My name is Loek van den Ouweland, software engineer and trainer with more then 20 years of experience. Creator of Wunderlist, Microsoft Todo and Mahjong. I created websites and apps for a large number of companies in The Netherlands, Belgium and Germany.

I consider exchanging knowledge a vital part of a healthy work culture so I speak at conferences, publish on my blog and teach professionals how to build apps with Python, XAML and C#. Also as co-founder of, the largest online database for extension methods, it is my goal to share know-how. I organize the meetup App development for everyone, where people with no prior programming experience learn how to create cross platform apps with Xamarin and Visual Studio.

An excellent user experience is always in the center of my work because I’m convinced that intuitive and easy-to-use apps are used more often and will be the ones that survive in the market.

On this website I write about the technologies that I work with, like Javascript, rx, Python, Rust, HoloLens, Visual Studio, Unity3D, C#, Git, HTML, my work on Wunderlist and Mahjong Solitaire

I work for great customers like:

6wunderkinder Atos Origin Bavaria DLoG DSM Interpolis Microsoft NXP Philips2 Sioux Via VNU

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