The latest version of Mozilla's Firefox web browser includes features to allow increasingly powerful web applications.
According to Mozilla, Firefox 3.5 is more than twice as fast as version 3 and 10 times faster than version 2.
Users will be able to view video in Web pages without needing additional plug-in software and view more of Web pages thanks to a streamlined browser window.
Other features include a private mode for more secure browsing, pop-up blocking, tab browsing, offline storage for applications, and downloadable fonts.
Mozilla has also announced beta versions of Firefox for Nokia's Maemo tablet PC and Windows Mobile phones and a compressed version for other mobile devices.
The compressed version of Firefox Mobile runs from any CDROM, DVD, USB drive, or hard drive without installation.
The rate of innovation by Mozilla, Google, Apple and others is being hailed as the next round of browser wars, last seen when Microsoft took on Netscape a decade ago.
Despite some innovation in Micosoft's Internet Explorer 8 released in March, it is lagging behind Firefox and other competitors in support for new standards such as HTML5.