I seem to do a lot of copyediting these days (of friends' papers, application essays, stories, letters, and the like), and keep wishing there was a super-simple way to track my changes and present them to the writer in a visually intuitive way.
This "diffly" app is my first cut at a solution.
It uses Google's diff-match-patch to do the diff. There's no toolbar or lasso or any of that - comments use the Markdown hyperlink syntax, and insertions/deletions are tracked automatically.
Google Docs will show you a diff, but without your comments. They also don't have a live preview of what your changes will look like. It also takes a lot more clicks (and time) to generate the revision history.
The overall point being that Google Docs does a lot more than I need. YMMV.
This "diffly" app is my first cut at a solution.
It uses Google's diff-match-patch to do the diff. There's no toolbar or lasso or any of that - comments use the Markdown hyperlink syntax, and insertions/deletions are tracked automatically.