Linus Torvalds is credited with creating the Linux kernel, though he estimates that only about 2% of the code was written by him. The rest comes from 'open-source' contributors around the world who collaborate. 'Open-source' means that anyone can see the code on which it is written, and help to improve or fix it. Other examples of open source software include Bitcoin, Python, Firefox, and Nostr.
Linus Torvalds is a champion of open-source software and a vocal advocate for the benefits of open software collaboration. He has overseen the development of Linux and managed the global community of developers for decades, ensuring quality and direction, having an untold impact on the entire industry.