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Araxis Merge vs KDiff3: catalog facts
Araxis Merge	KDiff3
Paid Commercial licence with a 30-day free trial.	Free Free and open source under the GPL v2 or later.
Windows, macOS	Windows, macOS, Linux
Two-way and three-way file comparison and merging Folder comparison and synchronisation	Compares and merges files and whole directories Three-way merge for resolving version control conflicts
Paid after the 30-day trial No Linux version	Interface looks dated next to newer diff tools Focused on text; no rich comparison of binary formats
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0-or-later
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.