A few months ago, inspired by the PYPL PopularitY of Programming Language, I compared Google trends data for the 3M of CAS software: Maxima, Maple, and Mathematica based searches of the form “<language> tutorial”. The result was that Maxima seems to be slowly increasing in popularity with about 20% of the interest in the 3M.
Today I saw another popularity metric: The TIOBE index. Using their methodology of Google trends data for the search string <language> + programming, I have these results for the proportion of searches among the 3M:
The MaximaList 