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Dev.to
7/8/2026
The original title is: "ZeroRelay: Open-source P2P browser file sharing via WebRTC with no server storage"

The original title is: "ZeroRelay: Open-source P2P browser file sharing via WebRTC with no server storage"

Original: ZeroRelay: Direct Browser-to-Browser Sharing - No Server Ever Sees Your Data

Short summary

ZeroRelay is an open-source P2P mesh app that lets browsers share text, code, and files directly over WebRTC with no central server storage. A Cloudflare Durable Object handles signaling only, while each peer persists data locally in IndexedDB via Dexie. The MIT-licensed project is self-hostable and currently supports same-LAN transfers with STUN-only NAT traversal, with TURN support still pending.

  • Open-source P2P browser-to-browser file sharing via WebRTC with zero server storage
  • Cloudflare Durable Objects handle signaling only; all data stays in browser IndexedDB
  • MIT-licensed, self-hostable; currently STUN-only, TURN support not yet implemented

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