SyncUp - Watch together – Synchronized video playback across 1000+ sites

Summary: SyncUp enables synchronized video watching on YouTube, Twitch, Kick, and over 1000 HTML5 video sites, with added support for Netflix and Disney+ via a browser extension. It offers real-time sync within 200ms, P2P local file sharing, and requires no signup or downloads, allowing users to create watch rooms instantly.

What it does

SyncUp synchronizes video playback across multiple platforms using Socket.IO for low-latency communication. It supports native playback on numerous sites and extends compatibility to streaming services through a browser extension, while enabling direct P2P streaming of local files.

Who it's for

It is designed for remote viewers who want to watch videos together without account requirements or platform restrictions, and prefer using separate chat tools.

Why it matters

SyncUp solves synchronization lag and platform limitations common in existing watch party tools, providing seamless, cross-platform video sync without extra downloads or signups.