Apart from SoloLearn, what other such resources are available online for free to develop very good programming skills?

Question

I want to refer to other apps or websites like SoloLearn to explore more about programming and increase my skills.
Please suggest.

Answer 1

https://code.sololearn.com/WuvxKZnxrlqO/?ref=app

Answer 2

stackoverflow

Answer 3

Codecademy

Freecodecamp

Odin project

Codewars

W3schools

Codepen

GA Dash Assembly (some free sections)

Programming hero

Https://learntocodewith.me/posts/code-for-free/

Answer 4

stumbled on sololearn recently. so far so good