The first half of October 2011 has seen Windows 7 surpass Windows XP to become the number one operating system worldwide, with a market share of just over 40% (up from 39.04% in September), according to StatCounter.

Despite becoming dethroned, the immortal OS, Windows XP, is still going strong, having a 38.62% share while way behind, on third place, there's Windows Vista with just 11.18%. The fourth spot in the OS charts is taken by Apple's Mac OS X with 7.3%, while on fifth we find iOS with 1.1%.

Bottom line is that, two years after its retail release, Windows 7 is king, and will be for a few good years since Windows 8 is still pretty far off, Tech Connect Magazine reported.