Google has rolled out Avast anti-virus with Google Pack and it replaces Spyware Doctor which is the default anti-virus program shipped with Google Pack before.
Google Pack added the free version of the Avast antivirus, but only for the following languages: French, German, Italian, Czech, Spanish, Russian, Portuguese, and Polish. But for most of the languages, Avast antivirus is installed in English only.
Google pack is an all-in-one package of all the free software applications that Google selects and recommends for every computer user. This package includes software applications which are always free and are ready to use in just a few clicks.