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WinMerge vs Meld: catalog facts
WinMerge	Meld
Free Free and open source under the GPL 2.0.	Free Free and open source under the GPL, part of the GNOME project.
Windows	Windows, Linux
Two-way and three-way file comparison with inline difference highlighting Folder comparison with filter expressions on name, path, size and time	Two-way and three-way comparison of files with live editing in place Three-way merge assistance with conflict handling and the base version shown
Windows only The interface has not changed much in fifteen years	No official macOS build; it is Windows and Linux GTK on Windows means it looks and behaves like a port
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 21, 2026

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