1.小红伞
http://www.free-av.com/
2.avast
http://www.avast.com/index_cns.html
3.avg
http://free.avg.com/
4. pctools的杀毒软件和防火墙 防火墙严重推荐
http://www.pctools.com/cn/firewall/ 防火墙
http://www.pctools.com/cn/spyware-doctor-antivirus/ 杀毒防间谍
5.comodo 安全套装 杀毒和防火墙
http://www.comodo.com/home/download/download.php?prod=cis
6.ClamWin
地址：http://www.clamwin.com/
7.大蜘蛛绿色版
http://www.freedrweb.com/
8.bitdefender 免费版
http://www.bitdefender.com/PRODUCT-14-en--BitDefender-Free-Edition.html
9.mse更新
http://www.microsoft.com/SECURITY_ESSENTIALS/
10.FortiClient的安全套装
https://shop.fortinet.com/files/FortiClientSetup_4.1.0.exe
11.雨过天晴电脑保护系统
http://www.njanyue.com/download_1.php | 
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