Meld is a tool that can compare and merge files and directories. It is a GUI analog to the standard diff install diffutils and patch install patch command line ...
I know of two graphical diff programs: Meld and KDiff3. I haven't used KDiff3, but Meld works well for me. It seems that both are in the standard package ...
The most commonly used tool for that is Ediff, which offers umpteen entry points that correspond to the various needs: comparison of two files, tree files.
XXdiff is a free and powerful tool for comparing and merging files and directories on Linux and other Unix-like systems. It offers advanced ... Diff (CLI) Tool · Vimdiff (CLI) Tool · Sdiff (CLI) Tool · Diffuse – GUI Diff Tool
Beyond Compare is the popular choice for data comparison. Compare folders, text files, images, and tables. Review differences efficiently and merge changes ...