The frenzy surrounding the annual software poll KDnuggets is finally over. The results are available at:
Data Mining / Analytic Software Tools (May 2007)
A number of statistical issues have been raised regarding this particular survey, but I will highlight only one here: The survey now includes separate counts for votes cast by people who voted for a single item, and those who voted for multiple items. Partially, this is in response to "get out the vote" efforts made by some vendors.
Anyway, some interesting highlights:
1. Free tools made a good showing. In the lead among free tools: Yale (103 votes).
2. "Your Own Code" (61 votes) did respectably well.
3. Despite not having data mining-specific components, MATLAB (30 votes), which is my favorite tool, was more popular than a number of well-known commercial data mining tools.