https://www.mozillafoundation.org/en/artifacts/togetherjs/
TogetherJS - Mozilla Foundation
With over two decades of global impact, Mozilla Foundation continues to lead the movement for a better technology future—powered by people, open by design, and...
mozilla foundationtogetherjs
https://togetherjs.com/
Mozilla Labs : TogetherJS
Real time collaboration features for your website or app.
mozillalabstogetherjs