Two-column web-based git difftool
webdiff displays side-by-side two-column diffs in the web browser.
It supports syntax highlighting, image diffs, eliding & expansion of common lines and multi-file diffs.
It integrates with git.
pip install webdiff
Then run via one of these:
git webdiff <arguments>
webdiff <left_dir> <right_dir>
See https://github.com/danvk/webdiff/ for more information.