VIPRE Antivirus is the light-weight and highly effective antivirus  program that does not slow down your PC.  Using next-generation  technology, VIPRE protects your computer from all types of malware  threats including viruses, adware, spyware, worms, rootkits, and more.
Features
High performance threat protection with low impact on system resources
User tell us the biggest frustration with antivirus programs is  bloat and high resource usage. VIPRE Antivirus has been completely  written from scratch to run seamlessly without impairing system  performance.  Users report amazing results after replacing their  existing antivirus with VIPRE - it's like they have a new system!
All-new technology delivers a powerpful antivirus and antispyware engine
At VIPRE's core is an antivirus and antispyware engine that merges  the detection of all types of malware into a single efficient and  powerful system. The new technology was developed exclusively by GFI,  without building on older generation antivirus engines. VIPRE uses  next-generation technologies making it the future of antivirus programs.
Advanced anti-rootkit technology
VIPRE's all-new anti-rootkit technology finds and disables  malicious hidden processes, threats, modules, services, files, Alternate  Data Streams (ADS), or registry keys on a user's system.
Removing rootkits is supplemented by VIPRE's FirstScan™ which runs at  the system's boot time. FirstScan bypasses the Windows operating  system, to directly scan certain locations of the hard drive for  malware, removing infections where found. 			
Real-time monitoring with Active Protection™
VIPRE's Active Protection delivers real time monitoring and  protection against known and unknown malware threats. Active Protection  works inside the Windows kernel (the core of the operating system),  watching for malware and stopping it before it has a chance to execute  on a user's system.
Full protection against email-borne threats
VIPRE Antivirus includes comprehensive protection against email  viruses, with direct support for Outlook, Outlook Express and Windows  Mail; and support for any email program that uses POP3 and SMTP  (Thunderbird, IncrediMail, Eudora, etc.).
System Requirements:
- Windows Server 2008 (32/64-bit)
- Windows 7 (32/64-bit),
- Windows Vista (All flavors) (32/64-bit)
- Windows Server 2003 (32/64-bit)
- Windows XP (Home, Pro, Media Center, Tablet) (32/64-bit)
- At Least 512MB Memory (RAM)
- At Least 150MB Disk Space Available
- High Speed Internet (Recommended)
All Internet browsers are supported for Active Protection,  scanning, and removal of threats. Internet Explorer 6 or higher must be  installed for VIPRE to function properly; however IE does not have to be  your default browser.
Supported Operating Systems:
Windows 2000 SP4 RU1, Windows XP and higher (32 and 64-bit), Windows Vista and higher (32 and 64-bit)
Supported Email Applications:
- Outlook 2000 and newer
- Outlook Express 5.0 and newer
- Windows Mail for Vista
- POP3 and SMTP Clients (Thunderbird, Incredimail, Eudora, etc.)
- SSL is only supported in Outlook and Outlook Express.
I remember GFI Software  conduct a giveaway  when   they  launched  Viper antivirus ver. 4.Vipre Antivirus is very  rare  to  find and thanks to   Toms hardware to  organize the giveaway  .
To get  a License 
 
1. Go to  the Link .
2. Enter your Email  address and the Coupon code "
motherboard."
and Click  on
 Submit button  .
3. You  will receive a conformation email  , click on  the conformation email .Soon you  will receive your 
VIPRE registration Key.