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WebTorrent

Free plan APILinuxMacWebWindows

What WebTorrent is

WebTorrent is a free torrent client for browsers and desktop that can start playing audio or video before a download finishes. Seeking requests the needed pieces as playback moves. The browser client supports video, audio, images, PDFs, HTML, and other content, subject to browser support. WebTorrent is written in JavaScript and uses WebRTC for peer-to-peer transport in browsers. Its developer API is available in Node.js and the web, and the package can be installed with npm. It also works with Browserify and Webpack. WebTorrent Desktop connects to BitTorrent and WebTorrent peers, including Transmission, uTorrent, and instant.io. The project is open-source, non-profit software under the MIT License, with non-commercial plans. Browser clients can only download torrents seeded by a WebRTC-capable client. Live streaming is not included out of the box, though a solution can be built on top of WebTorrent. The project supports web, macOS, Windows, and Linux. Help is available through Discord, GitHub discussions, and issue reporting.

Who it suits

WebTorrent suits people seeking a free, non-commercial torrent client or developers building peer-to-peer delivery into web and Node.js projects. Browser users need torrents seeded by a WebRTC-capable client.

What it does well

Audio and video playback can start before downloads finish.
Supports video, audio, images, PDFs, and HTML in browsers.
Provides the same developer API in Node.js and the web.
Desktop connects to BitTorrent and WebTorrent peers.
Free, open-source software under the MIT License.

What to know first

Browser clients require a WebRTC-capable seeder.
Live streaming is not provided out of the box.
Plans are non-commercial.

Limits

Browser clients can only download torrents seeded by a WebRTC-capable client. Live streaming is not provided out of the box, although a solution can be built on top of WebTorrent.

Plans

Plan	Billed and limits	Price
WebTorrent Desktop	Free · non-commercial · ad-free · beta	Free
WebTorrent	Free software · open source · non-commercial	Free

As webtorrent.io lists them, read 4 Oct 2026. The maker's own page has the final word.

Getting started

Visit the WebTorrent website.
Choose the browser client or a desktop option for web, macOS, Windows, or Linux.
For browser downloads, use a torrent seeded by a WebRTC-capable client.
Developers can install WebTorrent with npm and use its Node.js or web API.

Verdict

WebTorrent combines browser-based peer-to-peer streaming with a desktop client and a developer API. Browser download limits and the lack of built-in live streaming are important constraints to consider.

Questions

Is WebTorrent free?

Yes. The listed WebTorrent plans are free; the software is open source and non-commercial.

Which platforms does WebTorrent support?

It supports web, macOS, Windows, and Linux.

Is WebTorrent open source?

Yes. The project describes it as non-profit, open-source free software under the MIT License.

Can I use magnet links?

Yes. Magnet links are supported.

Can the browser client play files while they download?

Yes. Audio and video playback can start before the download finishes, subject to browser support.

What limits browser downloads?

Browser clients can only download torrents seeded by a WebRTC-capable client.

Facts from WebTorrent's own pages

Desktop compatibility: WebTorrent Desktop connects to BitTorrent and WebTorrent peers, including Transmission, uTorrent, and instant.io. · webtorrent.io, 4 Oct 2026
Developer API: WebTorrent provides the same API in Node.js and the web, and can be installed with npm. · webtorrent.io, 4 Oct 2026
File support: The browser client supports video, audio, images, PDFs, HTML, and other content, with streaming subject to browser support. · webtorrent.io, 4 Oct 2026
Founded: 2013 · webtorrent.io, 28 Sept 2026
Integrations: WebTorrent works with Browserify and Webpack, and the FAQ lists Vuze and webtorrent-hybrid among WebRTC-capable clients. · webtorrent.io, 4 Oct 2026
Limit: Browser clients can only download torrents seeded by a WebRTC-capable client. · webtorrent.io, 4 Oct 2026
Open source: The FAQ says WebTorrent is non-profit, open source, and free software under the MIT License. · webtorrent.io, 4 Oct 2026
Privacy: The FAQ says clients can download from a torrent file or magnet link without trusting servers or peers. · webtorrent.io, 4 Oct 2026
Product: WebTorrent is a streaming torrent client for web browsers and desktop. · webtorrent.io, 4 Oct 2026
Security note: The FAQ says WebRTC data channels do not reveal a user's true public IP address to a website when a VPN is enabled. · webtorrent.io, 4 Oct 2026
Streaming: Video and audio playback can start before a file finishes downloading, and seeking fetches needed pieces on demand. · webtorrent.io, 4 Oct 2026
Streaming limit: WebTorrent does not provide live streaming out of the box, though a live-streaming solution can be built on top of it. · webtorrent.io, 4 Oct 2026
Support: The project offers support through Discord, GitHub discussions, and issue reporting. · webtorrent.io, 4 Oct 2026
Technology: WebTorrent is written in JavaScript and uses WebRTC for peer-to-peer transport in browsers. · webtorrent.io, 4 Oct 2026
Use cases: The FAQ describes peer-assisted delivery, CDNs, and app delivery as WebTorrent use cases. · webtorrent.io, 4 Oct 2026

Where WebTorrent stands on Freedom251

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