PSPP is a free software application for analysis of sampled data, intended as a free alternative for IBM SPSS Statistics.
License: Open Source
RStudio is a powerful integrated development environment for R, offering extensive statistical analysis and visualization capabilities, making it suitable for advanced users. PSPP, on the other hand, is a free alternative to SPSS that is user-friendly and suitable for basic statistical analysis, but lacks the depth and flexibility of RStudio.