Hugo is an open-source static site generator that features fast build times, flexible themes, support for multiple content formats, multilingual websites, live reloading, and an active community. It allows developers to easily create and deploy SEO-friendly and mobile-responsive websites.
Bootstrap is the most popular CSS Framework for developing responsive and mobile-first websites.
Documentation themes are built specifically for writing technical and product documentation. They are normally written and maintained in Markdown. The often include a navigation menu, search bar, clear headings, semantic document structure and clean typography.