Your next internet downloader, in Rust.

Everything you need to download from the internet, in one place.

Multi-protocol

One engine speaks every protocol

From plain HTTPS to BEP 52 hybrid torrents with WebSeed mirrors, HLS streams, Usenet, and a giFT IPC bridge. Add a URL or a magnet link and Risuko routes it to the right handler, all within a single unified queue.

HTTP / HTTPSBitTorrent v1+v2 + WebSeedMagnetFTP / SFTPM3U8 / HLSUsenet / NZBED2KADC / DCGnutella / G2giFT bridge

Usenet / NZBED2KADC / DCGnutella / G2giFT bridgeHTTP / HTTPSBitTorrent v1+v2 + WebSeedMagnetFTP / SFTPM3U8 / HLS

Copy a link, start a download

Risuko watches your clipboard. Copy any supported URL or magnet link and it offers to queue it instantly. No window switching, no pasting. Just copy and go.

Clipboard monitoring

A quarter of the memory. A sixth of the CPU.

Risuko replaced the aria2 backend with a native Rust engine. Measured while idle with psrecord over 60 seconds, it uses dramatically less than the original Motrix it is based on, with zero memory leaks.

smaller binary

219.3 MB → 35 MB

less memory

~425 MB → ~120 MB

less peak CPU

~145% → 25%

Motrix (original)219.3 MB · Electron + aria2

Risuko35 MB · native Rust

Baseline: the original Motrix project. Profiles captured with psrecord.

Drop-in Aria2-compatible RPC

Risuko exposes an Aria2Next-compatible JSON-RPC listener. Point AriaNg, PeerBanHelper, or any Aria2 client you already use straight at Risuko. Copy the RPC URL and you are connected.

Configurable listen port and secret token
Works with existing Aria2 front-ends and tooling
One-click “Copy RPC URL” and secret manual

See exactly what you have downloaded

Break down volume by protocol and month, scrub speed history in adjustable time buckets, and pick any date range. Every byte HTTP, BitTorrent, and Usenet moved is accounted for.

Per-protocol and per-month totals
Speed history with adjustable buckets
Custom date ranges: 1d, 7d, 30d, 6mo, 1yr

CLI & Node.js

Scriptable from the terminal or your code

The same engine that powers the desktop app is a first-class command-line tool and an embeddable Node.js library. Automate downloads in shell scripts or wire them into your own app.

examples/cli.sh

$risuko download https://example.com/file.iso -t 16

$risuko download "magnet:?xt=urn:btih:abc123..." --seed-ratio 1.0

$risuko status --json

$risuko pause a1b2c3d4 && risuko resume a1b2c3d4

CLI reference

examples/quick.ts

import { startEngine, addUri, tellStatus } from "@risuko/risuko-js";

await startEngine();
const gid = await addUri(["https://example.com/file.zip"], {
  split: "16",
});
const status = await tellStatus(gid);
console.log(`${status.completedLength}/${status.totalLength}`);