Last week I had the opportunity of visiting KAUST, and take part to the Winter Enrichment Program, organizing a seminar on Open-Source Software for Computational Engineering with a colleague and friend Matteo Icardi, who was my host at KAUST. It was a wonderful experience, KAUST is an impressive campus, and the students were very interested in how to use free and open-source software to solve complex engineering problems. We talked about the founding principles of free software, and of the differences in comparison to open-source software. Then we had an introduction to engineering tools. A lot of fun! Thank you for the opportunity!