Android (operating system) and rival Linux mobile operating systems that were in development. These established players were skeptical: Nokia was quoted as saying "we don't see this as a threat," and a member of Microsoft's Windows Mobile team stated "I don't understand the impact that they are going to have." Since then Android has grown to become the most widely used smartphone operating system and "one of the fastest mobile experiences available". Reviewers have highlighted the open-source nature of the operating system as one of its defining strengths, allowing companies such as Nokia (Nokia X family), Amazon (Kindle Fire), Barnes & Noble (Nook),
Usage share of operating systems developer survey provides no detail about particular versions of Windows. The desktop operating system share among those identifying as Professional Developers was: In June 2016, Microsoft claimed Windows 10 had half the market share, then in the US (and UK), of all Windows installations (only), as quoted by BetaNews: As of February 2017, Microsoft's trend page has Windows 10 (for global data) at 47% (for "PC and tablet: All users"), more than any other Windows version, and at 56% (for "PC and tablet: Gamers"). Note, while data seems contradictory and limited, all data is; Microsoft may have good access to