
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.
Tablet as Tool
Appreciating iPad Pro: A Different Perspective

The iPad Pro's utility has sparked much debate recently. Some users argue it's a disappointment, failing to meet expectations set by traditional laptops. However, there are less obvious benefits to the iPad worth considering. This blog post delves into these advantages and shares insights into the personal experience of using an iPad Pro.
Using AI to generate code
Programming with super powers

As part of my software optimisation efforts to cut cloud costs, I needed to replace an existing piece of inefficient server software with something that uses more robust (yet fragmented) tooling available in Debian GNU/Linux. Could the GPT4 language model deliver me some AI magic? Read along!
Working Offline First
Learning from a 15-year old ThinkPad X200

As part of a greater plan to optimise my entire workflow, I am doing a little experiment this month: using a 15-year old ThinkPad X200 laptop as main computer. It’s from an era before “the cloud”, popular among free/libre software enthusiasts. What can we learn from this antithesis of modernity?