1, Tencent housekeeper
TencentPCManager/ Manager (formerly known as QQ Computer Manager) is a free security software launched by Tencent. It has the functions of cloud Trojan horse killing, system acceleration, vulnerability repair, real-time protection, network speed protection, computer clinic, health assistant, desktop finishing, document protection and so on.
2. Baidu Guardian
Baidu Guardian is a simple and reliable system tool software produced by Baidu Company, which integrates three functions of computer acceleration, system cleaning and security maintenance to provide users with high-quality computer and network security services.
Baidu officially launched the version of Baidu Guardian 1.0, with the slogan "light, fast, intelligent and clean". In addition to the three main functions of "computer acceleration", "system cleaning" and "Trojan horse killing", it also provides some small functions such as "high-risk vulnerability repair", "software housekeeper" and "boot prompt".
3. Kaspersky
Kaspersky anti-virus software is one of the most advanced anti-virus software in the world. Headquartered in Moscow, Russia, Kaspersky Lab. It is an internationally renowned information security leader, and its founder is Russian Eugene Kaspersky.
The company provides anti-virus, anti-hacker and anti-spam products for individual users and corporate networks. After fourteen years of fighting against computer viruses, Kaspersky gained unique knowledge and technology, making Kaspersky a technical leader and virus defense expert. The company's flagship product, the famous Kaspersky security software, is mainly aimed at home and individual users, which can completely protect users' computers from all kinds of Internet threats.
4. Kingsoft Internet Security
Kingsoft Internet Security is China's antivirus software. From the initial version released by 1999 to the development and distribution by Jinshan Company on 20 10, and then to the merger of the security department of Jinshan Company and Koniu on 20 10, it will be fully managed by the merged new company Jinshan Network.
Kingsoft Internet Security combines heuristic search, code analysis, virtual machine virus detection and other technologies. Mature and reliable anti-virus technology and rich experience proved in the industry make it reach the world advanced level in killing virus types, killing virus speed and preventing and controlling unknown viruses. At the same time, Kingsoft Internet Security has many advanced functions such as real-time monitoring of virus firewall, compressing files to kill viruses, and killing mail viruses.
5. Red umbrella
AviraAntiVirus is a set of antivirus software developed by Avira company in Germany. In addition to the commercial version, Avira also has a free personal version. Its interface is not so gorgeous, and there are no useless superfluous items.
It is a well-known free antivirus software with more than 70 million users. It has rewritten many people's idea that "free antivirus software is bad", and its performance is not inferior to that of well-known paid antivirus software, even higher than that of some commercial antivirus software, so it has become the first choice for many users to choose antivirus software.