DeltaWalker vs Meld

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.

Meld is a free, open-source desktop tool for comparing files, directories and version-controlled projects. It provides two-way and three-way comparisons, with live updates while files are edited and merged. Three-way merge assistance handles conflicts and shows the base version. Folder comparisons identify missing or modified files, let users open deeper file comparisons, and can ignore selected files or folders. Meld supports Git, Mercurial, Bazaar and Subversion, including use with tools such as git mergetool. It is packaged for most Linux and Unix distributions and is available through Flathub. Windows users download an installer; automatic updates and portable installations are not supported. Meld is not yet supported on macOS, although the site points to semi-official builds and package-manager options. The project is licensed under GPLv2 or later, except as noted. The listed Meld plan costs nothing, and the stable release shown is 3.24.0.