Google Pack is a collection of Google-created and third-party apps and also includes Adobe Reader, Picasa and Norton Security Scan. English users who would prefer to browse the web with Firefox are still able to download Firefox as part of the pack, although they will have to check the box next to app before downloading.
Non-English language versions of the Google Pack promote Firefox, even though Chrome is available in a number of other languages including French and German.
The move will come as a blow to Mozilla, which in 2007 saw 88 percent of its revenues, or around $60m (£39.9m), generated from its deal with Google. The search company pays Mozilla for assigning it as the default search engine in Firefox, and for clickthroughs on ads placed on the ensuing search results pages.
The deal between the pair was renewed in August with a three-year contract tying the two companies together until November 2011.