Pulse

Pulse is a peer-to-peer file sharing app that lets you transfer files between devices instantly — no login, no cloud storage, no intermediary.

It uses WebTorrent for peer-to-peer transfers over WebRTC, and Socket.IO for signaling and room management. Files go directly browser-to-browser. Tracker servers carry metadata to facilitate the connection but never see the file contents.

Features

• No login required — open the app and start sharing instantly
• Peer-to-peer — files transfer directly between browsers, never stored on the server
• Cross-device — works across any device with a modern browser
• Real-time — see connected peers and transfer progress live

Try it

• Open the app and share the room link with the other person
• A connection is established once they open the link
• Drop a file to send

Run locally

npm install

Create packages/server/.env:

CLOUDFLARE_TURN_TOKEN_ID=your_token_id
CLOUDFLARE_API_TOKEN=your_api_token

npm run dev

Tech Stack

Client: React 19, TypeScript, Vite, Tailwind CSS, WebTorrent, Socket.IO

Server: Node, Express, TypeScript, Socket.IO

Infrastructure: Cloudflare TURN for WebRTC relay

Screenshots

License

MIT