I Open-Sourced MarketEye — Here's Why (and the GitHub Link)

I open-sourced MarketEye today.

For anyone who missed the first post: MarketEye is a self-hosted competitor price monitor I built because I didn’t want to pay $99/month for Prisync.

The code is now up on GitHub under MIT license.

GitHub: github.com/dachengzi065-gif/marketeye

Why open source?

Three reasons:

1. People actually asked for it.

After my first post here, a few people DM’d me asking to see the code. They’re developers too — they want to modify it, extend it, make it their own. That’s fair. Selling source code to devs is like selling ice to eskimos.

2. Trust.

A closed-source price tracker that “runs on your machine” — you either trust the author or you don’t. Open source removes that doubt. You can read every line, check what data leaves your machine (nothing), and build it yourself if you want.

3. Longevity.

Self-hosted tools have a dirty secret: if the developer disappears, you’re stuck with a broken tool. Open source changes that. Even if I get hit by a bus tomorrow, you can fork the repo and keep going.

What this means for the $49 version

The Gumroad package still exists. It includes:

• The same code, pre-packaged
• Email support (I’ll help you set it up)
• A clear conscience subscription (you’re paying for convenience, not software)

But honestly? If you can run pip install, just clone the repo. It’s free.

What’s next

I’m actively working on:

• Docker image (one-command deploy)
• More scrapers (plugins for different sites)
• Discord/Telegram bot alerts (requested by several people)

PRs welcome. Issues welcome. Feedback welcome.

👉 github.com/dachengzi065-gif/marketeye