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Fathom

Fathom

Dive into your media.

Fathom is an all-in-one desktop client for Jellyfin. It brings your whole setup into one window: movies, shows, music, and Live TV, plus most of Jellyfin's server-side management, so you rarely need the web dashboard. Two optional integrations, Seerr requests and a full YouTube client, live right inside the app.

Everything plays through mpv (via media_kit / libmpv), so you get direct play, hardware decoding, and real subtitle and audio track control.

  • Install: Linux (AppImage) and Windows, self-contained.
  • First-run setup: connect to your Jellyfin server and turn on the optional integrations.
  • Features: the library, the player, radio, casting, and more.
  • YouTube: a complete built-in client, no account and no ads.
  • Updates and channels: how the in-app updater and the Stable / Beta channels work.
  • Troubleshooting: the common launch and playback fixes.

Highlights

  • One player for everything. Jellyfin and YouTube share the same control bar, seek bar, speed control, track pickers, and keyboard shortcuts.
  • mpv-grade playback with direct play, a transcode fallback, hardware decoding, and proper subtitle and audio track selection. A Playback Info overlay shows exactly what is happening (codecs, resolution, the live hardware-decode path, dropped frames).
  • Run your server from the app: users, libraries, scheduled tasks, transcoding, Live TV and DVR, and more, without opening the web dashboard.
  • YouTube, built in (optional): search, subscriptions, local playlists, SponsorBlock, DeArrow, downloads, theater mode. Nothing is sent to YouTube.
  • Requests and ratings: Seerr browse-and-request with approve / decline / manage in place, plus Rotten Tomatoes, IMDb, and more.
  • Internet radio with live time-shift, so you can pause and rewind a live station.
  • Watch together over SyncPlay, interoperable with the official Jellyfin apps.
  • Make it yours: light, dark, and AMOLED themes with a custom accent, a rearrangeable Home, in-app updates, and a fully translatable interface.

Platforms

Fathom runs on Linux and Windows today, with a self-contained download for each. An Android app is planned. macOS and iOS are on the radar but need Mac hardware. See Install for details.

Free and open source

Fathom is free software under the AGPL-3.0 license, built and maintained by one person. If it is useful to you, a star on GitHub or a Ko-fi helps.