R is an open source programming language and software environment for statistical computing and graphics that is supported by the R Foundation. Developed by Ross Ihaka and Robert Gentleman
License: Open Source
R is a powerful programming language with extensive features for statistical analysis and data visualization, making it suitable for complex data tasks. PSPP, while user-friendly and simpler, is designed for basic statistical analysis and is more accessible to beginners, but lacks the depth and flexibility of R.