Mozilla Firefox 3.1 Beta 3 Released | eWeek

Mozilla Firefox 3.1 Beta 3 Released

Mar 13, 2009
2 minute read
eWeek content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More

Mozilla is rolling out the 3.1 beta of its popular Firefox Web browser March 12. The new version of the open-source browser is intended for developers and testers for evaluation and feedback, but Firefox nonetheless claims that the beta release is stable.

While Microsoft Internet Explorer has a double-digit lead over Firefox with regard to market share, Firefox has still managed to dominate Apple Safari and Google Chrome in terms of percentage of users.

Based on the Gecko 1.9.1 rendering platform, Beta 3 boasts improvements to Web worker thread support, increased stability with the TraceMonkey JavaScript engine, native JSON support, and support for <video> and <audio> elements, W3C Geolocation API, JavaScript query selectors, CSS 2.1 and 3 properties, and SVG transforms.

Firefox has also improved its Private Browsing Mode, a feature designed for Firefox 3.1 beta and later. Once Private Browsing is turned on, Firefox no longer retains data such as visited pages, cookies, Web cache files, download list entries, or Form or Search Bar entries.

The Beta can be downloaded from this site.
Beta 4 is currently scheduled to roll out in mid-April, to be followed by a release candidate, and then the final release of what will be called Firefox 3.5.

First released in 2004, Firefox is currently the second-most popular Web browser in terms of market share.

Although it lags behind Microsoft’s Internet Explorer in terms of number of users, Firefox also holds a relatively dominant position, with regard to market share, over Apple’s Safari and Google Chrome.

eWeek Logo

eWeek has the latest technology news and analysis, buying guides, and product reviews for IT professionals and technology buyers. The site's focus is on innovative solutions and covering in-depth technical content. eWeek stays on the cutting edge of technology news and IT trends through interviews and expert analysis. Gain insight from top innovators and thought leaders in the fields of IT, business, enterprise software, startups, and more.

Property of TechnologyAdvice. © 2026 TechnologyAdvice. All Rights Reserved

Advertiser Disclosure: Some of the products that appear on this site are from companies from which TechnologyAdvice receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. TechnologyAdvice does not include all companies or all types of products available in the marketplace.