dplyr: A grammar of data manipulation

Machine Learning in R

RStan, the R interface to Stan

mlr3: Machine Learning in R - next generation

Data table backend for dplyr

R package for community ecologists: popular ordination methods, ecological null models & diversity analysis

Features and tweaks to R that I and others would love to see - feel free to add yours!

Extra learners for use in mlr3.

Development version of vioplot R package (CRAN maintainer)

BiocompR is a R package build upon ggplot2 to improve commonly used plots dedicated to data comparison, dataset exploration and, ultimately provides users with versatile and customizable graphics.