A good one (PDF, EPUB export included) but the project is halted and moved to a proprietary model. https://github.com/GitbookIO/gitbook What is the best fork to use?
Looks nice and neat (you need a lot of JS to view doc, less nice) but cannot find a simple way to generate PDF or EPUB.
Simple and minimal, using Python very nice. But still not default PDF export. There is a pandoc module (unmaintained?) https://github.com/jgrassler/mkdocs-pandoc
https://github.com/docsifyjs/docsify
Looks nice (but again too much JS to view it?). Generating static content seems more complex.
Not sure I understand the concept...
It seems pretty good for API documentation.
https://github.com/lord/slate
Looks good but mainly focus on code readability. It seems useful for documenting code.