Binary package “meld” in ubuntu trusty

graphical tool to diff and merge files

 Meld is a graphical diff viewer and merge application for the Gnome
 desktop. It supports 2 and 3-file diffs, recursive directory diffs,
 diffing of directories under version control (Bazaar, Codeville, CVS,
 Darcs, Fossil SCM, Git, Mercurial, Monotone, Subversion), as well as
 the ability to manually and automatically merge file differences.