SyncWatch
Watch videos in sync with friends using SyncWatch, a browser extension that lists support for Firefox, Chrome, and Opera.
About SyncWatch
SyncWatch is a browser extension for watching videos synchronously with friends. Users enter a name and room name, connect, and share video page links with others in the same room.
It lists support for Firefox, Chrome, and Opera. The project is open source under the MIT license and includes instructions for running the synchronization server locally.
Key features
- Watch videos synchronously with friends in shared rooms
- Create or join a room with a name
- Share video page links to room members
- Enter display name before connecting to a room
- Run synchronization server locally from source code
- Supports Firefox, Chrome, and Opera
Best for: People who want to watch the same online video at the same time from different locations.
Good for
- Open source under MIT license
- Supports Firefox, Chrome, and Opera
- Includes instructions to run server locally
Watch out for
- All participants must install the extension and join the same room
- Room members must manually open shared video links
SyncWatch at a glance
- Website
- github.com/Semro/syncwatch
- Category
- Software & Utilities › Media Players & Servers
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Browser extension
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Media Players & Servers
SyncWatch alternatives
Tools and sites you could use instead, ranked by how closely they match.
Metastream synchronizes streaming media across Chromium and Firefox, with sessions, chat, a shared queue, and host-managed playback permissions.
ff2mpv adds a browser action for opening the current page URL or a selected link in the mpv media player.
H5player enhances audio and video playback on websites, with listed features including playback speed controls, screen capture, and downloads.
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VideoClip creates video and audio clips with mpv, saving them as MP4 or WebM and allowing subtitles to be embedded.
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CatNip provides a terminal audio visualizer for Linux, Unix, macOS, and Windows.
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Synchronize subtitles automatically for mpv with AutoSubSync MPV, which lists ffsubsync and alass as supported backends.
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24 alternativesPopular in Media Players & Servers
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SyncWatch FAQ
How do I start a session with friends?
Install the extension, click the plugin icon, write your name and room name, click 'connect', then share the room name so others can follow the same steps.
How do I share a video with the room?
Go to the page where the video is located and click 'share' to send the link in the room. Others in the room should then open that link.
Can I run the server locally?
Yes. Clone the repository, move to packages/syncwatch-server, install packages with npm ci, then run the server with npm run start:dev.
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