Download 10 Best Antivirus 2011

1.Symantec Norton Antivirus 2011

Symantec’s Norton Antivirus has a smooth interface, including a map that illustrates global cybercrime activity.it was a close race overall, but Symantec Norton Antivirus 2011 took home the top prize with its excellent malware detection, blocking , and cleanup. BitDefender Antivirus pro 2011 and G-Data Antivirus 2011 round out the top three.

You can download it for free here.... Download on Cnet.com..

2.BitDeffender Antivirus pro 2011

Bitdefender is good at detecting malware and disinfecting PCs, but had some difficulty in blocking brand-new malware. BitDefender takes a little longer to install than most of the other antivirus products we looked at, as the process includes not just installation but various setup options as well.

Download For  Free Here..

3.Kaspersky Anti-virus 2011

Kaspersky Anti-virus 2011 blocks new malware attacks and is easy to use, but it slows system performance excessively. Kaspersky was one of the better-performance programs at running manually initiated on-demand scans.It scanned 4.5GB of files in 1 minute, 43 seconds, trailing the fastest performance by only 13 seconds and clearly surpassing the average scan time of 2 minutes, 21 seconds.

4.G-Data Antivirus 2011

G-Data Antivirus 2011 is solid package, with strong malware detection, blocking and removal capabilities. The main interface clearly indicates your PC’s protection status, through it does lack the “master’ everything-is-protected-and-configured-correctly status indicator that’s present in many antivirus products.
Download via Brothersoft.com

5 .Trend Micro titanium Antivirus+ 2011

Trend Micro provides solid single protection: advanced users, however, may find its lack of customizability frustrating. it has moderate impact on Pc performance in our tests, finishing right around average for the products we looked at, Scan speeds were mixed bags.
Download For 32 Bit
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All are Chinese Version, you can change it.
1.Install and then select "Activate trial version" in the Chinese language or a second button (please see picture)

Choose Second Button

2. Open Window Titanium Trend Micro Internet Security 2011, and right-click the Trend Micro Internet Security 2011 Titanium tray icon in the notification area, then select the bottom menu to turn off its tray icon: Select Fit Your Figure :

Choose The lowest button

3. Please go to forler Ctonguerogram FilesTrend MicroUniClientUiFrmwrk, and open the file using notepad 
    UIProfile.cfg 

4. Edit UIProfile.cfg with notepad, find the letter "ZH-CN" and change it to "EN-US" then save. Please see 
    picture for more details.

5. Restart the computer, then run the Trend Micro Titanium Internet Security 2011, and you'll get a Titanium Trend Micro Internet Security 2011 English speaking with full license for 1 year.

6.Avast pro Antivirus pro 2011

It is easily to use and has the fastest scanning speed. But average performance to detecting and blocking malware.

7.Avira Antivirus premium 2011

Avira put up decent scores in detection and blocking. But its interface needs a makeover, and it may slow your PC. It has good performance at malware detection and blocking. But it has seriously slows system performance.

8.Panda Antivirus premium 2011

It is an effective defender, through it’s one of the slower antivirus products we tested.
It has to effectively detects, blocks and removes malware. It had some of the slowest scanning speeds in our tests.

9.Eset NoD32 Antivirus 4

Eset NoD32 Antivirus 4 is fast, its malware detection and cleanup capabilities are lacking: blocking was average. it blocks new malware reasonably well; scans fast. It has trouble detecting known malware.

10.GIFI Vipre Antivirus 4

It offers a fast application Its designs are cluttered. It does fast scans and has little impact on PC performance. But it is ineffective at blocking new malware.