Free download Avast Internet Security 6 for 9 months

Avast! Internet Security provides complete antivirus, anti-spyware, antispam, and firewall protection, complemented now by new Avast! Safe Zone™ technology. It creates an isolated virtual desktop, invisible to any possible attacker, where you can do your online shopping and banking securely.
Core Features

Antivirus and anti-spyware engine
Real-time anti-rootkit protection
Silent Firewall
Antispam
avast! WebRep
avast! CommunityIQ

Hi-Tech Features

Boot-time scanner
avast! SafeZone™
AutoSandbox
avast! Sandbox
Intelligent Scanner
Silent/Gaming Mode
avast! Real-time Shields – a team of 24/7 guards
Real-time scanning of opened/executed files.
Mail Shield
Web Shield
P2P Shield/IM Shield
Network Shield
Script Shield
Behavior Shield

Others

64-bit support
Heuristics engine
Code emulator
Automatic processing
Smart virus definition updates
Fast application of updates
Multi-threaded scanning optimization
Wake-up/Scheduled scanning
Command-line scanner

To get your license code,

First go the registration page from here and enter your details and click Absenden. Now you will receive the license key in your mail. Download the license key and extract the license file.

Now download the trial version of the software from here and install the Avast IS. During installation it will ask for license key, then you browse it to the location where you un-zipped the key file and finish the installation.