Here is a promotional offer of Avira Premium Security Suite 10 that is available for download with six months free license key.
Avira Premium Security Suite includes anti-virus, anti-spam, anti-spyware, anti-phishing proactive, anti-rootkit, anti-drive-by, anti-bot, webguard protection with some other features like:
RescueSystem create a bootable rescue CD
QuickRemoval eliminate viruses at the push of a button
NetbookSupport for laptops with low resolution
GameMode uninterrupted game play
FireWall protection against hackers
ParentalControl block websites unsuitable [...]
Symantec has released the final Norton 360 ver. 5 security application which was living in beta since 3 months.
Norton 360 ver. 5 security suite is available for 90 days trial, so either you have a plan to spend $80 for 1 year 1 PC protection through Norton 360 ver. 5 or not even then you can grab free Norton 360 ver. 5 via link below, install on your PC to protect it against threats.
Download Norton 360 v5 90 Days Trial
Kaspersky has released Kaspersky Internet Security 2011 beta and Anti-virus 2011 build 184.108.40.206 beta. Both the security applications includes many enhancements, new features and totally new graphical user interface.
These beta versions of Kaspersky Internet Security 2011 and Anti-virus 2011 are available with 30 days free trial, and this is just recommended for developers or testers to try these latest Kaspersky security suite beta applications as these are buggy right now and could not work properly for general users.
Download Kaspersky Internet Security 2011 & Anti-virus 2011 Beta