About

My name is Johan De Geer.

I'm curious about how things work, and I tend to follow that curiosity quite far.

Sometimes that means code, maths, maps, colors, typography, books or building systems for investing and trading. Sometimes it means making something physical, taking something apart, or building a small project just to see if it works. Some of it becomes finished work. A lot of it does not need to.

Much of what I make digitally ends up as open source.

I've travelled to more than 120 countries, and there are still plenty of places I want to see. I keep maps of where I've been and want to go, and of my more recent travels and upcoming plans.