Beyond Compare vs KDiff3

Beyond Compare compares folders, text files, images, and tables so users can inspect differences and merge changes. Folder comparisons can include recursive subfolders and filters based on modified time, size, filename case, or file content. Text tools provide syntax highlighting, inline editing, and options to ignore whitespace or comments; Pro adds two-way and three-way text merge. Other supported data includes CSV, tab-delimited files, HTML tables, Excel worksheets, binary files, images, and audio tag data. Folder Sync can reconcile data with disks, FTP servers, and zip files, and command-line scripts can run scheduled syncs. Pro also includes secure FTP connections, remote Subversion repositories, and cloud storage options such as WebDAV, Amazon S3, Dropbox, and OneDrive. It runs on Linux, macOS, and Windows. The license is a one-time purchase, with Standard Edition at $35, paid once per user and Pro Edition at $70, paid once per user. Free evaluation is available, but continued use requires a license.

KDiff3 is a free, open-source desktop app for comparing and merging files and folders on Linux, macOS, and Windows. It can compare two or three text files or folders, showing differences line by line and character by character. For merge work, it can combine changes automatically and includes an editor for resolving conflicts, including three-way merges. Folder comparison and Git integration are supported. KDiff3 handles Unicode, UTF-8, and other file encodings; users can highlight or hide whitespace and comment changes, and print differences. It also supports version-control keyword and history merging, with network transparency through KIO. Its listed license is GPL-2.0-or-later. The Free plan costs nothing, and there is no free trial. Linux installation options include Discover or another AppStream store, a distribution package manager, or Flathub. The app page links to a handbook, forum, and bug-reporting page. KDE describes itself as an international community building and distributing free, open-source software since 1996.