WatchParty is described as «Watch videos together with friends. Chat and react in real time to a synchronized stream, with multiple ways of watching video, including screenshare, VM, and YouTube» and is a watch videos together tool in the social & communications category. There are more than 10 alternatives to WatchParty, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Chrome OS. The best alternative is Metastream, which is both free and Open Source. Other great sites and apps similar to WatchParty are StreamParty, Watch2Gether, Hyperbeam and CyTube.WatchParty alternatives are mainly Watch Videos Together Tools but may also be Group Chat Apps or Video Streaming Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of WatchParty.