<a href="http:&#x2F;&#x2F;stackoverflow.com&#x2F;research&#x2F;developer-survey-2016#technology-desktop-operating-system" rel="nofollow">http:&#x2F;&#x2F;stackoverflow.com&#x2F;research&#x2F;developer-survey-2016#tech...</a> gives a good indication; over 50% of respondents use a version of Windows, vs 26.2% OSX. Mind you, that comparison is a bit skewed given how it counts Windows differently (broken up in versions) compared with OSX (which has been OSX for like ten years)