After a not so impressive performance from Windows Vista, the new Microsoft OS, Windows 7 seems to be doing quite well. So now when you have the Windows 7 OS, you may be looking for an antivirus program. Here is a list of top 3 antivirus software’s that are free to use and compatible with Microsoft Windows 7 operating system.

Today almost every computer is connected to the internet. Users surf the web, they search, chat and even download stuffs. The Internet also opens the door to many viruses, spyware and malware. Hence it becomes important to install antivirus software on your Desktops or Laptops to keep you system protected from such online threats.

Well there are many free antivirus software’s available for download, but I find the 3 listed below among the best. The antivirus software are free to use, you can even purchase an upgrade for extra protection. The antivirus software listed below works on Windows XP, Windows vista and Windows 7.

AVG Anti-Virus Free Edition 2011

AVG is one of the most trusted free antivirus software and also one of the most downloaded.  With the free AVG anti-virus edition your system gets a real-time time protection. The AVG antivirus also monitors activities on social networks.

AVG Anti Virus Free Edition 2011
AVG Anti Virus Free Edition 2011

AVG Antivirus Free Edition 2011 is compatible with Windows 7 and stays up to date by automatically updating itself. This antivirus software uses low resources hence does not affect the overall performance of your system.

AVG Website | Download AVG Free Edition

Microsoft Security Essentials

This is a free antivirus protection software that you can download provided you have genuine licensed Windows OS.  This Microsoft software is completely free and easy to use. It will auto update itself and keep your system protected at all times.

Microsoft Security Essentials free antivirus
Microsoft Security Essentials free antivirus

Microsoft Security Essentials has got good reviews and would be the best option or a default option to be used with Windows 7.  Before you install this Microsoft antivirus you should un-install any exiting antivirus program (if any).

Download Microsoft Security Essential Website

Free Avast Antivirus

Now this is one of my favourite, the Avast antivirus is simple to use and is even better than the paid products.  The free Avast edition comes with antivirus and anti-spyware protection. Avast also claims to be the fastest online protection available.

Avast Anti-Virus Speed Test Results
Avast Anti-Virus Speed Test Results

Speed test Source : Anti-Virus Comparative report, February 2011

Free Avast Anti-Virus Software
Free Avast Anti-Virus Software

This antivirus software is easy to install and auto-updates itself.  The pro antivirus and internet security edition provide a great protection level, however the free Avast is good enough for normal home usage.

Download Avast Free

So if you are still running your Windows 7 OS without any protection check out the free antivirus software listed above and get protected for free.

By Rajeev Rana

Founder and Chief Editor -