Chart: Browser Usage Report Shows Chrome Is Kicking Butt

This doesn't make life easier for web designers, who must now ensure compatibility with five browsers.

Prevailing trends in the rising and falling fortunes of Web browsers continued through June, with Apple's iPad carving out a sizable slice of usage.

Google's Chrome continued its ascent of usage, rising from 12.5 percent in May to 13.1 percent in June, according to Net Applications' monthly tallies. Microsoft's Internet Explorer dropped about the same amount, from 54.3 percent to 53.7 percent.

Second-place Firefox, from the non-profit Mozilla organization, continued to tread water, staying at 21.7 percent. Apple's Safari ticked up from 7.3 percent to 7.5 percent, but Opera dropped from 2 percent to 1.7 percent.

Apple is a rising force in mobile browsing. Its iPad surpassed 1 percent of browser usage worldwide...

Sooner or later, a device manufacturer like HTC or Samsung will figure out how to build an Android tablet to compete with the iPad. And when that happens, developers will have yet another browser to test against.