Despite of widespread critics among certain groups of end-users, Microsoft Windows Vista operating system (OS) captured additional part of the market in October, whereas other operating systems from Microsoft reduced their installed base. At the same time, platforms from Apple reduced the shares of the market they command. In September the share of Windows Vista-based personal computers used to browse the Internet was close to 8%, 7.91% to be precise, up insignificantly, according to data collected by Net Applications, a provider of Web tools. The shares of Windows 2000 and Windows XP operating systems decreased to 3.16% and 79.07%. The share of systems based on Mac OS decreased to 6.55% in October, down from 6.61% a month before. Other operating systems, namely outdated Windows versions, Linux OSes and so on, which have been losing market share for many months now, are now used in 3.31% of devices that are browsing online.