NumPy and SciPy are open-source add-on modules to Python that provide common mathematical and numerical routines in pre-compiled, fast functions.
License: Open Source
SciPy and NumPy are primarily used for numerical and scientific computing, while R is tailored for statistical analysis and data visualization. SciPy and NumPy excel in performance and mathematical capabilities, whereas R offers a rich set of tools for statistical modeling and data manipulation.