latexdiff
Determine differences between two LaTeX files. tldr-pages
On several platforms
Several platforms
Determine changes between different versions of a LaTeX file (the resulting LaTeX file can be compiled to show differences underlined)
latexdiff old.tex new.tex >diff.texIdentifyDetermine changes between different versions of a LaTeX file by highlighting differences in boldface
latexdiff --type=BOLD old.tex new.tex >diff.texIdentifyDetermine changes between different versions of a LaTeX file, and display minor changes in equations with both added and deleted graphics
latexdiff --math-markup=fine --graphics-markup=both old.tex new.tex >diff.texIdentify