The Developer Economics 2013 report—a sort of State of the Union on app development—is out and it's packed with helpful tidbits, both for armchair analysts and programmers trying to make some sense out of this crazy software world. One of the most interesting observations the survey showed is there is still demand for a third platform. And right now they're getting it in a surprising place: on Blackberries.
Above is the graph of OSes that developers list as their "main" platform. That is not to say that any of them code exclusively for them, just that it is the primary target for attention.