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DiffMerge vs Beyond Compare: catalog facts
DiffMerge	Beyond Compare
Free Free to use under SourceGear's freeware license.	Paid Paid license with a free trial.
Windows, macOS, Linux	Windows, macOS, Linux
Two-way diff and three-way merge with editable panes Side-by-side folder comparison	Compares folders, text, images and tables Merges changes from two versions
Closed source freeware Infrequent updates	Paid after the trial Proprietary software
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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