latexdiff is a small console Perl / TeX Live utility for finding and highlighting the differences between two TeX / LaTeX files.
LaTeX is a popular set of macrodactylini (the macro package) of the computer typesetting system TeX, which makes it easier to set complex documents. The package allows you to automate many of the tasks of typing and preparation of articles, besides the basic set, there are many expansion packs (thanks to the system’s capabilities is virtually unlimited).
latexdiff compares two TeX / LaTeX file and highlights the significant differences between them (ignores the number of spaces and position of line breaks), like utility, file comparison diff (from a package diffutils). Utility at the end of the comparison, generates a new LaTeX file that contains the differences with the notes (adds special commands to highlight the differences).
latexdiff offers a variety of options for visual presentation of results, where visual highlighting is not possible, differences are noticed in the note. The utility comes with a script latexrevise, which allows to accept or reject any differences found. To accept or reject some of the differences, you need to manually edit the diff file.
License: GNU General Public License version 3.0 (GPLv3)