The two that come to mind are gitlab’s https://about.gitlab.com/handbook/ https://about.gitlab.com/handbook/ and valve’s https://www.valvesoftware.com/en/public

The two that come to mind are gitlab’s https://about.gitlab.com/handbook/ https://about.gitlab.com/handbook/ and valve’s https://www.valvesoftware.com/en/publications https://www.valvesoftware.com/en/publications. I read valve’s a few years ago and actually enjoyed it. I haven’t read any of gitlab’s.