I am a long time Jekyll user and I still think it's a great tool for blogs, but by far the best SSG for documentation websites I have found is Docusaurus. (https://docusaurus.io/)
I resisted trying it for the longest time because I didn't want a JavaScript based tool, but I am glad I caved. It's so easy to get started, crazy fast, and the sites are absolutely beautiful out of the box yet easy to customize. The mdx support is awesome too.
Somehow I missed Docusaurus when I surveyed documentation generators—it looks very good!
I can understand the desire to want something not written in JavaScript, and I certainly have my own language prejudices, but when I surveyed static site generators, language choice was all over the map. Like, I was willing to wrangle Ruby installations and gems to get Jekyll working, something I have nearly no experience with.
I resisted trying it for the longest time because I didn't want a JavaScript based tool, but I am glad I caved. It's so easy to get started, crazy fast, and the sites are absolutely beautiful out of the box yet easy to customize. The mdx support is awesome too.