Among copious open-source content management system(CMS) or Markup-to-HTML software, e.g. MediaWiki, WordPress, Hugo, Hexo, Sphinx, Typecho is more lightweight than WordPress, and by utilizing PHP, it is full-featured compared to Markup-to-HTML software that requires a webserver to host the generated static html and js files. Discourse is based on Ruby on Rails and provides very handy user interface.
Caddy has a simple yet powerful configuration syntax, yet it provide nearly the same functionality of nginx.
Linux is more secure than Windows and supports more hardward than BSD family. Among all Linux distributions, Archlinux is the best one as it favors KISS principle, always come with up-to-date software packages using an efficient package management system.