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DeltaWalker vs VisualDiffer: catalog facts
DeltaWalker	VisualDiffer
Paid Commercial software with licences and upgrades sold through its store; a trial is offered.	Free Free and open source.
macOS	macOS
Three-way comparison and synchronization for files and folders Compares Office, PDF, archives, XML and images	Side-by-side folder and file comparison Include and exclude filter rules
Paid licence required Version 3 is still a release candidate	macOS 13 or later only
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
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.