General

Persons (+ twitter)

{ggalluvial}: ggplot2 extension for alluvial plots
{ggalt}: Extra Coordinate Systems, Geoms, Statistical Transformations & Scales for 'ggplot2'
{ggbeeswarm}: Column scatter / beeswarm-style plots in ggplot2
{ggbump}: A geom for ggplot to create bump plots
{ggcal}: Generate simple calendar plots using ggplot2
{ggchicklet}: Create Chicklet (Rounded Segmented Column) Charts
{ggeconodist}: Create Diminutive Distribution Charts
{ggdag}: An R Package for visualizing and analyzing causal directed acyclic graphs
{ggExtra}: Add marginal histograms to ggplot2, and more ggplot2 enhancements
{gggibbous}: Moon charts, a pie chart alternative, for ggplot2
{gghalves}: Easy half-half geoms in ggplot2
{ggparliament}: Simple parliament plots using ggplot2
{ggpointdensity}: A Cross Between a Scatter Plot and a 2D Density Plot
{ggsoccer}: Plot soccer event data in R/ggplot2
{ggpubr}: 'ggplot2' Based Publication Ready Plots
{ggradar}: radar charts with ggplot2
{ggraph}: A grammar of graphics for relational data
{ggrepel}: Repel overlapping text labels away from each other
{ggridges}: Ridgeline plots in ggplot2
{ggsignif}: Easily add significance brackets to your ggplots
{ggthreed}: 3d geoms and stats for ggplot
{ggtree}: Visualization and annotation of phylogenetic trees
{ggwaffle}: Creating waffle charts in a ggplot friendly way
{ggweekly}: Easy, printable, custom calendars and week planners
{ggwordcloud}: A word cloud geom for ggplot2
{treemapify}: Draw treemaps in ggplot2
{waffle}: Make waffle (square pie) charts in R

{bbplot}: R package that helps create and export ggplot2 charts in the style used by the BBC News data team
{ggdark}: Dark mode for ggplot2 themes
{ggeasy}: Easy Access to 'ggplot2' Commands
{ggfittext}: ggplot2 geoms to fit text into boxes
{gghighlight}: Highlight points and lines in ggplot2
{gglaplot}: Makes graphics in the GLA style using ggplot2
{ggnewscale}: Multiple Fill and Color Scales in 'ggplot2'
{ggpomological}: Pomological plot theme for ggplot2
{ggrough}: Convert ggplot2 chart to roughjs
{ggsci}: Scientific journal and sci-fi themed color palettes for ggplot2
{ggtech}: ggplot2 tech themes, scales, and geoms
{ggtext}: Improved text rendering support for ggplot2
{ggtextures}: Drawing textured rectangles and bars with ggplot
{ggthemes}: Additional themes, scales, and geoms for ggplot2
{ggthemr}: Themes for ggplot2
{hrbrthemes}: Opinionated, typographic-centric ggplot2 themes and theme components
{paletteer}: Collection of most color palettes in a single R package
{tvthemes}: ggplot2 themes and palettes based on your favorite TV shows
{urbnthemes}: Urban Institute's ggplot2 theme and tools

{ggcounty}: Generate ggplot2 geom_map county maps
{ggmap}: A package for plotting maps in R with ggplot2
{ggsn}: R package to add north symbols and scale bars to maps created with ggplot or ggmap
{ggspatial}: Enhancing spatial visualization in ggplot2
{urbnmapr}: US state and county maps with Alaska and Hawaii

{GGally}: R package that extends ggplot2
{ggeffects}: Tidy Data Frames of Marginal Effects for ggplot2
{ggfortify}: Define fortify and autoplot functions to allow ggplot2 to handle some popular R packages
{ggRandomForest}: Graphical analysis of random forests with the randomForestSRC, randomForest and ggplot2 packages
{ggstatsplot}: Enhancing 'ggplot2' plots with statistical analysis
{tidybayes}: Bayesian analysis + tidy data + geoms