DeltaWalker vs Diffinity

DeltaWalker is desktop software for comparing, synchronizing, merging, automating, and analyzing files and folders on Linux, macOS, and Windows. Text comparison displays changes inline and supports editing, regular-expression find and replace, and syntax highlighting for close to 50 programming languages. Image comparison examines attributes and pixels; version 3 adds zoom, alignment, and inspection tools. Folder comparison identifies differences between hierarchies and can synchronize by copying, moving, or deleting files. File comparisons support read/write access over (S)FTP(S) and WebDAV, and read-only access over HTTP(S); folder comparisons support read/write access over (S)FTP(S) and WebDAV. Pro and Oro include three-way comparison and automatic merging of non-conflicting text changes. The maker documents integrations with Git, Mercurial, Bazaar, SVN, SourceTree, and Visual Studio, plus scripting and command-line automation. Standard costs $39.99, paid once for one platform, Pro costs $59.99, paid once for one platform, and Oro costs $89.99, paid once for all platforms. A 30-day trial is listed; there is no free plan.

Diffinity is a free Windows utility for comparing and merging text files and folders. It shows line-level differences, highlights changed characters or words, and marks added, removed, and changed lines. A thumbnail view summarizes differences, while search can highlight every instance of a selected word. The maker emphasizes readable source-code comparisons, including improved diffing for C-style code and XML. Editing tools include syntax highlighting, customizable tabs, manual alignment markers, and inline differences that update while typing. Diffinity supports Unicode, detects encoding automatically, and warns when compared files use different encodings. It integrates with Windows Explorer, can run from an external device, and accepts file or folder paths with command-line options, including a folder-diff view. Documentation covers configuration with Git and Perforce Helix P4V. The license allows free personal and commercial use and redistribution of unmodified copies, while prohibiting modification and reverse engineering. Listed release 0.9.6, dated 2026-09-16, requires .NET 8.0.