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! Early days. Marauder v1.0 is young: the core is validated end-to-end, but many tracker plugins are still alpha — structurally complete and unit-tested, not yet validated against live services. Expect rough edges. See plugin status →

v1.4.0 · MIT licensed · Self-hosted

Watch every torrent thread. Skip the boring part.

Marauder is the self-hosted torrent topic monitor for forum-style trackers the *arr stack can't reach. Modern, secure, observable, and built for 2026 — Go on the backend, React 19 on the frontend, PostgreSQL 18 for state.

Install in 5 minutes Source on GitHub
Bundled trackers
16
Torrent clients
5
Notification targets
4
Test packages
29

see it working

Your watchlist, with live download status.

Once a release ships, Marauder pushes it to your client and tracks it by infohash — so the Topics view shows real per-episode download progress straight from Transmission or qBittorrent, not just "sent".

Marauder Topics list: monitored series with live per-episode download progress bars (E01–E05) delivered through Transmission, each tagged transmission-live.
The Topics list — each monitored series shows its delivered episodes with live progress bars fed back from the download client by infohash.
Marauder dashboard: active-topics, updates-in-24h, errored, and total-tracked tiles above a recent-activity feed of monitored topics.
The dashboard — active topics, 24-hour updates, errors, and total tracked at a glance, with the latest activity underneath.

what it does

Built for the trackers that nothing else can reach.

Marauder is built around a single idea: paste a URL, walk away, never miss a release. Everything else exists to make that one thing reliable, secure, and observable.

Watch any forum tracker

Drop in a RuTracker, Kinozal, NNM-Club, LostFilm, Anidub, Anilibria, Toloka, or generic .torrent URL. Marauder scrapes the topic page and detects when an uploader replaces the file — logging in where the tracker requires it, or fetching anonymously where it does not.

500+ indexers via Torznab and Newznab

First-class plugins for both protocols mean every Jackett, Prowlarr, NZBHydra2, NZBGeek, and DOGnzb indexer becomes a Marauder topic with one URL paste.

Hands off the moment it ships

When a topic updates, Marauder hands the torrent or NZB straight to qBittorrent, Transmission, Deluge, µTorrent, or a SABnzbd watch folder — no clicking, no copy-paste.

Secure by default

Argon2id passwords, ES256 JWTs with refresh-token rotation, AES-256-GCM at-rest encryption for stored credentials, optional OIDC sign-in via Keycloak, audit log out of the box.

Observable from day one

Prometheus /metrics endpoint, structured JSON logs, /health and /ready, a live System status page, and per-topic delivery tracking with live download progress by infohash. Monitor your monitor.

One-file plugin model

A new tracker is one Go file implementing one interface. Twelve linters, 29 test packages, in-process E2E test harness. Adding a tracker is a weekend project.

quick start

From zero to your first torrent in five minutes.

Marauder ships as a four-container Docker compose stack: PostgreSQL, backend, frontend, and an nginx gateway. The only thing you need on the host is Docker — no Go, no Node, no Postgres toolchain.

  1. 1 Clone the repo and copy the example env file.
  2. 2 Generate a master key with openssl rand -base64 32.
  3. 3 docker compose up -d — open http://localhost:34080.
Full install guide See integrations
install.sh 
git clone https://github.com/artyomsv/marauder.git
cd marauder/deploy
cp .env.example .env

# generate a master encryption key
sed -i "s|MARAUDER_MASTER_KEY=.*|MARAUDER_MASTER_KEY=$(openssl rand -base64 32)|" .env

# bring the stack up
docker compose --env-file .env up -d
open http://localhost:34080

supported sources

16 trackers in v1.0. 500+ indexers via Torznab and Newznab.

From CIS forum trackers to the entire English-speaking *arr-stack indexer ecosystem, Marauder reaches every corner of the self-hosted torrent world from a single dashboard.

Generic Magnet stable

Worldwide
Generic .torrent URL stable

Worldwide
RuTracker.org stable

RU
Kinozal.tv stable

RU
NNM-Club.to alpha

RU
LostFilm.tv stable

RU
Anilibria.tv alpha

RU
tr.anidub.com alpha

RU
Rutor.org alpha

RU
Toloka.to alpha

UA
Unionpeer.org alpha

RU
Tapochek.net alpha

RU
Free-Torrents.org alpha

RU
HD-Club.org alpha

RU
Torznab stable

Worldwide
Newznab stable

Worldwide
See all trackers and statuses

faq

Common questions

What is Marauder?
Marauder is a self-hosted application that monitors torrent forum-tracker topics for updates and automatically delivers the resulting torrent or magnet link to your torrent client. It is built with Go on the backend and React on the frontend, and runs as a four-container Docker compose stack.
How is Marauder different from Sonarr or Radarr?
Sonarr and Radarr are built around Torznab indexers. They cannot monitor a forum thread on RuTracker, LostFilm, or NNM-Club because those sites are forums, not API-driven indexers. Marauder is built specifically to watch forum threads, scrape topic pages, and detect when an uploader replaces the .torrent attachment — logging in with your account where the tracker requires it, or fetching anonymously where it does not (NNM-Club). It also speaks Torznab and Newznab so you can use it on top of Jackett or Prowlarr if you want.
Is Marauder a replacement for monitorrent?
Yes. Marauder is a modern, independently built successor to monitorrent — the Python torrent-topic monitor many self-hosters still run but which is no longer actively maintained. It keeps monitorrent's core idea (watch a forum-tracker topic such as a LostFilm or RuTracker thread, and grab the new .torrent the moment an uploader replaces it) and rebuilds it in Go with a React UI, AES-256-GCM encrypted credential storage, OIDC sign-in, Prometheus metrics, and live per-episode download tracking. If you run monitorrent today, Marauder covers the same job on a modern, actively maintained, Docker-native stack.
Which trackers does Marauder support?
16 trackers in v1.0: RuTracker, Kinozal, NNM-Club, LostFilm, Anilibria, Anidub, Rutor, Toloka, Unionpeer, Tapochek, Free-Torrents, HD-Club, plus generic .torrent and magnet URLs, plus Torznab and Newznab indexers (which together cover 500+ sites via Jackett, Prowlarr, NZBHydra2).
Which torrent clients does Marauder support?
qBittorrent (WebUI API v2), Transmission (RPC), Deluge (Web JSON-RPC), µTorrent (token-based WebUI), and a download-to-folder fallback that pairs with SABnzbd or NZBGet for Usenet.
Can Marauder notify me when a topic updates?
Yes. Marauder sends notifications through Telegram, email (SMTP), webhooks, or Pushover — on a new release or a topic error — and you choose which events each notifier listens for. Mark a default notifier per type (one Telegram, one email, and so on) and topics notify those defaults; override a single topic to route its alerts to one specific notifier instead, so you can send one show to a separate chat while the rest stay on your defaults. Notifiers are fully editable — change channels, events, or the default flag any time.
Is Marauder free?
Yes. Marauder is open source under the MIT License. There is no paid tier, no hosted version, no telemetry. You self-host it on your own machine.
How do I install it?
Clone the GitHub repository, copy deploy/.env.example to .env, generate a master key with `openssl rand -base64 32`, and run `docker compose up -d`. The full quick-start is at marauder.cc/install.
Does Marauder support OIDC / Keycloak login?
Yes. Marauder ships with first-class OpenID Connect support via coreos/go-oidc. The dev compose stack includes a pre-built Keycloak realm with a test user so you can verify the flow end-to-end in five minutes.
Does Marauder handle Cloudflare-protected trackers?
Yes. A separate cfsolver sidecar service runs headless Chromium via chromedp, drives the target URL through any Cloudflare interstitial, and returns the resulting cookies. Tracker plugins that opt into the WithCloudflare capability automatically route through the solver.

Coming from monitorrent, or weighing Marauder against Sonarr / Radarr and Prowlarr? Read the side-by-side comparisons.

Stop copy-pasting magnet links.

Marauder is open source, MIT-licensed, and runs in a single docker compose stack. Try it tonight.

Get started Star on GitHub