Ten years ago to the day I registered my company “Xenoage Software” in Schrobenhausen, Germany. Since then, it developed from a hobby project over an additional income during my studies to a full-time job. We have successfully finished many projects like 3D simulations and games, data-driven applications, mobile apps and web projects. But our favorite non-commercial project is still Zong!, the open source music notation software, and we are trying to spend as much time for the project as possible. A brief history of the company is available in German in our home building blog.