Mac users interested in Free gretl for mac generally download:
gretl is a cross-platform, free and open source software package for econometric analysis, written in the C programming language.
Gretl features :
- Easy, intuitive GUI
- Sophisticated (OLS, MLE, GMM, system estimation)
- Internationalized (10 languages besides English)
Requirements : GTK+ framework for Mac OS X 10.6.