Tools to make an R developer's life easier
Render bits of R code for sharing, e.g., on GitHub or StackOverflow
RStudio add-in to make plots interactively with ggplot2
Organize your project into a research website
Create Blogs and Websites with R Markdown
LaTeX Journal Article Templates for R Markdown
Psychometric meta-analysis toolkit
Generate static html documentation for an R package
httr: a friendly http package for R
Building R packages
A great intro dataset for data exploration & visualization
Use RMarkdown to generate PDF Conference Posters via HTML
An open-source textbook written at the college level