R

R is the premier open-source environment for high-level statistical computing and professional data visualization.

Built on the foundations of the S language from Bell Labs, R serves as the backbone for modern data science and academic research. Its ecosystem centers on CRAN (a repository of 20,000+ specialized packages) and the Tidyverse, which streamlines data cleaning and analysis. Tools like ggplot2 produce publication-quality graphics, while libraries like Shiny allow users to build interactive web applications directly from their scripts. It remains the top choice for rigorous statistical modeling, bioinformatics, and financial forecasting.

https://www.r-project.org/