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DeltaWalker vs KDiff3: catalog facts
DeltaWalker	KDiff3
Paid Commercial software with licences and upgrades sold through its store; a trial is offered.	Free Free and open source under the GPL v2 or later.
macOS	Windows, macOS, Linux
Three-way comparison and synchronization for files and folders Compares Office, PDF, archives, XML and images	Compares and merges files and whole directories Three-way merge for resolving version control conflicts
Paid licence required Version 3 is still a release candidate	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.