Hi, I'm Raphael.

I mainly spend my days running a software business called rami.io GmbH. Our products include the ticketing software pretix, the live event platform Venueless, and the Android app Web Opac App. I'm also a co-founder at abiapp.net.

I'm enthusiastic about open source software and you can find a lot of code written by me on GitHub.

I'm active on Twitter and Mastodon, but you can also find me on LinkedIn.

I live in Heidelberg, Germany. As a hobby, I like to help co-organize events like MRMCD or Chaos Communication Congress.


You can reach me by email at mail [at] raphaelmichel [dot] de and by traditional mail at

Raphael Michel
c/o rami.io GmbH
Berthold-Mogel-Stra├če 1
69126 Heidelberg

I prefer email as a form of initial communication, but since German law requires me to have a phone on this website, feel free to call my company's office at +49 6221 321770.


On occasion, I've given public presentations about things I know about or wanted to learn about. Here are some of the more interesting examples:

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