Although I could sell the softwares I make,
I think it's more fair to make it available for everyone.
Afterall I didn't pay to learn what I know, everything was public knowledge, it just took time to find, understand and combine all the interesting ressources available on internet.
I publish the results of my researches so that others can hopefully save some time.
Overall I code mainly for myself, but if I can also help others and receive some grattitude, then it's even better !