A few other "command-line" tools for machine learning include: http://scikit-learn.org http://scikit-learn.org http://www.r-project.org http://www.r-project.o

A few other "command-line" tools for machine learning include: http://scikit-learn.org http://scikit-learn.org http://www.r-project.org http://www.r-project.org https://github.com/JohnLangford/vowpal_wabbit/wiki https://github.com/JohnLangford/vowpal_wabbit/wiki These all happen to be open source, but are probably not as pretty-looking as bigml's trees.