WARP

WARP moves files directly between two devices without ever storing them in the cloud. When a sender and receiver connect, a WebRTC data channel opens between their browsers and the file streams across it in encrypted chunks — the bytes go straight from one machine to the other.

Transfers are end-to-end encrypted with AES-256-GCM and integrity-checked with SHA-256. Because nothing is uploaded to a server, there is no size cap, no account, and no retention: once the transfer finishes, no copy of the file exists anywhere but the two devices.

The only server-side component is a lightweight signalling layer to introduce the two peers, running on Cloudflare Pages and Workers at zero infrastructure cost. Everything else happens in the browser, on every platform.