Last week Opera released an Alpha version of the Opera 10 web browser. You can download Opera 10 from the company's site in versions for Windows, Mac OS X and Linux, and here's a reason why you may wish to do so: unlike Internet Explorer 8.0, Mozilla Firefox 3.0, Safari and Google Chrome, Opera 10 absolutely flies through the stringent Acid3 web standards test.
Opera 10 also contains the Norwegian browser maker's newest rendering engine -- dubbed Presto 2.2 -- that the company plans to use as the foundation for all future builds of its desktop and mobile products.
Opera claimed that the new engine boosts rendering speeds by up to 30 percent over its predecessor, Presto 2.1, which debuted last June as part of Opera 9.5. Other additions include an auto-update tool and a spell-checker that works as users type in the browser window.
But Opera also touted its perfect Acid3 score last week.
"Opera has fine-tuned its standards support and, as a result, Opera 10 alpha achieves an Acid3 100/100 Test score," the company said in a statement on Thursday.
Earlier this year, Opera and the WebKit project, the open-source initiative that produces the engine that powers both Apple's Safari and Google's Chrome, duked it out over Acid3 bragging rights.
On March 26, Opera claimed that it had created a "reference build0" a version used internally for testing and development, of its browser that scored 100 on Acid3, a test suite produced by the Web Standards Project that checks how closely a browser follows certain standards, particularly specifications for Web 2.0 applications.
Later that same day, WebKit developers countered with similar claims, and backed them up with in-progress builds to prove them. More recently, WebKit programmers said that after more work, their engine was "the first browser to fully pass Acid3" by not only scoring a perfect 100, but also meeting Acid3's "smooth animation" requirement.