RibbonDiff comparing two versions of a Markdown brief side by side.
Compare two files on Mac in an editable side-by-side view
RibbonDiff is useful when you need more than a read-only diff. You can compare two files, keep both panes editable, search each side, and scroll with the center Ribbon linking related change blocks.
That works well for code, logs, release notes, draft copy, onboarding checklists, and other text files that benefit from live side-by-side review.
Good fits
- Compare two markdown drafts before publishing.
- Check before-and-after incident logs.
- Review release notes, support notes, or checklists.
- Open two text files from Finder, drag and drop, or Terminal.
Suggested sample files
- brief-before.md and brief-after.md — 82 and 93 lines.
- sync-before.log and sync-after.log — 120 and 126 lines.
- checklist-before.txt and checklist-after.txt — 37 and 43 lines.
How to try it
- Open one of the file pairs above in RibbonDiff.
- Scroll to a changed section so the Ribbon connectors are visible.
- Use Find on either side to jump to a keyword such as
rolloutorsupport. - Edit one line in the right pane to show that the comparison stays live.
You can also jump into this flow from Terminal with open -a RibbonDiff brief-before.md brief-after.md.
Related pages
Open two files from Terminal shows a quick shell-to-window handoff. Sample Files collects the full download pack.