ARM (Windows on Arm)?
The installer is architecture-neutral.
What are alternatives to KDiff3?
WinMerge, jq, x64dbg, Difftastic and delta. The alternatives page compares them.
