You can break it down by classes of development (web, mobile, enterprise, embedded) as well as weighting (Spectrum, trending, jobs, open, custom). Spectrum's index (even though it's from 2014 and includes things TIOBE doesn't like SQL) isn't so very different from TIOBE's index.
http://spectrum.ieee.org/static/interactive-the-top-programm...
You can break it down by classes of development (web, mobile, enterprise, embedded) as well as weighting (Spectrum, trending, jobs, open, custom). Spectrum's index (even though it's from 2014 and includes things TIOBE doesn't like SQL) isn't so very different from TIOBE's index.