Firefox 3.0 went live Tuesday to big fanfare -- and an early snag with Mozilla's servers -- while behind the scenes the open source browser continues to claw its way up the market-share charts.

View a roundup of all the intriguing new products, including Firefox 3.0, introduced the week of June 16, 2008.

Statistics gathered in the first six months of this year at Network World's Web site show the use of Firefox at 36%, which compares with 28% in the first six months of 2007 (a 29% increase). In June 2005, 19% of surfers to NetworkWorld.com were using Firefox 1.0, then a 7-month-old newcomer to the Web.

Firefox's upward mobility has been at the expense of Microsoft's Internet Explorer, which was used by 66% of Network World readers in the first six months of 2007 but only 53% today (a decline of 20%).

Firefox wasn't the only mover: Safari went from 3% in 2007 to 5% in 2008 -- a whopping 67% gain but still not enough market share to battle the big boys.

With Network World catering to a high-tech readership, it is clear, at least in this case, that more savvy Web users are turning to Firefox.

Numbers gathered in a recent report by Forrester Research also show that in the past 12 months corporate use of Firefox has doubled, going from 9% to 18%.

But the Forrester report was quick to point out that Firefox is not significantly cracking the intranet applications market where many older applications were written to take advantage of Active X controls in IE.

Click to see: Graph of Firefox 3.0 Beta downloads

But as developers move to more standards-based tools, users are likely to find that the need for a corporate standard in terms of browsers could go away.

"It seems when you go to any developers conference these days the machines are Macs and the browser [the developers] are working in is Firefox," says Brian Kotlyar, an associate analyst at the Yankee Group. "Perhaps some of the legacy intranet applications are not there yet, but the future is applications that work in the browser and the apps are going to have to work on every browser."

That has not been the case and is one large reason why Microsoft had corporate users locked in and didn't feel compelled to upgrade Internet Explorer between 2001 (Version 6) and 2007 (Version 7). Version 8 has a Beta 2 slated for August that features many enhancements for IT including easier integration with operating system images and applications compatibility testing tools.