Can github projects be used commercially?

Question

GitHub

I want to use some projects in mobile applications that will have ads.

Answer 1

У каждого уважающего себя проекта есть лицензия, там все написано.
Например, Apache 2.0, MIT, BSD - позволяют и коммерческое использование
Если лицензии нет, то нельзя.

Answer 2

Also an interesting question.
There are several developments of the neural network, I want to finish it and use it as a closed code in a mobile application. Does the author know?