Google has replaced Firefox with its own Chrome as the default browser in the English version of Google Pack, the search company's application bundle for Windows.

Last week, Google dropped the "beta" label from Chrome, the browser it introduced three months ago, and issued the first production version for Windows XP and Vista.

Google Pack is a one-download collection of Google-made and third-party applications that includes Google Desktop, Google Earth, Picasa, Adobe Reader and Norton Security Scan.

Firefox remains on the list, but is no longer selected for download as part of Google Pack by default. Instead, the box beside it is left unchecked.

Non-English versions of Google Pack, however, continue to offer Firefox, including the German- and French-language editions. Chrome is available in localized versions for about 40 different languages, German and French among them.

Mozilla has had a lucrative relationship with Google over the years. In 2007, for example, 88 percent of Mozilla's revenues , to the tune of about $60(£37) million, came from its deal with Google. The search company pays Mozilla for assigning it as the default search engine in Firefox, and for click-throughs on ads placed on the ensuing search results pages.

Mozilla renewed the deal with Google in August when the two inked a three-year contract that ends in November 2011.