P4Merge is described as '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' and is a Diff Tool in the development category. There are more than 25 alternatives to P4Merge for a variety of platforms, including Windows, Mac, Linux, Web-based and BSD apps. The best P4Merge alternative is WinMerge, which is both free and Open Source. Other great apps like P4Merge are Meld, Beyond Compare, KDiff3 and Diffchecker.