WinMerge

WinMerge is a utility for comparing and merging files and directories, also available for Mac. It helps users identify how two versions differ and decide which changes should be combined. The program is intended for developers and other users who need to inspect changes across file-based projects.

Its interface presents files side by side, with differences shown at the line level and within individual lines. A location pane provides a file map that summarizes differences across the compared content. WinMerge also includes a syntax-coloring editor, Unicode support, and filtering based on regular expressions for filenames and lines.

The tool integrates with Visual SourceSafe and the Windows Shell, allowing it to fit into existing Windows file and development workflows. Its user interface is translated into several languages. These features support tasks such as reviewing file revisions, examining directory changes, and merging selected updates.

WinMerge is listed in the Developer Tools category and is available here for Mac. It is open-source, which makes its licensing model relevant to users seeking an openly developed comparison and merging tool. MirrorNest does not host a separate copy of the program, but links directly to the official release.