avast! Free Antivirus

avast! Free Antivirus represents the best free antivirus protection currently available on the market. This edition is FREE OF CHARGE for non-commercial & home use. Its features include:

    Anti-spyware built-in
    Web Shield
    Anti-rootkit built-in
    Automatic updates
    Strong self-protection
    Virus Chest
    Antivirus kernel
    System integration
    Simple User Interface
    Integrated Virus Cleaner
    Resident protection
    Support for 64-bit Windows
    P2P and IM Shields
    Internationalization
    Network Shield

Download here : 

http://www.filehippo.com/download_avast_antivirus/