List of Best Free Antivirus of 2020 Free Download | Microsoft Windows, macOS, Linux, Android, iOS

DownloadAvast is an antivirus and security suite software from the Czech firm Avast Software (formerly called ALWIL Software), developed in the early 1990s. According to OPSWAT report, with a market share of 21.4% is the free antivirus software most used in the world since 2017. Avast Antivirus products include free and paid versions that provide computer security, browser security, antivirus software, firewalls, anti-phishing, anti-spyware and anti-spam among other services, also has a central analysis engine that successfully passed the ICSA Labs certification and West Coast Labs tests. According to its creators, Avast was originally conceived under the name of 'Anti-Virus Advanced Set' (whose initials form the current name of the brand), in addition to that, in the Pirate jargon, the expression avast! means high! or stop, so it was used for product identity. As of the 2015 edition, avast! It was renamed 'Avast' for unknown reasons.

DownloadAVG AntiVirus, or only AVG (Anti Virus Guard), is an antivirus software developed by the Czech company, AVG Technologies, available for Windows, Linux, Android, iOS and Windows Phone operating systems, among others. Currently this antivirus software in all its versions is owned by Avast. The trade name for AVG Technologies security software is AVG, which comes from its first product, Anti-Virus Guard. AVG Technologies is a private company Czech formed in January 1991 by Gritzbach and Tomas Hofer. In early September of 2005, the company was bought by Intel Corporation. The 19 of April of 2006, the Networks ewido became part of the group of AVG Technologies. The 6 of November of 2006, Microsoft announced that AVG products would be available directly from the Security Center of Windows Vista. From the 7 of June of 2006, the AVG software has also been used as an optional component of GFI Mail Security, produced by GFI Software. On December 5, 2007, AVG announced the acquisition of Exploit Prevention Labs, developer of LinkScanner that makes safe navigation on the technology. On February 8, 2008, Grisoft announced that they would change the name of the Grisoft Company to AVG Technologies. This change was made to increase the effectiveness of your marketing activities.

DownloadBitdefender is a computer security company. It was founded in 2001 by Florin Talpeş who is its current CEO. Bitdefender develops and distributes antivirus software, end-point security software and other cyber-security products and services. In 2017, the software had about 500 million users worldwide. In August 2017, Bitdefender was ranked as the ninth global company in the ranking of producers of computer security for Windows. Provides antivirus, firewall, antispyware, antispam and parental control solutions for corporate and home users. The BitDefender product range is developed to be implemented in complex IT structures (workstations, file servers, mail servers and gateways), on Microsoft Windows, Linux or FreeBSD platforms. Its products are distributed worldwide in more than 20 languages: Spanish, Catalan, English, German, French, Romanian, Czech and Korean, among others. Home Security: BitDefender Total Security, BitDefender Internet Security, BitDefender Antivirus Plus, BitDefender for Mac, BitDefender Mobile Security.

DownloadAvira Operations GmbH & Co. is a German computer security company. Its antivirus applications are based on the AntiVir engine, launched in 1988, commonly called Luke Filewalker. It was founded under the name of "H + BEDV Datentechnik GmbH". One of its antivirus applications, AntiVir Personal Edition Classic, is multiplatform (mac, windows, linux) and free for personal use. Avira's engine has been licensed to Ashampoo and Webroot WebWasher antivirus. It has a free antivirus software for personal use and its main rival is Avast!, although in recent tests this has been inferior in several aspects compared to Avira. In aspects such as: Resource consumption, heuristics, and a high capacity to detect rootkits and Trojans. Avira Free Antivirus is Freeware. Like most antivirus software, it scans hard and removable drives for viruses and also runs as a background process, checking each open and closed file. This can discover and possibly remove rootkits. This also performs an update on the Internet (daily) in which it opens a window, with an ad that advises the user to buy Avira AntiVir Premium. Avira updated all its products to version 10.0 in March 2010. Version 10.0 (free) has a faster scan engine and a more refined user interface.

DownloadNANO Antivirus - Russian anti-virus software helps protect your computer from all types of malware, cryptographers, blocker screen, banking Trojans, potentially unwanted programs, adware, spyware, etc. Developed by NANO Security. The developers position NANO Anti-Virus as a high-tech product that guarantees reliable protection of the computer against any types of viruses, Trojans, worms and other malicious software, as well as safe work on the Internet. Antivirus provides schedule support, that is, performing system scans and updates at a set time interval. Such tasks can automate specific actions to provide maximum data protection. NANO Anti-Virus performs a full scan of the system, portable storage medium, updating the anti-virus database or components is simple and convenient for the user. NANO Anti-virus provides real-time security. If this function is enabled, then the files, to which access is provided, independently, by the system or by the user, are immediately checked for malicious code. You can add any object to the exclusion list, otherwise called the "trusted zone", therefore, the data included in the list is not checked when scanning files. Such a method allows users to create a zone of trusted files, the safety of which is certain, and save time spent on processing large archives with data. Like many other anti-viruses, NANO Anti-Virus has a quarantine function that serves to isolate all suspicious files in the system. Files from quarantine can be sent to technical support for more in-depth analysis and adding to the virus database if necessary. For those who have administrative rights, the launch function is implemented on behalf of another user. Supports protection against changing settings when the function is on, you can change the settings only with a password. It is possible to automatically copy (mirror) updates to a folder specified by the user, which can be configured to be used as a source of updates. These functions are useful for convenient integration of the complex into the infrastructure.

DownloadClamWin is an antivirus software free for Microsoft Windows (98/Me/2000/XP/Vista/7/8/10 and 2003/2008/2012). Based on the engine and database virus of ClamAV, it is written in C++ and Python. In february 2005, ClamWin is voted "project of the month" on SourceForge.net. Based on the ClamAV library, ClamWin benefits from its rapidly evolving viral database, notably thanks to users who regularly send new virus maintainers to maintainers. 100,000 viruses recognized in March 2007, the viral base has four years later, in 2011, over a million references to known viruses. ClamWin does not have real-time protection. However, this functionality can be provided by third-party software that will work in conjunction with ClamWin: Clam Sentinel. It is also a program under the GNU GPL license, which in 2016 is actively developed. Features of ClamWin: Scheduled Scan Scheduler, Automatic update of the anti-virus database, Antivirus scanner, Integration into the context menu of Explorer in Windows, Plugin for Microsoft Outlook, Ability to work from a flash drive or CD without the need for installation, There is also a plugin for Mozilla Firefox, which can use ClamWin Free Antivirus to scan downloaded files for viruses.

DownloadComodo Internet Security (abbreviated as CIS) is a freemium security suite, developed and distributed by Comodo Group, which provides antivirus protection, personal firewall, sandbox and a host-based intrusion prevention system (HIPS). PC Magazine security analyst, Neil J. Rubenking, tested Comodo Firewall Pro 3.0 and Comodo Internet Security 3.5 on November 3, 2008, giving 4.5 of 5 to the first and 2.5 to the second. He praised the firewall's capabilities but criticized its anti-malware capabilities. On May 28, 2009, Roboert Vamosi of PC World analyzed Comodo Internet Security 3.8 and gave him a score of 1 out of 5, criticizing him for his "disappointing malware detection" based on the result of AV-TEST and the "feature set limited". Three years later, Comodo Antivirus results improved significantly. On January 30, 2012, Rubenking tested Comodo Internet Security 2012 Pro (v5.0), giving it 4 stars out of 5. He praised his support service and antimalware features, but criticized the firewall and the lack of parental control, antispam, antiphishing, privacy protection features, and low rates by independent laboratories. In a review of January 9, 2013, Techworld awarded Comodo Internet Security Pro 2013 4 out of 5 stars and concluded that cloud-based analysis and behavior analysis joins a set of top-notch security tools, designed to keep your PC safe.

DownloadImmunet is a free, cloud - based antivirus application using ClamAV and its own engine. On January 5, 2011, it was announced that Immunet was acquired by Sourcefire. The application is free, although a commercial version is also available. Virus signature files are stored in the cloud, not on separate computers, so signature downloads are not required. As soon as a virus is detected and blocked for one user, all other Immunet users receive the same protection almost instantly. The software is different in that it allows individual users to easily create their own signatures. The program only requires 10 MB of storage space, is free of charge, describes itself as fast and offers "up-to-date protection" against threats. Virus file signatures are stored in the cloud and not on individual computers, so downloading updates is no longer necessary. As soon as a virus is detected and blocked by a user, all Immunet users receive the same updated protection almost simultaneously. From version 3.0 "Immunet Free" offers protection based on virus definitions in the cloud and an option to include ClamAV offline virus definitions (for use when you are not connected to the internet). Immunet advises that the free version be used alongside another antivirus program and supports a number of such programs. These can be carried out side by side without there being any impairments or resource constraints.

DownloadFortinet is a US multinational company based in Sunnyvale, California. It is dedicated to the development and commercialization of cyber security software, devices and services, such as firewalls, antivirus, intrusion prevention and security in user devices, among others. It is the fourth largest (large) network security company by volume of revenue. Fortinet was founded in 2000 by brothers Ken and Michael Xie. In 2004, it had obtained around 93 million dollars of financing and had sold ten models of FortiGate devices. That same year a long patent dispute began between Fortinet and Trend Micro. Just this year, Thomas Muller buys his Australian subsidiary. Throughout the 2000s, Fortinet diversified its product range, incorporating wireless access points, sandboxing and messaging system security, among others. The company's FortiAnalyzer software provides reporting capabilities for Fortinet products, including event logging, security reports and analysis. FortiClient is an endpoint security product for desktop PCs, phones and other devices. The FortiClient VPN software was first launched in April 2004. FortiGuard anti-spam and FortiMail messaging security products were launched in February 2005. FortiManager, data center security software, began commercialization in April 2003. Fortinet introduced its range of base security products data in 2008. The FortiSwitch switching platforms Fortinet presented in 2009 and application publishing controllers (ADC) in August 2013. In October 2010, Fortinet launched versions of virtual software of your FortiGate, FortiManager, FortiAnalyzer and FortiMail devices. Updated the FortiCloud management system in August 2015. In September 2015, it presented a software-defined network connection product (SDN).

Download360 Total Security - comprehensive anti-virus protection with 5 anti-virus engines: the Bitdefender, avira, QVMII, 360 Cloud, System Repair engine. It includes proactive protection, web protection against malicious sites and downloads, anti-keylogger (for 32-bit systems). There is a version for Android, which is considered as one of the best such programs, and for Mac. Antivirus exists in two versions: 360 Total Security and 360 Total Security Essential (formerly 360 Internet Security). There is also an experimental version of 360 AntiVirus Beta (this product has several limitations: there is only a version for 64-bit, it is partially translated from Chinese into English, the distribution is intended only for test use). Antivirus uses signature, proactive and cloud technologies. 360 Total Security includes (except anti-virus tools) also tools: firewall (includes a separately installed GlassWire tool - network security monitor for network monitoring), sandbox, web browser protection, system optimization (startup, scheduled tasks, optimizing Internet connection. 360 Internet Security uses proactive technologies to warn you when a suspicious program is trying to access important system resources, such as Windows system settings, registry, program autorun, and system directories. It provides safe browsing of websites on the Internet, protection of privacy and against phishing sites, blocks the download of malicious files and stops keyloggers and programs for accessing the webcam.

DownloadWindows Defender, formerly known as Microsoft Anti Spyware, is a security program whose purpose is to prevent, remove and quarantine spyware in Microsoft Windows. It is included and activated by default in Windows Vista and Windows 7. In Windows 8 and Windows 10 a version of Microsoft Security Essentials is included under the name of Windows Defender, but this is used as antivirus and antispyware. In Windows XP it opens as mrt and Windows Server 2003. The features of Windows Defender are: analyze capabilities similar to other free products on the market and include a number of real-time security agents that monitor several common areas of Windows for changes that may be caused by spyware. It also includes the ability to easily remove ActiveX applications installed in Internet Explorer. It also integrated support for the Microsoft SpyNet network, allowing users to inform Microsoft of possible spyware attacks, and that device and application drivers can be installed on their computers. In early December 2008, Microsoft announced the development of an antivirus product code called "Morro", officially titled Microsoft Security Essentials. The free software or freeware replace both Windows Defender and Windows Live OneCare. OneCare would be suspended at the end of June 2009 and Windows Defender would be suspended at the end of summer of the same year. Users would continue to obtain the latest definition files against malicious software or malware until the end of the summer.