ESET NOD32 Antivirus

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.

ESET NOD32 Antivirus

ESET NOD32 Antivirus
Developer(s)	ESET
Stable release	4.2.71.2 / 25 January 2011; 5 months ago
Preview release	5.0.84 RC 1 / 14 June 2011; 27 days ago
Operating system	Microsoft Windows, Mac OS X, Linux, FreeBSD, DOS, Novell NetWare, Solaris, Windows Mobile
Type	Antivirus software
License	Proprietary commercial software
Website	eset.com

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McAffee AntiVirus

McAfee VirusScan is an antivirus program created and maintained by McAfee Inc. (formerly known as Network Associates). McAfee markets VirusScan to home and home-office users; McAfee also develops VirusScan Enterprise for use in corporate environments. The product is not available as a standalone package, but is included in the McAfee VirusScan Plus package or as part of McAfee Internet Security Suite. McAfee also produces a similar product for Mac OS X under the name of VirusScan for Mac. Additionally, BSkyB and McAfee have produced a "Sky Broadband" branded version of VirusScan, offered free to Sky Digital customers upon broadband modem installation.

McAfee SecurityCenter v11.0.560 on Windows 7
Developer(s)	McAfee
Stable release	v11.0.560 (Security Centre);v15.0.288 (Virus Scan) / 2011-06-24
Operating system	Microsoft Windows, Mac OS X, Linux
Type	Antivirus
License	Proprietary
Website	McAfee.com

McAfee VirusScan is an antivirus program created and maintained by McAfee Inc.
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Winamp Software

Winamp is a media player for Windows-based PCs and Android devices, written by Nullsoft, now a subsidiary of AOL. It is proprietary freeware/shareware, multi-format, extensible with plug-ins and skins, and is noted for its graphical sound visualization, playlist, and media library features. Winamp was developed by American programmer Justin Frankel and Russian programmer Dmitry Boldyrev while both were students at the University of Utah in 1997, and its popularity grew quickly, along with the developing trend of MP3 file-sharing.
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Norton AntiVirus

Norton AntiVirus, developed and distributed by Symantec Corporation, provides malware prevention and removal during a subscription period. It uses signatures and heuristics to identify viruses. Other features include e-mail spam filtering and phishing protection.
Symantec distributes the product as a download, a box copy, and as OEM software. Norton AntiVirus and Norton Internet Security, a related product, held a 61% US retail market share for security suites as of the first half of 2007. Competitors, in terms of market share in this study, include antivirus products from CA, Trend Micro, and Kaspersky Lab.
Norton AntiVirus runs on Microsoft Windows and Mac OS X. Version 18.6.0.29 is the latest Windows build.Windows 7 support is in development for versions 2006 through 2008. Version 2009 has Windows 7 supported update already. Version 2010 natively supports Windows 7, without needing an update. Version 11.1.1 is the latest Mac build.
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Antivirus Software

Antivirus or anti-virus software is used to prevent, detect, and remove malware, including but not limited to computer viruses, computer worm, trojan horses, spyware and adware. This page talks about the software used for the prevention and removal of such threats, rather than computer security implemented by software methods.
A variety of strategies are typically employed. Signature-based detection involves searching for known patterns of data within executable code. However, it is possible for a computer to be infected with new malware for which no signature is yet known. To counter such so-called zero-day threats, heuristics can be used. One type of heuristic approach, generic signatures, can identify new viruses or variants of existing viruses by looking for known malicious code, or slight variations of such code, in files. Some antivirus software can also predict what a file will do by running it in a sandbox and analyzing what it does to see if it performs any malicious actions.
No matter how useful antivirus software can be, it can sometimes have drawbacks. Antivirus software can impair a computer's performance. Inexperienced users may also have trouble understanding the prompts and decisions that antivirus software presents them with. An incorrect decision may lead to a security breach. If the antivirus software employs heuristic detection, success depends on achieving the right balance between false positives and false negatives. False positives can be as destructive as false negatives^{[citation needed]}. Finally, antivirus software generally runs at the highly trusted kernel level of the operating system, creating a potential avenue of attack.

BitDefender antivirus software

BitDefender is an antivirus software suite developed by Romania-based software company Softwin. It was launched in November 2001, and is currently in its thirteenth version. The 2011 version was launched in August 2010, and it includes several protection and performance enhancements as Search Advisor and Performance Optimizer.
The BitDefender products feature antivirus and antispyware, personal firewall, privacy control, user control and backup for corporate and home users. PC Tuneup and Performance Optimizer are available in the Total Security Suite.
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AVG SOFTWARE

AVG is a family of anti-virus and Internet security software for the Microsoft Windows, Linux, Mac OS X, and FreeBSD computing platforms, developed by AVG Technologies, a privately held Czech company formerly known as Grisoft.
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Avast! Antivirus

Avast! is an antivirus computer program developed by AVAST Software a.s. (formerly known as ALWIL Software a.s.), a company based in Prague, Czech Republic. It was first released in 1988. Avast! is based on a central scanning engine that is certified by ICSA Labs and West Coast Lab's Checkmark process and incorporates anti-spyware technology, also certified by West Coast Lab's Checkmark process, as well as anti-rootkit and self-protection capabilities. It is a multiple recipient of the Virus Bulletin VB100 Award for its detection of 100% of "in-the-wild" viruses, and is a past winner of the Secure Computing Readers' Trust Award. The name Avast is derived from "Anti-Virus – Advanced Set". Its trademarked name is styled in all lower-case, and includes an exclamation mark.
Avast! Free Antivirus is the freeware version of the Avast! antivirus software available to Microsoft Windows and Linux users, while Avast! Pro Antivirus is offered to businesses and users who want additional features. Priority updates are delivered automatically using PUSH update technology in Avast! Pro Antivirus. Avast! Pro Antivirus also has a command line scanner and a script blocker; however, in version 6, the script blocker is available to users of the free version.
Avast! Antivirus is a widely used antivirus program, with 130 million users worldwide as of September 2010.
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