I build small software that solves one concrete problem — usually for me, my family or a handful of friends. All of it runs on my own server in Germany, behind my own single sign-on.
I write down what I decide along the way: most of the projects here carry more architecture decisions than lines of code per feature.
“A volume I got halfway through on the tablet has to open at exactly that page on the phone. Without me doing anything for it.” Manga reader for Android and the browser.
Digital Advent calendars to give away. Marketing site, customer portal, back office and a multi-tenant calendar PWA — eight repos merged into one monorepo.
A map of the restaurants we have been to, blind ratings, a date planner. Four people, one evening a month — and nineteen architecture decisions across 42 commits.
My own interface and API for image generation over BFL FLUX and GPT Image. Running since 2022, and the only project here you can look inside.
Collects the supermarket leaflets for your own region, makes them searchable and sends matches to your phone. Four hand-written source parsers.
A 3D-printed NFC brick on the desk. Tap it and focus is on, the apps you picked are blocked. Local, no backend, not in the Play Store.