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diffoscope vs DiffMerge: catalog facts
diffoscope	DiffMerge
Free Free software licensed under GPL-3.0-or-later.	Free Free to use under SourceGear's freeware license.
Web, Command line	Windows, macOS, Linux
Recursively unpacks many archive types for comparison Supports a broad range of binary and document formats	Two-way diff and three-way merge with editable panes Side-by-side folder comparison
Meaningful results for some formats may require additional tools or Python modules	Closed source freeware Infrequent updates
Downloadable app, Web application	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License: Freeware
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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