What is Hugo
Hugo is a open-source static site generator written in Golang.
It allows you to write web pages with markdown and some shortcodes.
For more about Hugo, see gohugo.io
What is Hugo Theme Star Ranking
Hugo has a lot of site templates created by many volunteers. All of them are listed in Hugo Themes.
Hugo Theme Star Ranking is an unofficial fan page listing top 100 of them in order of GitHub star count.