WinMerge is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best free Mac alternative is KDiff3, which is also Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to WinMerge and 14 are free and available for Mac so hopefully you can find a suitable replacement. Other interesting free Mac alternatives to WinMerge are P4Merge, Meld for OSX, SemanticDiff and DiffMerge.
solid cross platform utility
does not diff files (checksum)
Most users think KDiff3 is a great WinMerge alternative.
P4Merge uses color coding to allow users to visualize the differences between file or images. It allows three-way merging among files, and shows side-by-side file/image comparison.
Very good tool IMHO: I have been using it for years, both as a visual diff and it integrates well as a 3 way merge tool for version control systems not just perforce, e.g. git , svn, bzr. Which is its primary purpose. AFAIK its QT based, only ugly if you think QT is. Default UI uses RedHat default laf, and Crystal icons from Everaldo
Can not compare directories. Ugly as hell.
Meld is a visual diff and merge tool targeted at developers. Meld helps you compare files, directories, and version controlled projects. It provides two- and three-way comparison of both files and directories, and has support for many...
SemanticDiff is a programming language aware diff for Visual Studio Code and GitHub. It helps software developers understand code changes faster by hiding irrelevant changes, detecting moved code, and highlighting refactorings.
SemanticDiff is the most popular Web-based alternative to WinMerge.
DiffMerge is a graphical file comparison program for Windows, Mac OS X and Unix, published by SourceGear.
Difftastic is a diff tool that compares files based on their syntax. It supports over 20 programming languages and when it works, it's fantastic.
GUI tool with cross-platform support named after "forske forskjell" (research difference) 🤍
DiffPlug is a free text editor/differ and image viewer/differ. Purchasing a license allows you to diff other kinds of files such as Simulink.
Not just Windows. Multiple OS Support. Free & OSS except for the "Matlib" and/or "Simulink" diffs. Free version supports diff for: File, Folder, Archive, Image, GIT, SVN, (maybe more?)
xxdiff is a QT based graphical file and directories comparator and merge tool. It provides comparing two files, three files.
GumTree is a complete framework to deal with source code as trees and computing differences between them.
FileMerge lets you compare one file to another or one directory to another and merge the files or directories together.
Cant edit text within program.
Some users think FileMerge is a great WinMerge alternative, some don't.
diffoscope tries to get to the bottom of what makes files or directories different. It will recursively unpack archives of many kinds and transform various binary formats into more human-readable form to compare them.
diffoscope is the most popular Self-Hosted alternative to WinMerge.
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Lightweight, good 3 ways merge with 4 sub-windows. Really really visualization. I love it, it works from Linux, Windows to Mac.