KoalaSync

Sync Netflix, Emby & more perfectly. Free & open-source.

3 votes·1 comment·Jun 8, 2026

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About

KoalaSync perfectly synchronizes video streams across multiple devices. It works universally with Netflix, YouTube, and any HTML5 player, but was specifically built to support self-hosted servers like Emby, Jellyfin and Plex. No accounts, no tracking. Features include TV show auto-syncing and smart tab matching. It's 100% free, open-source, and you can even self-host the WebSocket relay server for complete data privacy.