**Lib's:** - [ShareDB](https://github.com/share/sharedb) - [ot.js](https://github.com/Operational-Transformation/ot.js) - [rich-text](https://github.com/ottypes/rich-text) - [Google Diff-Match-Patch](https://code.google.com/archive/p/google-diff-match-patch/) **Articles:** - [Understanding and Applying Operational Transformation](http://www.codecommit.com/blog/java/understanding-and-applying-operational-transformation) - [Google - Conflict Resolution and Grouping Changes](https://developers.google.com/google-apps/realtime/conflict-resolution) **Videos:** - [Google I/O - The Secrets of the Drive Realtime API](https://www.youtube.com/watch?v=hv14PTbkIs0&feature=youtu.be)
