A powerful, privacy-focused web application for side-by-side comparison of Word documents with intelligent diff highlighting, comprehensive analytics, and multilingual support including Arabic and RTL languages.

Browser-based diff viewer: paste or upload patches, view side-by-side or unified diffs with syntax highlighting.

A pure local diff viewer - view any git diff command in a phabricator-like diff view. For phabricator, you create a diff with `arc diff main` and view it on phabricator server, with this tool you run `local-arc diff 'git diff head~1'` and view diff in browser with a local server

What Changed is a local desktop tool that helps academic authors compare long documents (like .docx, .tex, .md) with zero privacy risk. It features a clean side-by-side layout, synchronized scrolling, and "block-aware" diffing that hides unchanged paragraphs to reduce visual noise.