According to a recent IDC report highlighted by ZDNet, Linux is booming. At just 9.4 percent of the overall server market in terms of revenue in 2007, Linux has now climbed to 13.4 percent of the overall server market, with Unix at 7.7 percent and Windows at 36.5 percent.

"Linux went from 1.25 percent in May of 2007 to 2.02 percent in March of 2008. That is 61.6 percent increase in market share in nine months."

Firefox is on a decline. It may not be as steady as Internet Explorer's death spiral, and it certainly has not been going on for as long, but if the last three months are any indication, Firefox will never hit that 25 percent market share mark that looked all but certain just a few short months ago.

NetApplications is out with a couple of new metrics of market share for operating systems and browsers, and the news is good for open source. Topping their findings, Microsoft Windows' market share has dropped below 90 percent for the first time in its measurements. The share erosion is largely attributed to increased interest in the Mac platform, but Linux is cited as on the rise as well.

Linux's share of the desktop market grew to 1.13 percent, says Net Applications, making Linux the only OS to improve its position in May. Meanwhile, Linux server share dropped to 20.8 percent, but revenue share grew to 16.8 percent, says IDC, and UC Berkeley's Top500 survey shows Linux running on 91 percent of the world's 500 fastest supercomputers.

ABI Research is projecting that in 2009 Linux will represent 32 percent of netbook sales, far higher than the seven percent figure claimed by Microsoft, says a report. ABI also estimates that Linux will overtake Windows on netbooks by 2013, largely due to sales in less-developed countries, says the story.

According to Net Applications' data for browsers in April, Internet Explorer had 59.5 percent share, Firefox had 24.59 percent share, and Google Chrome had 6.73 percent share.

Novell beat Wall Street's estimates with a solid third quarter, but the real story is in its continued Linux growth. Net revenue rose to $245 million from $237 million in 2007, but Novell's third-quarter loss quadrupled to $15.1 million from $3.7 million in 2007.

In the North American market for POS (point of sales/service) terminals, Linux grew 32 percent year-over-year, according to figures released by IHL Group. The research firm reckons Linux accounted for $475 million of the $5.56 billion market, putting it third overall with an 8.5 percent market share.