The best alternative to WinMerge is KDiff3, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to WinMerge and 13 are so hopefully you can find a suitable replacement. Other interesting alternatives to WinMerge are WinMerge 2011, Diffinity, SemanticDiff and Compare.
solid cross platform utility
does not diff files (checksum)
Most users think KDiff3 is a great WinMerge alternative.
WinMerge 2011 series is a fork of the original WinMerge application that compiles without ATL/MFC dependencies to enable zero-budget developers to build WinMerge from sources using Visual C++ Express editions.
It's the same original winmerge
Almost everyone thinks WinMerge 2011 is a great WinMerge alternative.
Diffinity is a diff and merging tool with focus on accurate and easy to read source code diffs. It will compare the content of two files and present the differences in an easy to read line by line and char by char basis.
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.
Compares line by line for coding or config files.
Almost everyone thinks Compare is a great WinMerge alternative.
Use Kaleidoscope to spot the differences in text and image files. Review changes in seconds with the worlds most advanced file comparison application.
Kaleidoscope is the most popular iPad alternative to WinMerge.
Free file and folder merge tool providing two-way comparison, Visual Studio and Atmel Studio integration, enhanced folder sync, syntax highlighting, batch operations, Intellisense, navigation by change type, command line support, and detailed control over merges.
Folder compare, sintax highlights
Some users think Code Compare is a great WinMerge alternative, some don't.
Kompare is a graphical diff and merge tool targeting developers. It allows users to compare two different text files or two directories. It is part of KDE Applications (and formerly part of KDE Software Compilation) and therefore primarily used on Linux and other Unix-like...
ECMerge is a comparison and synchronization tool with two and three-way merge for text and folders and difference on binary, text, images and folders, locally, via FTP/S, SFTP or in version controls. For Windows, Mac OS X, Solaris and Linux.
Visualize folders side-by-side and find immediately which files are different, colors help to understand the diff type. Colors identify older, modified and newer files.
WellCompareDir is a tool to compare and select images with the same name from two folders, and copy to a third folder.
Compare text files or entire directory hierarchies, export and apply patches, and perform non-destructive find and replace operations on text files.
Germany
EU
Sweden
France
Czechia
Italy
Lightweight, good 3 ways merge with 4 sub-windows. Really really visualization. I love it, it works from Linux, Windows to Mac.