Antivirus software, also known as anti-malware, is a computer program used to prevent, detect, and remove malware.
ClamAV (antivirus) is a free software, cross-platform antimalware toolkit able to detect many types of malware, including viruses. It was developed for Unix and has third party versions available for AIX, BSD, HP-UX, Linux, macOS, OpenVMS, OSF (Tru64), Solaris and Haiku. As of version 0.97.5, ClamAV builds and runs on Microsoft Windows. Both ClamAV and its updates are made available free of charge. One of its main uses is on mail servers as a server-side email virus scanner.
ESET NOD32 Antivirus, commonly known as NOD32, is an antivirus software package made by the Slovak company ESET. ESET NOD32 Antivirus is sold in two editions, Home Edition and Business Edition. The Business Edition packages add ESET Remote Administrator allowing for server deployment and management, mirroring of threat signature database updates and the ability to install on Microsoft Windows Server operating systems.
Norton AntiVirus is an anti-virus or anti-malware software product founded by Peter Norton, developed and distributed by Symantec since 1990 as part of its Norton family of computer security products. It uses signatures and heuristics to identify viruses. Other features included in it are e-mail spam filtering and phishing protection.
Avast Software s.r.o. is a Czech multinational cybersecurity software company headquartered in Prague, Czech Republic, that researches and develops computer security software, machine learning, and artificial intelligence. Avast has more than 435 million monthly active users and the second largest market share among anti-malware application vendors worldwide as of April 2020. The company has approximately 1,700 employees across its 25 offices worldwide. In July 2021, NortonLifeLock, an American cybersecurity company, announced that it was in talks to merge with Avast Software. In August 2021, Avast's board of directors agreed to an offer of US$8 billion.
Windows Live OneCare was a computer security and performance enhancement service developed by Microsoft for Windows. A core technology of OneCare was the multi-platform RAV, which Microsoft purchased from GeCAD Software Srl in 2003, but subsequently discontinued. The software was available as an annual paid subscription, which could be used on up to three computers.
Adaware, formerly known as Lavasoft, is a software development company that produces spyware and malware detection software, including Adaware. It operates as a subsidiary of Avanquest, a division of Claranova.
Kaspersky Anti-Virus is a proprietary antivirus program developed by Kaspersky Lab. It is designed to protect users from malware and is primarily designed for computers running Microsoft Windows and macOS, although a version for Linux is available for business consumers.
VirusTotal is a website created by the Spanish security company Hispasec Sistemas. Launched in June 2004, it was acquired by Google in September 2012. The company's ownership switched in January 2018 to Chronicle, a subsidiary of Google.
Microsoft Security Essentials (MSE) is a discontinued antivirus software (AV) product that provides protection against different types of malicious software, such as computer viruses, spyware, rootkits, and Trojan horses. Prior to version 4.5, MSE ran on Windows XP, Windows Vista, and Windows 7, but not on Windows 8 and later versions, which have built-in AV components known as Windows Defender. MSE 4.5 and later versions do not run on Windows XP. The license agreement allows home users and small businesses to install and use the product free of charge.
Comodo Internet Security (CIS) is developed and distributed by Comodo Group, a freemium Internet security suite that includes an antivirus program, personal firewall, sandbox, host-based intrusion prevention system (HIPS) and website filtering.
Kaspersky Lab is a Russian multinational cybersecurity and anti-virus provider headquartered in Moscow, Russia, and operated by a holding company in the United Kingdom. It was founded in 1997 by Eugene Kaspersky, Natalya Kaspersky and Alexey De-Monderik. Kaspersky Lab develops and sells antivirus, internet security, password management, endpoint security, and other cybersecurity products and services.
Multiscanning is running multiple anti-malware or antivirus engines concurrently. Traditionally, only a single engine can actively scan a system at a given time. Using multiple engines simultaneously can result in conflicts that lead to system freezes and application failures. However, a number of security applications and application suites have optimized multiple engines to work together.
Trend Micro Internet Security is an antivirus and online security program developed by Trend Micro for the consumer market. According to NSS Lab comparative analysis of software products for this market in 2014, Trend Micro Internet Security was fastest in responding to new internet threats.
Avira Operations GmbH & Co. KG is a German multinational computer security software company mainly known for its Avira Free Security antivirus software. Although founded in 2006, the Avira antivirus application has been under active development since 1986 through its predecessor company H+BEDV Datentechnik GmbH. Since 2021, Avira has been owned by American software company NortonLifeLock, which also operates Norton, Avast and AVG. It was previously owned by investment firm Investcorp.
AV-Comparatives is an Austrian independent organization that tests and assesses antivirus software, regularly releasing charts and reports that are freely available to the public and the media. Antivirus vendors have to meet various requirements regarding trustworthiness and reliability in order to take part in the tests.
MacKeeper is a cleanup utility for macOS. MacKeeper was developed by ZeoBIT, later acquired by Kromtech, and is currently owned by Clario Tech.
Zeobit LLC was a technology and software company formed in 2009 by CEO Slava Kolomiychuk and located in Sunnyvale, California. The company specialized in computer security software and internet security. As of December 2016, it is no longer in business.
Norton, formerly known as Norton by Symantec, is a brand of Gen Digital co-headquartered in Tempe, Arizona and Prague, Czech Republic. Norton originally provided utility software for DOS, and currently offers a variety of products and services related to digital security, identity protection, and online privacy and utilities.
Kromtech Alliance Corp. is a Security software organization and IT investment and development company that develops software and provides customer support services for Apple's Mac OS. Kromtech Alliance Corp previously owned and distributed MacKeeper, Memory Keeper, and the anti-theft application Track My Mac.
