What Tools are Developers Using?

The Developer's Toolkit is an infographic that shows the top tools being used by developers. The information based in this infographic is based on a survey of 500 developers around the world that was conducted by BestVendor. More importantly, this survey targeted developers in companies with less than 100 people.

In reviewing these statistics, I see a few things that seem questionable. Regardless, it is always interesting to see numbers. Do you think the rankings are accurate? Do you see things that seem to be missing?