Dr.Web(大蜘蛛)
道特韦伯（北京）信息技术有限公司，总部位于中国北京，在华北，华南地区均设立分支机构。公司位于中关村高新技术开发区-----上地硅谷亮城，是一家高起点，高技术，年轻而又充满活力的信息安全企业。
PC Tools
PC Tools publishes highly trusted, award-winning PC software, including Spyware Doctor, Registry Mechanic, Free AntiVirus, Firewall Plus and Spam Monitor, which protect the privacy and security of Windows? PC users.
Avira(小红伞)
Windows and Linux anti virus, firewall, anti spam, recovery solutions against malware infection - Avira AntiVir.
Avast
The main interest of ALWIL software is in developing protection against computer malware, which is spread mainly on the internet and via other data media. antivirus software is based on in-house developed antivirus technology.
ZoneAlarm
Award winning antivirus, internet firewall and computer security software by ZoneAlarm, including virus scan and anti-spyware protection for Windows Vista and XP.
冠群金辰软件公司
KILL安全产品包括：KILL终端安全和KILL网关安全两大系列，以及KILL防火墙，入侵检测，漏洞扫描等众多安全产品。KILL终端产品有KILL杀毒软件和KSMS终端安全管理系统，KILL过滤网关屡获殊荣并居安全网关市场的领导地位。
Virus Bulletin
Independent malware journal and website with advice, reviews and tutorials.