tidyverse/ggplot2
A data visualization package based on the grammar of graphics.
Is the basis for truly interactive displays and dashboards in R. However, some measure of interactivity can be achieved with htmlwidgets bringing javascript libraries to R. These include, plotly, dygraphs, highcharter, and several others.
A data manipulation package that helps to solve the most common data manipulation problems.
Data.table provides a high-performance version of base R’s data.frame with syntax and feature enhancements for ease of use, convenience and programming speed.
Classification and Regression Training: Unified interface to ~150 ML algorithms in R.
For visualizing geospatial data with static maps and leaflet for interactive maps
RoughSets: Data Analysis Using Rough Set and Fuzzy Rough Set Theories.
And quanteda are the main packages for managing, analyzing, and visualizing textual data.
R