You should also take a look at https://diff2html.xyz/ and it's integration with https://diffy.org/ to share diffs with co-workers, also both Open Source. (Disclaimer: I created diff2html)
15 karma · joined November 16, 2013
- Added support for unified diffs
- New webpage
- Improved syntax highlight (thanks to @isagalaev from https://github.com/isagalaev/highlight.js)
- Improved diff highlighting colors
- Better file change identification
- Better identification of file renames, copys, changes, etc
- Added synchronised scroll to side-by-side mode