Package texlive-latexdiff

Determine and mark up significant differences between LaTeX files

http://tug.org/texlive/

Latexdiff is a Perl script for visual mark up and revision of significant
differences between two LaTeX files. Various options are available for visual
markup using standard LaTeX packages such as color. Changes not directly
affecting visible text, for example in formatting commands, are still marked in
the LaTeX source. A rudimentary revision facility is provided by another Perl
script, latexrevise, which accepts or rejects all changes. Manual editing of
the difference file can be used to override this default behaviour and accept
or reject selected changes only.

Version: svn77278

General Commands
latexdiff determine and markup differences between two latex files
latexdiff-vc wrapper script that calls latexdiff for different versions of a file under version management (CVS, RCS or SVN)
latexrevise selectively remove markup and text from latexdiff output