Here are some recommendations for R packages
- ggplot (grammar of graphics)
- dplyr (handling data frames, pipe functions)
- vote (vote tally for various electoral systems)
- wbstats (access to the World Bank data base)
- OECD (access to the OECD data base)
- giscoR (European geo data)
- Eurostat (access to Eurostat data)
- rdbnomics (R access to hundreds of millions data series from DBnomics API)