The best replacement for ggplot is lattice.

The best alternatives to ggplot are rated as following:
★★★★★  lattice
★★  bokeh

Your alternative for ggplot is not listed? Suggest!
Speaking about ggplot, one probably shouldn't forget about shiny.

Other search terms related to ggplot and their ratings are:
★★★★★ shiny
You have in mind a companion for ggplot and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ggplot in all years. Click on graph for more.
ggplot
lattice
bokeh