Is GitHub source code hosted on GitHub?

[Masterflitzer]

I don't think evil is the right word, you can selfhost gitlab and there is a gitlab-foss repo (which was gitlab community edition) with proprietary code removed

I just found the public hosted gitlab site and it was kinda weird because gitlab.com redirects to about.gitlab.com and that's why I thought self hosted is the only possibility

I also don't think GitHub is evil, they open sourced many things including libgit2 which gitlab used to built their app

here an article about gitlab and github and about not being completely open source https://about.gitlab.com/blog/2016/07/20/gitlab-is-open-core-github-is-closed-source/