Package: latexdiff

"latexdiff" package binaries on Debian:

/usr/bin/latexdiff-cvs /usr/bin/latexdiff /usr/bin/latexdiff-fast /usr/bin/latexdiff-git /usr/bin/latexdiff-rcs /usr/bin/latexdiff-svn /usr/bin/latexdiff-vc /usr/bin/latexrevise

You may install this package on Debian with apt-get install latexdiff