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Case studyOur own product

BeeDrop

File transfer with no server in the middle.

Browser-to-browser file transfer: no app, no account, encrypted end to end, and no copy of the file ever stored on our side.

MacBook
iPhone
Direct, end-to-end encrypted0%
Our role
Product strategy · Interface design · Engineering · Relay infrastructure
Technology
WebRTC · DTLS · TURN relay · Chunked streaming · Resumable transfer
File transfer
Launching soon

The problem

Sending a large file between two devices usually means uploading it to someone's cloud, waiting, and trusting that copy to be deleted. Apps and accounts add friction, and office and mobile networks often block direct connections.

Our judgment

  1. 01

    Peer to peer by default

    Files travel directly between browsers over WebRTC, encrypted with DTLS. Our server only helps the two sides find each other.

  2. 02

    A relay for difficult networks

    When a network refuses direct connections, the encrypted stream passes through our relay instead, and is still never stored.

  3. 03

    Built for phones

    Large files are chunked with backpressure so memory stays flat, and transfers resume after a dropped connection.

In production

Screens from the running products, with example data.

A room with five devices. Anyone can offer files, and the others take what they need.
A room with five devices. Anyone can offer files, and the others take what they need.
Receiving a 400 MB file straight from another browser.
Receiving a 400 MB file straight from another browser.
The same room on a phone.
The same room on a phone.

Results

0 bytes
of your files stored on our servers.
24
people in one room, sharing with each other at once.
0
apps to install or accounts to create.

How it is built

Nothing to install

Open a page and you are ready. Works on phones, tablets and computers.

No account

There is nothing to sign up for. A room code is all anyone needs.

Encrypted end to end

Every transfer is protected by DTLS, whether it goes direct or through a relay.

Any size, any number

Large files are chunked with backpressure, so memory stays flat on a phone.

Resumes after a drop

Lose the connection mid-transfer and it continues where it stopped.

Rooms of up to 24

Everyone in the room sees what is on offer and takes what they need.

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