SyncWatch.Video is described as 'With SyncWatch you can watch videos and listen to music from YouTube synchronously with your friends. Just create a room and start watching! SyncWatch is free and no login is required' and is a Watch Videos Together Tool in the Social & Communications category. There are more than 10 alternatives to SyncWatch.Video, not only websites but also apps for a variety of platforms, including Mac, Windows, Google Chrome and Firefox. Most alternatives are Watch Videos Together Tools and Group Chat Apps. The best alternative is Metastream, which is both free and Open Source. Other great sites and apps similar to SyncWatch.Video are Syncplay (Free, Open Source), Watch2Gether (Freemium), CyTube (Free, Open Source) and Sync Video (Free).
Metastream allows you to watch internet videos with friends. It synchronizes media on websites so you can watch together. Watch or listen together: Start a session and invite your friends by sharing your friend code with them.
Syncplay program allows you and your friend/partner/family member to watch same video file simultaniously on different PCs and different location by syncing playback of MPC-HC, mpv, mplayer2 and VLC players.
Watch2Gether lets groups of users watch videos in-sync together. At the same time users can communicate through a build-in chat-room and use web cam and audio chat. Available media sources are Youtube, Vimeo, Dailymotion and Soundcloud.
Web application that enables people to watch the same thing at the same time across the globe while interacting via video and text. Currently supports Netflix, Amazon, YouTube, Vimeo, Crunchyroll, etc.