WinMerge Alternatives for Mac OS X

KDiff3 is a versatile graphical file and directory comparison and merging tool, designed to help users identify differences, merge changes, and synchronize files and folders efficiently. It supports comparing up to three files or directories simultaneously, offering detailed character-by-character analysis and a robust merge editor.

Kaleidoscope is a powerful and flexible diff and merge tool for macOS, designed for developers and content creators to compare text, images, and folders with ease. Its intuitive interface and comprehensive feature set streamline workflows for identifying changes and resolving conflicts.

SmartSynchronize is a robust, multi-platform file and directory comparison and merging tool. Ideal for developers, writers, and anyone needing to effectively manage file differences and synchronize content across folders.