A open-source (GPL-3) R package to facilitate writing books and long-form articles/reports with R Markdown. Features include:

• Generate printer-ready books and ebooks from R Markdown documents
• A markup language easier to learn than LaTeX, and to write elements such as section headers, lists, quotes, figures, tables, and citations
• Multiple choices of output formats: PDF, LaTeX, HTML, EPUB, and Word.
• Possibility of including dynamic graphics and interactive applications (HTML widgets and Shiny apps)
• Support for languages other than R, including C/C++, Python, and SQL, etc.
• LaTeX equations, theorems, and proofs work for all output formats
• Can be published to GitHub, bookdown.org, and any web servers
• Integrated with the RStudio IDE
• One-click publishing to https://bookdown.org

Full documentation at https://bookdown.org/yihui/bookdown, and see "Get Started" at https://bookdown.org to know how to get started with writing a book. You are welcome to send us feedback using Github issues or ask questions on StackOverflow with the bookdown tag.