Linus Trovalds didn't just create a kernel but also a version control system and even a scuba diving planning tool (https://en.wikipedia.org/wiki/Subsurface_(so

Linus Trovalds didn't just create a kernel but also a version control system and even a scuba diving planning tool (https://en.wikipedia.org/wiki/Subsurface_(software) https://en.wikipedia.org/wiki/Subsurface_(software)). In the latter, he also touched some GTK code: https://github.com/torvalds/subsurface-for-dirk/commit/c0adfdc41bc5bea580f85a29dc073678fcb617e8#diff-dff395e8bda6d155ed50e7984f6527e9 https://github.com/torvalds/subsurface-for-dirk/commit/c0adf... Trovalds has much more breadth than you give him credit for.