
Willem L. Middelkoop MSc BICT
IT business owner, investor, hacker and software developer






Lemmid Store
With Lemmid Store business owners can easily sell products online via their own website, independently from big (powerful) platforms.

DigiDef
DigiDef is a specialised bureau that analyses existing computer systems and offers help with improving security.

Lemmid B.V.
Lemmid provides internet services for selected Dutch and international customers. Together with the customer Lemmid develops new IT products and services, including websites, web applications and apps.

dsd 164 B.V.
dsd 164 B.V. is a publisher of mobile apps for the international market. Apps from dsd 164 B.V. are downloaded millions of times.

Willem & Laurentz Holding B.V.
The Willem & Laurentz Holding B.V. invests in technology related companies. It is actively contributing to the development of new initiatives.

Snake '97
Play Snake like it is 1997. This is a remake of the original Snake, complete with dot-matrix display and monotone sounds. The game has millions of fans world wide.
Art of visualisation
Creating mouth-watering food photos

You learn from working with experts and this month I had the privilege to work with a professional food photographer, my brother. Together we set out to photograph the entire menu of Café Carbòn in Amsterdam, enjoying the fabulous food afterwards. Read along for some food photography takeaways!
Three tips to make a content strategy work
Maximise the effect of your writing

When you write for your blog or for your company's website, there are things you can consider to maximise the discoverability, longevity and impact of your writing. Leverage the energy you put in into your words. Today I share with you three of my lessons learned while writing for this website.
Wearing two watches
Both a mechanical and a smartwatch

For the past weeks I have been wearing two watches, and boy this is a thing! I love my mechanical watch, but I needed the modern connectivity of a smartwatch. I couldn't choose between them, so I decided to wear both. It's not as bad as you think, let me share some thoughts on my experience.