R Markdown
The goal of the rmarkdown package is to provide output formats and tools for R users to create dynamic analysis documents that combine code, rendered output (such as figures), and prose.
Distill
The goal of the Distill package is to provide an output format for R Markdown optimized for online scientific and technical communication.
Blogdown
The goal of the blogdown package is to provide a powerful and infinitely customizable website output format for R Markdown.