Software

The free data mining software tool Yale (now named RapidMiner) is heavily based on Weka. I would classify it as WEKA with a nifty interface, even the code tree is quite similar at first glance. This does not seem to be widely known. On a more positive note, this means that WEKA is on first place in usage (103+48 = 151 :-) among free tools in

KDnuggets 2007 Poll: Data Mining / Analytic Software Tools

This should be accounted for in next years poll.

Dr. Alexander K. Seewald
alexATseewaldDOTat