Sven was an outstanding community builder. I met him several times at Linux User Group events and congresses. He connected people old and new, organising so many pre- and post-event gatherings, brunches and so on, that many people got to know each other via Sven. His passion to help new people feel welcome in existing communities certainly helped to grow the Linux and Free Software communities in Berlin, Germany and beyond.

I'm glad to have known him. I just realised that to this day my ~/.vimrc contains settings I once learned in one of his courses (you can find this stuff at https://www.guckes.net/vim/).

R.I.P. Sven.