Best KDiff3 Alternatives in 2026
Updated
20 apps from file comparison software ranked against KDiff3 on the same published basis.
- 1KDiff3 vs Buddi
- 2KDiff3 vs Diffchecker
- 3KDiff3 vs Diffract
- 4KDiff3 vs Meld
- 5KDiff3 vs Code Compare
- 6KDiff3 vs WinMerge
- 7KDiff3 vs cwdiff
- 8KDiff3 vs NextDiff
- 9KDiff3 vs SmartSynchronize
- 10KDiff3 vs TkDiff
- 11KDiff3 vs Diff-Text
- 12KDiff3 vs P4Merge
- 13KDiff3 vs Beyond Compare
- 14KDiff3 vs Beyond Compare
- 16KDiff3 vs Diffinity
- 17KDiff3 vs Kompare
- 18KDiff3 vs Mergely
- 19KDiff3 vs AmSo Compare
- 20KDiff3 vs FolderMatch
- 21KDiff3 vs Kaleidoscope
KDiff3 alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Buddi | 6.6 | Free plan | Free | Linux, Mac, Windows |
| 2 | Diffchecker | 6.6 | Free plan | $15/mo | Linux, Mac, Web, Windows |
| 3 | Diffract | 6.5 | Free plan | Free | Linux, Mac, Windows |
| 4 | Meld | 6.5 | Free plan | Free | Linux, Windows |
| 5 | Code Compare | 6.4 | Free plan | Free | Browser, Windows |
| 6 | WinMerge | 6.4 | Free plan | Free | Windows |
| 7 | cwdiff | 6.3 | Free plan | Free | Linux |
| 8 | NextDiff | 6.3 | Free plan | Free | Windows |
| 9 | SmartSynchronize | 5.6 | No | — | Linux, Mac, Windows |
| 10 | TkDiff | 5.4 | No | — | Linux, Mac, Windows |
| 11 | Diff-Text | 5.3 | No | — | Web, Windows |
| 12 | P4Merge | 5.3 | No | — | Linux, Mac, Windows |
| 13 | Beyond Compare | 5.2 | No | — | Linux, Mac, Windows |
| 14 | Beyond Compare | 5.2 | No | — | Linux, Mac, Windows |
| 16 | Diffinity | 5.1 | No | — | Windows |
| 17 | Kompare | 5.1 | No | — | Linux |
| 18 | Mergely | 5.1 | No | — | Web |
| 19 | AmSo Compare | 5.0 | No | $1.08/mo | Mac |
| 20 | FolderMatch | 5.0 | No | — | Windows |
| 21 | Kaleidoscope | 5.0 | No | $0.67/mo | Mac |
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Questions about KDiff3 alternatives
What is the best alternative to KDiff3?
Buddi, number 1 in file comparison software with a score of 6.6 out of 10. The others here: Diffchecker, Diffract, Meld and 16 more.
What is the best free alternative to KDiff3?
Buddi is the best-ranked alternative with a free plan. 8 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.