SyncWatch
8 members, 2 online
Extension for browsers to watch videos together.

Chrome: https://chrome.google.com/webstore/detail/syncwatch/ggiafipgeeaaahnjamgpjcgkdpanhddg
Firefox: https://addons.mozilla.org/ru/firefox/addon/syncwatch/
GitHub: https://github.com/Semro/syncwatch
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SyncWatch right away.