ThreatFire is dramatically different to traditional antivirus software. Normal antivirus products usually need to have first identified and seen a threat before they can provide adequate protection against it. The protection is then provided via a signature or fingerprint update, which must first be written by an antivirus researcher. This creates a large window of time where threats are undetected and can therefore infect your PC even when you have antivirus software installed.

ThreatFire continually protects your PC against attacks by detecting malicious behavior, such as capturing your keystrokes or stealing your data, instead of only looking for known threats like normal antivirus software. By implementing sophisticated real-time behavioral analysis ThreatFire is able to stop never- before-seen “zero-day” threats solely by detecting their malicious activity.

Zero-day threats are usually designed to take advantage of new vulnerabilities or exploits that are currently unprotected by traditional security products. They are usually distributed in huge quantities very quickly by mass email (SPAM), website hijacks, instant messaging or over peer-to-peer networks. Because they are undetectable they are able to wreak havoc and compromise your PC even when you have up-to-date antivirus software installed.

ThreatFire’s patent-pending ActiveDefense technology offers protection against all types of internet threats - both known and unknown - spyware, adware, keyloggers, viruses, worms, Trojans, rootkits, buffer overflows, and other malware. ThreatFire uses its unparalleled protection to hunt down and paralyze those threats that are either too new or too clever to be recognized by traditional “signature-based” antivirus software.

Developer: PC Tools
License: Freeware
OS: Windows All
Size: 15.5 MB
Download ThreatFire 3.5 link

avast! 4 Home Edition is a full-featured antivirus package designed exclusively for home users and non-commercial use. Both of these conditions should be met! ALWIL Software offers the Home Edition free of charge, since, in our opinion, it is possible to avoid global virus spreading by efficient prevention; however, many users are not able to or do not want to pay for antivirus software.

avast! 4 Home Edition features:
The latest version of avast! antivirus kernel features outstanding detection abilities, together with high performance. You can expect 100% detection of In-the-Wild viruses (viruses already spreading between users) and excellent detection of Trojan horses.

The Simple User Interface is used to start on-demand scanning, work with the results and change various options. Basic resident protection settings can be modified here. The Simple User Interface is the main application of avast! 4 Home Edition. You can start additional avast! modules from here, such as the Virus Chest, Updater or Log Viewer.

Resident protection (the real-time protection of the operating system), is one of the most important parts of an antivirus program today. avast! features a powerful resident module that is able to detect a virus before it has any chance to infect your computer.

Avast features a module for the protection of IM (Instant Messaging, “chat”) programs, and a module for the protection of P2P (peer-to-peer) programs. The list of supported IM and P2P programs is extensive with more than 30 programs currently supported.

A new resident protection module was added to avast! 4.5: the Network Shield. This module provides protection against known Internet worms/attacks. It analyses all network traffic and scans it for malicious contents. It can be viewed as a lightweight firewall (or more precisely, an IDS (Intrusion Detection System)).

Developer: ALWIL Software
License: Freeware
OS: Windows All
Size: 20.8 MB
Download Avast Home Edition 4.8.1201 link

Avira AntiVir Personal reliably protects your private computer against dangerous viruses, worms, Trojans and costly dialers. More than 30 million users worldwide trust in the reliable protection of Avira AntiVir. And this is no coincidence at all: Avira has gained several awards. The product combines first-class detection rates and ease of use with a top performance that protects your computer safely and hardly burdens older PCs.

Functions and advantages of Avira AntiVir:
* Protection against viruses, worms and Trojans
* Protection against expensive dialers and phishing
* Detects and deletes rootkits

Developer: Avira
License: Freeware
OS: Windows All
Size: 11.4 MB
Download Avira AntiVir Personal 8.1.0.460 link

F-PROT Antivirus is a powerful new antivirus program. It custom features: Easy to use, Fast, Light on computer resources, Install and forget, License for up to 5 computers in the home. While adding significant new features, F-PROT Antivirus builds on the product’s history of reliability, ease-of-use and speed to provide a powerful yet affordable antivirus solution.

New Features in F-PROT Antivirus:
* Advanced heuristics-based detection defends against new and unknown threats
* Completely automatic file system protection that scans and disinfects all file types, including those downloaded by web browsers and e-mail applications
* Fully automated and streamlined virus signature file updates and software upgrades
* E-mail protection that provides automatic real-time protection against threats from incoming and outgoing e-mail attachments.
* More advanced detection of malicious programs
* Suspicious/infected files are automatically backed up into a safe quarantine area before they are disinfected or deleted
* Exclude files from automatic and manual scan
* Schedule tasks to scan for viruses at a specified time and date
* Quarantine for the isolation of infected or suspicious files
* Password protection to prevent unauthorized modification of your settings
* Protection against malicious ActiveX code downloads (such as Microsoft ActiveX Controls or installs)

Developer: Frisk Software International
License: Shareware
OS: Windows All
Size: 19.1 MB
Download F-Prot Antivirus 6.0.9.1 link

Multi Virus Cleaner is a free, stand-alone utility used to detect and remove major viruses. It is not a substitute for full anti-virus protection, but rather a tool to assist administrators and users when cleaning infected systems.

Multi Virus Cleaner is regularly updated and can detect over 6,000 common viruses, worms, trojans and dialers (including all variants of the Sober, MyDoom and Bagle viruses). The program boasts a fast, user-friendly scanner that requires minimal processing power and is an excellent choice for repairing a compromised system.

Developer: AxBx
License: Freeware
OS: Windows All
Size: 1.6 MB
Download Multi Virus Cleaner 8.2.0 link

Anti-Virus&Trojan is a powerfull application for detect and eliminate viruses, Trojans, and macro viruses on your PC.

Anti-Virus and Trojan initiated a system named Guard Ghost to supervise all running processes in the memory system, Windows files, and open ports to search worms and Trojan horses. Once a virus or Trojan appears, even if it is hidden in other programs, Anti-Virus and Trojan will display a warning signal and eliminate it consequently. Meanwhile, Anti-Virus and Trojan will clear all virus-system-linked files as well as relative registered files.

Developer: Your soft
License: Shareware
OS: Windows All
Size: 1.9 MB
Download Anti-Virus&Trojan 7.70 link

TrojanHunter searches for and removes trojans from your system. With an easy-to-use Scanner and a Guard that scans in the background TrojanHunter is a must-have complement to your virus scanner. If you are downloading files from the Internet, you need TrojanHunter!

Features:
* High-speed file scan engine capable of detecting modified trojans
* Memory scanning for detecting any modified variant of a particular build of a trojan
* Registry scanning for detecting traces of trojans in the registry
* Inifile scanning for detecting traces of trojans in configuration files
* Port scanning for detecting open trojan ports
* The Advanced Trojan Analyzer, an exclusive feature of TrojanHunter, is able to find whole classes of trojans using advanced scanning techniques
* TrojanHunter Guard for resident memory scanning - detect any trojans if they manage to start up
* LiveUpdate utility for effortless ruleset updating via the Internet
* Process list giving details about every running process on the system, including the path to the actual executable file
* Accurate removal of all detected trojans - even if they are running or if the trojan has injected itself into another process
* Built-in netstat viewer
* Extensive help files
* Free technical support via e-mail

Developer: Mischel Internet Security, Inc.
License: Shareware
OS: Windows All
Size: 15.1 MB
Download TrojanHunter 5.0.962 link

Easy to use FREE curing utility to clean your computer infected with viruses and various unwanted codes by the Dr.Web Anti-virus updated once or several times an hour.

What is Dr.Web CureIt!?
This is a FREE anti-virus and anti-spyware utility based on Dr.Web Anti-virus scanner, which will help you quickly scan and cure, if necessary, a computer operated by MS Windows 95OSR2/ 98/Me/NT 4.0/2000/XP/2003/Vista without installation of the Dr.Web Anti-virus.

Dr.Web CureIt! automatically detects the language of the OS it is installed to and sets the scanner interface accordingly (if the local language is not supported, English is enabled).

The utility contains the most up-to-date add-ons to the Dr.Web virus databases going up to twice per hour frequency at periods of high malware submissions.

Dr.Web CureIt! detects and removes
* Rootkits * Mass-mailing worms * E-mail viruses * Peer-to-peer viruses * Internet worms * File viruses * Trojans * Stealth viruses* Polymorphic viruses * Bodiless viruses * Macro viruses * MS Office viruses * Script viruses * Spyware * Spybots * Password stealers * Keyloggers* Paid Dialers * Adware * Riskware* Hacktools * Backdoors * Joke programs * Malicious scripts * Other malware*

Dr.Web CureIt! Screenshot

Developer: Doctor Web, Ltd
License: Freeware
OS: Windows All
Size: 8.7 MB
Download Dr.Web CureIt! 4.44 link

The new Panda Antivirus 2008 is the easiest-to-use protection for your computer. Just install it and forget about all viruses, spyware and online fraud. And you hardly have to lift a finger, so you can chat, share photos and videos with friends, read your favorite blogs or simply surf the Web, with complete peace of mind. And it’s so light, you won’t even notice it.

If content is missing from your hard disk, if you have problems starting your computer, or if some of your files are unusable, you can be sure you’ve been hit by a computer virus. You can be infected just by surfing the Net, downloading a file, or opening an email attachment. There are also the dangers of worms and Trojans which now use new stealth techniques to evade detection.

With Panda Antivirus 2008 you can use the Internet and download or share files in the knowledge that you are fully protected against all types of viruses, worms and Trojans. Forget about infections!

Panda Antivirus 2008 includes:
- Antivirus
- AntiSpyware
- AntiPhishing
- AntiRootkit
- TotalScan Pro

Developer: Panda Software
License: Shareware
OS: Windows All
Size: 46.6 MB
Download Panda Antivirus 2008 3.01 link

Kaspersky Anti-Virus 7.0 provides you with traditional anti-virus protection based on the latest protection technologies. You can work, communicate, surf the internet and play online games on your computer safely and easily.

Product Highlights

• Three protection technologies against new and unknown threats: 1) Hourly automated database updates, 2) Preliminary behavior analysis, 3) On-going behavior analysis. New!
• Protection from viruses, Trojans and worms
• Protection from spyware and adware
• Real-time scanning for email, Internet traffic and files
• Protection from viruses when using ICQ and other IM clients
• Protection from all types of keyloggers. Improved!
• Detection of all types of rootkits. Improved!
• Automatic database updates

Additional Features

• Rollback of unwanted changes on your computer
• Self-defense of the antivirus program from being disabled or stopped
• Tools for creating a Rescue Disk
• Free technical support

Developer: Kaspersky.com
License: Shareware
OS: Windows All
Size: 23.6 MB
Download Kaspersky Anti-Virus 7.0.1.321 link