Danny van Kooten

Hi stranger, welcome!

My name is Danny and I run ibericode, a tiny company from The Netherlands.

I've been making a living selling open-source software products for well over a decade now. On this site you can read some more about me and find links to a small selection of my work.

You can also find me on Bluesky, Mastodon, Github, LinkedIn or sourcehut.

Latest projects

• Koko Analytics

  Privacy-friendly and efficient analytics for your WordPress site.

• Koko Analytics Standalone

  Standalone version of the above: open-source, privacy-friendly and self-hosted.

• Gozer

  Simple, fast and opinionated static site generator.

• 1 Billion Rows Challenge

  C implementation of the [1 Billion Rows Challenge](/blog/2024/1brc/), in standard C99 with POSIX threads.

• Nederlang

  Bytecode compiler and stack based virtual machine for a toy programming language consisting of Dutch keywords.

• Advent of Code

  My solutions for Advent of Code 2015 - 2024.

You can find more of my projects here.

Latest blog posts

• Using Composer with a specific PHP version on Alpine Linux

  Sep 10, 2025

• Benchmarking listing files in a local directory in PHP

  Sep 2, 2025

• Building self-hosted and privacy-friendly website analytics. Again.

  Jan 16, 2025

• Tell me mother

  Oct 16, 2024

• Migrating a Doctrine database from SQLite to MySQL

  Jun 22, 2024

View all posts on my blog.