External diff tool guide
DiffMerge
SourceGear desktop application for visual file diff, three-way merge, and folder comparison on Windows, macOS, and Linux.
Category
Desktop GUI
License
Freeware
Platforms
Windows, macOS, Linux
Best for
Users who want a traditional free desktop diff/merge tool and do not need the newest commercial suite features.
Strengths
- Simple visual file and folder comparison
- Three-way merge
- Cross-platform desktop app
Limitations
- Older product feel
- Less active ecosystem than newer tools
- Limited modern cloud or media workflows
Key features
File diff with intra-line highlighting
Three-way merge
Folder diff
Explorer integration on Windows
Install notes
Download installers from SourceGear DiffMerge.