Features

The previous KDnuggets Poll asked: What type tools (commerical vs free/research) do you use for data mining and analysis.

The results, show a "bi-modal" distribution, with 45% using only or mostly commercial tools, and 41% percent using only or mostly free tools.

Here are full results of Commercial vs Free/Research Software poll, including comments.

A number of people have praised open-source and free R and Weka systems.