I built ZetaShare because I wanted a file transfer service that doesn’t spy on me — no tracking, no data collection. The project was inspired by ToffeeShare, but after seeing it abandoned and being unable to contact the developers, I decided to build my own alternative.

In case you're curious about how the system works under the hood, here’s a simplified explanation of the current architecture:

How ZetaShare works (simplified):

The sender uploads a file on the website. The server doesn’t store the file — After uploading, the sender receives a 6‑digit ID. This ID becomes the identifier for the transfer session.

The receiver opens the link with the ?id= parameter, for example: https://zetashare.com/?id=123456

When the receiver joins the link, the server sends the receiver’s SDP offer to the sender. (This is part of the WebRTC signaling process.)

The sender responds by sending back their own SDP answer.

Both sides then exchange ICE candidates through the server.

After the WebRTC handshake is complete, a direct P2P connection is established between sender and receiver — and the file starts transferring directly between the two devices.

So the server is only used for:

exchanging SDP offer/answer

relaying ICE candidates …and nothing else. No file, no metadata, no tracking.

Once the WebRTC connection is established, all data flows peer‑to‑peer, fully outside the server.

What works now:

WebRTC P2P transfers — files go directly between users.

No metadata collection — unlike other services that send file metadata through signaling servers (like ToffeeShare), our server only handles SDP and ICE candidates.

No accounts required — just drag, drop, and share.

Unlimited file sizes.

Completely free — no ads at all.

What’s missing (in my view):

Only TLS (WebRTC’s built-in), no proper end-to-end encryption yet.

No password protection.

Links will have an expiration option soon.

Mobile file transfer speed needs improvement.

Coming next:

Password protection

File expiration option

Mobile performance improvements

Proper end-to-end encryption

Try it out: https://zetashare.com

These are the features I could think of, but if you have better ideas, I’d love to hear them. I can’t promise to build everything, but I’ll definitely try.

I’m using AI to help me because my English isn’t perfect — sorry if it sounds a bit AI-generated!

The Failed Crusade to Keep a Rare-Earths Mine Out of China's Hands

What now? Handling errors in large systems

My calendar as a profit generating asset

Making a Custom CPU platform and automated build toolchain

ZetaShare Building private file transfer with WebRTC

Caching is better than mocking

Show HN: ESLint-plugin-no-else-if

Improving GCC Buffer Overflow Detection for C Flexible Array Members

Locker 247

Host a website from an old phone using PostmarketOS

Large-scale trial finds 4-day workweek improves employee well-being

Event-Driven Data Science: EventSourcingDB Meets Python and Pandas

What topic in cyber security should I focus on as AI engineer?

Weight loss drugs are bringing down the country's obesity rate, a survey shows

The DoorDash Problem: How AI Browsers Are a Threat to Amazon

Tech billionaires want to make gene-edited babies

Project Code Rush (Documentary): Does History Repeats with AI? [video]

EU's High‑Speed Rail Action Plan

Visual Agent: Prompt → Image → Segmentation → 3D Mesh in One Chat

Show HN: Regex Challenge – Daily regex puzzles

GitHub Actions broke caching on macOS

The Age of Disclosure

Sperm Whales May Be Speaking in Vowels Too

Tiny improvement for SoA over AoS in Python

Making my 1970's-style renderer multi-threaded

Google Colab Is Coming to VS Code

Show HN: Less‑filtered LLM chat and API

Meet the AI workers who tell their friends and family to stay away from AI

API Versioning in Spring

AI Content Pipeline: My Experience

What topic in cyber security should I focus on as AI engineer?

The Failed Crusade to Keep a Rare-Earths Mine Out of China's Hands

What now? Handling errors in large systems

My calendar as a profit generating asset

Making a Custom CPU platform and automated build toolchain

ZetaShare Building private file transfer with WebRTC

Caching is better than mocking

Show HN: ESLint-plugin-no-else-if

Improving GCC Buffer Overflow Detection for C Flexible Array Members

Locker 247

Host a website from an old phone using PostmarketOS

Large-scale trial finds 4-day workweek improves employee well-being

Event-Driven Data Science: EventSourcingDB Meets Python and Pandas

What topic in cyber security should I focus on as AI engineer?

Weight loss drugs are bringing down the country's obesity rate, a survey shows

The DoorDash Problem: How AI Browsers Are a Threat to Amazon

Tech billionaires want to make gene-edited babies

Project Code Rush (Documentary): Does History Repeats with AI? [video]

EU's High‑Speed Rail Action Plan

Visual Agent: Prompt → Image → Segmentation → 3D Mesh in One Chat

Show HN: Regex Challenge – Daily regex puzzles

GitHub Actions broke caching on macOS

The Age of Disclosure

Sperm Whales May Be Speaking in Vowels Too

Tiny improvement for SoA over AoS in Python

Making my 1970's-style renderer multi-threaded

Google Colab Is Coming to VS Code

Show HN: Less‑filtered LLM chat and API

Meet the AI workers who tell their friends and family to stay away from AI

API Versioning in Spring

AI Content Pipeline: My Experience