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Hi there 👋

About me...

I’m Sébastien Dubois, a thirty-something Belgian author, CTO, geek, dad, gamer. I’m an IT guy at heart and am very passionate about: software development/design/architecture, the open web, free and open-source software. But I also have other passions such as photography, board/video games, piano, and errr… well many other things that I don’t have time for ;-)

I write quite a lot on my blog, on Medium, and publish a weekly newsletter about IT, Personal Knowledge Management (PKM), personal organization, productivity, and more!

I wrote a book about the wonderful TypeScript programming language and am now working on a series of 12 books called Dev Concepts, which will cover a gazillion concepts of and around software development. Through this project, my goal is to help as many people as possible to understand the big picture and how to become software crafters / full stack developers:

The first two volumes are already available:

The third one is coming soon: Volume 3: Architecture

I'm the owner of a Belgian IT consultancy firm called DeveloPassion.

Personal Knowledge Management

I'm spending a ton of time and energy on Personal Knowledge Management (PKM). I've created the Personal Knowledge Management Library, a collection of curated resources about the topic. It's a great starting point for newcomers, but also a super useful reference for PKM enthusiasts and experts. If you never hear of PKM, then check out the following website:

I am the editor of the PKM Journal, an online publication dedicated to PKM, note-taking and learning.

I have also created two communities centered on PKM. One on Slack and the other on Reddit. You can learn more about this in the following article.

Finally note that I also run a dedicated Twitter account where I regularly share interesting links about this topic.

Focused productivity

I'm currently working on a zen productivity app called focusd.

Software Crafters community

I have created an online community for Software Crafters. You can learn more about it here:

Here's the invite link if you're in a hurry:

Where to find me

You can find me on:

If you wish to contact me directly, you’re probably going to prefer to drop me a mail: sebastien at

Looking for sponsors

I love Open Source and have been contributing for many years now. I wish to continue, but without funding, it's hard to keep going. So if you like what I'm doing and want to support me, then take a look at my Github sponsors page.


My PGP key fingerprint is: 9AEC 7595 2F0F 8E52 65A8 4364 6448 ABB4 AEAD 81A2

You can find my public PGP key here:

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528 contributions in the last year

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Contribution activity

October 2022

dsebastien has no activity yet for this period.

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