Re:Number of active repositories in GitHub per language, per...
by cthulhujr on Friday November 11, 2016 @01:55PM
(#12933215)
Also language popularity based on this data might not be a fair conclusion. Some languages and environments do not lend themselves to OSS. For example, how many iOS app developers (using Swift) open source their app? Another is how many C# devs are using github as their repository over the various MS technologies.
So, there is not really an uptick in terms of percentage, the rise is more apparent in Java (and Javascript) case since they were more popular in the first place.
To see the relative shift in popularity, you would have to normalize the data against the total repos, I think.