The Mozilla Foundation has released a new beta version of its forthcoming Firefox 3.1 web browser. As well as improvements in the Gecko engine used to display webpages, the new version also allows you to drag and drop tabs from one browser window to another - just like the facility in Google's recently-released Chrome beta.

The beta version can be downloaded from here, but beware: installing it will overwrite your current version of Firefox, so it's best left to a spare, or virtual, PC for the moment. More details on the release can be found here.