I’m Michal Mazurek, and I’m a UNIX engineer.

I’ve been programming since I was 12 and running Linux and BSD servers since 14 - always with my trusty 1989 IBM Model M keyboard. I treat programming as art and don’t rest until my code is perfect. And past membership in the rigorous OpenBSD project taught me what perfect means.

Me in 2005 installing Linux on my friend's computer.

In 2014 I graduated Wroclaw University’s Computer Science department.

In 2018 I quit my job and tried my chances in business.

Me in 2019 working on my products. My keyboard still intact.

I live in Krakow, and after work I like to cook and dance the Argentine tango. Or, you know, at least I used to before this whole plague thing.

My Computers

See the full list.

My Projects


I became the administrator of longturn.net in 2010. Longturn is a game of FreeCiv where one turn takes one day. A typical game lasts a few months.

After spending countless hours executing grand strategies I’m no longer active.


In 2012 I worked on xombrero, a secure web browser with vi-like key bindings. But the web browser ecosystem is a fierce one, the project is now dead.


That same year I worked for a few months on Bitrig, an OpenBSD clone.


In 2016 I was a member of the OpenBSD projects, working on the process scheduler.

My Products


Started around 05.2018. My first failed product.

Every entrepreneur starts with a failed idea. It’s usually a product for a customer base that’s famous for not spending any money. Maybe it’s a tool to help barbers with their bookings, or maybe an app that helps you find interesting events. For me it was an app that showed the lunch menu of restaurants in Krakow. Naturally, nobody wanted to pay for it.

Code Dog

First commit on 10.08.2018. Code Dog is my first money maker.

At one of my jobs my manager would spend a few minutes each morning pinging engineers to merge their PRs. It was neither fun nor productive. But what if I could automate it?

An app for GitHub already exists, so I solved this problem for GitLab and BitBucket.

See https://code-dog.app.


First commit on 05.05.2019. My second failed product.

I didn’t just want to send automated welcome messages to my users, I wanted to learn about them first. GeekMail creates a draft in Gmail, allowing me to customize the message for each user.

Unfortunately soon after I released the app Google enforced a more strict policy for Gmail apps. Because I cannot affort the “$15,000 - $75,000” required to undergo a security check by Google the future of this app is bleak.

See https://geekmail.app.


First commit on 28.05.2019. My second money maker.

To grow Code Dog I wanted to learn more about my niche. I wrote an app that notified me when my keywords were mentioned on Hacker News, Reddit etc. It turned out that other people were happy to pay for this service as well! I got my first user on 02.06.2019, just a few days after my first commit. I’m currently focused on growing this tool.

See https://syften.com.