In the current war of OS's, we see a new OS every six month's interval, which is not very shocking either. We have seen some great team of developers, getting huge startups from big startup companies, and hence we are seeing more and more OS months after month. From MacOS to AndroidOS, the choice of OS is very large and never-ending. And, to heat up the competition, we saw earlier this year about plans of Ubuntu to move into mobile industry with their Ubuntu Touch OS. We have seen some of it's earlier build images running on Nexus range of devices and some other top-notch devices though they weren't stable enough.
If we told you that Android was the number one mobile OS worldwide, you shouldn't really be surprised by this point. By most metrics, the little green guy has overtaken the competition in just about every area, including sales, actual userbase, and ad impressions, as demonstrated here by Millenial Media's report. There are a couple surprises in the report, though.