R's data.table package extends data.frame:

Readings in applied data science

Convert statistical analysis objects from R into tidy format

Mastering Shiny: a book

Read-only mirror of R source code from https://svn.r-project.org/R/, updated hourly. See the build instructions on the wiki page.

renv: Project environments for R.

R interface for Apache Spark

Building R packages

Easily install and load the tidymodels packages

Render bits of R code for sharing, e.g., on GitHub or StackOverflow.

Interactive Tutorials with R Markdown

Pipeable steps for feature engineering and data preprocessing to prepare for modeling

Classes and functions to create and summarize resampling objects

Pin, discover, and share resources

Excerpt from the Gapminder data, as an R data package and in plain text delimited form

Links to materials from tutorials and talks from useR 2019

Distribution of US baby names, 1880-2008

Tools for managing classroom organizations

Tools for Working with ...

Reduce the size of model objects saved to disk

A backend for functions taking tidyverse selections

Tidyverse developer day

R library for converting R models to PMML

Data and code from Applied Predictive Modeling (2013)

An opinionated example for implementing logging in Plumber APIs

An Implementation of the Grammar of Graphics in R6