COS (operating system) the smart phone market when COS was introduced and Apple most of the remaining market share. COS looks very similar to Android and has its own Application Portal much like Android Market and iOS App Store. The Linux kernel is GPLv2 and the COS framework is closed source and licensed by the originators. The COS Core operating system is based on the Linux kernel and can be seen as a Linux distribution, in the same way as the Android operating system. According to the official statements, COS supports HTML5 based applications and Java based applications. COS (operating system) COS is
Usage share of operating systems Online usage of Linux kernel derivatives (Google systems + GNU/Linux) exceeds that of Windows. This has been true since some time between January and April 2016, according to W3Counter and StatCounter. But even before that, the figure for all Unix-like OSes, including those from Apple, was higher than that for Windows. Windows is still the dominant desktop OS, but the dominance varies by regions, has gradually lost market share to other desktop operating systems (not just to mobile) with the slide very noticeable in the US, where macOS has more than tripled, from yearly 2009 to 2017, with Windows there