Cat that kicks an exclamation mark.
The Zerocat Label
True Free-Design Hardware Tools and DIY-Projects

Call for Crowdfunding!

Dear Folks! Zerocat’s Chipflasher applies for FSF’s Respects-Your-Freedom (RYF) Certificate. Sources are tagged, a sample device has been shipped, a free-software compliant storefront has been proposed... Read the full story. Let’s get the Chipflasher onto the FSF Website!


Zerocat is run by Kai Mertens. Friends and contributers are Hoki, Tomás and Ricardo, as well as some pioneer customers and supporters. We are running a small mailing list and we use PGP-encryption with GnuPG.

For any question or feedback, feel free to get in touch. Our PGP-key is available for download from this site, see PGP-Key.

If you need to see a tool or hardware which does not yet exist as free-design, we would love to hear about it!

Please also be aware of networks like These will be of interest to you if you are looking for a vision of free-software business practices.

To sum up: If you want to do things differently, there are ways to do it! Spread the word, tell people about it and engage a free-design hardware hacker! We will all win ;-)