JASP - JASP, a low fat alternative to SPSS, a delicious alternative to R.
BlueSky Statistics - BlueSky Statistics is a fully featured statistics application and development framework built on...
RStudio - RStudio™ is a new integrated development environment (IDE) for R.
Statista - The Statistics Portal for Market Data, Market Research and Market Studies
ggraptR - ggraptR is an open source R package providing a GUI for visualization.
PSPP - PSPP is a free software application for analysis of sampled data.