Crosswatch
CrossWatch is a self-hosted synchronization engine that keeps Plex, Jellyfin, Emby, SIMKL, Trakt, AniList, TMDb, MDBList, and Tautulli aligned. It runs locally with a web UI on port 8787 where you link accounts, define sync pairs, run them manually or on a schedule, and review stats and history. It includes a built-in tracker with snapshots, profiles for separate setups (e.g. family or different servers), watchlist and progress sync, scrobbling and webhooks to trackers, and tools like Analyzer, Editor, and Captures for stuck or inconsistent items. Configuration persists under /config; set TZ for your timezone.