Windows XP still captures about half of the desktop operating system market with Mac and Linux far behind. Windows XP End Of Support Countdown Gadget can be installed on your desktop to count down the end of support in 2014. While Windows 7 has passed the 10-year-old Windows XP in U.S. usage share, it’s far behind XP worldwide. Microsoft: More than 90% of businesses are currently in progress with Windows 7 migrations, showing a 131% return on investment in just more than 12 months.”]