Google’s Chrome browser is continuing to grow in popularity. According to StatCounter, a website analytics company, Chrome is now used by a fifth of Internet users worldwide, taking 20.7 percent of the global browser market in June, up from just 2.8 percent in June 2009. In the same two-year period, Microsoft’s Internet Explorer share has fallen from 59 to 44 percent, and Mozilla’s Firefox also dropped slightly, from 30 to 28 percent.

That’s an impressive result for Google’s WebKit-based browser, which was only released in December 2008. One of the reasons Chrome originally gained so much traction, apart from its novelty, was its clean design, blisteringly fast V8 JavaScript engine and support for newer web standards, which, when Chrome was released, meant it ran complex web applications, like Gmail and Google Docs, much faster than the crop of browsers that existed at the time. Its release forced the other browsers vendors to catch up, even Microsoft, sparking a new round of browser wars. This resulted in an across-the-board improvement of browsers that’s not only good news for users, it’s good for Google, too, as the company wants to make using its web apps feel as close to a desktop experience as possible.

Note: Browser market share statistics should always be viewed with a healthy slice of skepticism, as they can be skewed depending on where the data is collected from. StatCounter Global Stats are based on aggregate data collected on a sample exceeding 15 billion page views per month (4 billion from the U.S.) from the StatCounter network of more than three million websites, but it should be pointed out that Net Applications, for example, reports Chrome’s marketshare at 12.5 percent in May.