CyTube is a project I started in early 2013 as a hobby project to build my own clone of synchtube.com (which shut down in March 2013).
The basic concept is that users register channels where connected viewers can watch videos from different video hosts (e.g., YouTube, Twitch) and the playback is synchronized for all the viewers in the channel.
Each channel has a playlist where users can queue up videos to play, as well as an integrated chatroom for discussion.
The official server is located at https://cytu.be, but there are other public servers hosted for various communities.
The installation guide for server administrators is located on the wiki.
Please check if the FAQ answers your question already.
For bug reports and feature requests, please open a GitHub issue. To report a security vulnerability, or to discuss an issue with https://cytu.be itself (unrelated to the code), please send me an email: firstname.lastname@example.org
Please be courteous and search through the open and closed issues for your request before submitting a new one.
General help with the software and the website is also available on the IRC channel at irc.esper.net#cytube during US daytime hours.
Original source code in this repository is provided under the MIT license (see the LICENSE file for the full text).