Antivirus software are computer programs that attempt to identify, neutralize or eliminate malicious software. The term "antivirus" is used because the earliest examples were designed exclusively to combat computer viruses; however most modern antivirus software is now designed to combat a wide range of threats, including worms, phishing attacks, rootkits, trojan horses and other malware. Antivirus software typically uses two different approaches to accomplish this:
* examining (scanning) files to look for known viruses matching definitions in a virus dictionary, and
* identifying suspicious behavior from any computer program which might indicate infection.

The second approach is called heuristic analysis. Such analysis may include data captures, port monitoring and other methods.
Most commercial antivirus software uses both of these approaches, with an emphasis on the virus dictionary approach.

Antivirus Software & Freeware

Antivir Personal Edition
H+BEDV - 16.96MB (Freeware)
Antivirus gratis - The AntiVir Personal Edition offers the effective protection against computer viruses for the individual and private use on a single PC-workstation.

Avast Home Edition
Alwil Software - 17.62MB (Non-Commercial Freeware)
Antivirus gratis - Avast! 4 Home Edition is a full-featured antivirus package designed exclusively for home users, non-commercial users. Home Edition is free of charge.

AVG Free/Trial Edition (recomended)
Grisoft Inc - 31.45MB (Freeware)
Antivirus gratis yang paling banyak dipakai netter saat ini - AVG Free Edition is the well-known anti-virus protection tool. AVG Free is available free-of-charge to home users for the life of the product!

BitDefender - 21.08MB (Freeware)
BitDefender Free Edition is your chance to use one of the world's most effective antivirus engines for free!

ClamWin - 16.64MB (Open Source)
Antivirus Open Source. ClamWin is an Antivirus tool that comes with an easy installer and is open source code at no cost.

Kaspersky - 25.82MB (Commercial Trial)
Antivirus buatan Rusia yang mendapat banyak penghargaan. - Kaspersky Lab has proven expertise in protecting against viruses, Internet worms, email worms, Trojans and other malicious programs.

McAfee - 9.54MB (Commercial Trial)
Antivirus yang paling popular di dunia dan merupakan salah satu yang terbaik. - Proven security that protects against viruses and spyware.

Norman Malware Cleaner
Tool removal virus, spyware dan malware dari Norman.

NOD32 AntiVirus
ESET - 16.14MB (Commercial Trial)
ESET's NOD32 protects you without requiring you to become an expert in malware. Because everybody deserves the best protection possible against virus.

Norton Anti Virus
Symantec - 57.19MB (Commercial Trial)
Antivirus yang paling powerful saat ini - Stay protected with the world's most trusted antivirus. software.

PCMAV (recomended)
Antivirus lokal buatan Indonesia dan diedarkan lewat majalah PC Media, cocok buat basmi virus-virus lokal.