WatchState: Sync Watch History Between Jellyfin, Plex, Emby, and Trakt Simultaneously (2026 Guide)
WatchState is a self-hosted tool that synchronizes watch history and play state between multiple media servers and tracking services simultaneously. Run Jellyfin and Plex pointing at the same library? WatchState keeps watched status in sync across both. Migrating from Plex to Jellyfin? WatchState transfers your entire history. This guide covers Docker setup, multi-backend configuration, conflict resolution, and real-world sync workflows.
