ClamWin is a Free Antivirus program for Microsoft Windows 98/Me/2000/XP/2003 and Vista. ClamWin Free Antivirus comes with an easy installer and open source code. You may download and use it absolutely free of charge. It features:

* High detection rates for viruses and spyware;
* Scanning Scheduler;
* Automatic downloads of regularly updated Virus Database.
* Standalone virus scanner and right-click menu integration to Microsoft Windows Explorer;
* Addin to Microsoft Outlook to remove virus-infected attachments automatically.

Please note that ClamWin Free Antivirus does not include an on-access real-time scanner. You need to manually scan a file in order to detect a virus or spyware.

Developer: ClamWin
License: Freeware
OS: Windows All
Size: 20.9 MB
Download ClamWin Free Antivirus 0.93.1 link

Security must not be a privilege. Under this motto, Emsi Software provides the Malware scanner a-squared Free Edition completely free of charge for private use. But it is not a very limited version, it is a full tool to clean your computer from Malware. Not only Spywares, as detected by classic Anti-Spyware programs, but also especially Trojans, Backdoors, Worms, Dialers, Keyloggers and a lot of other destructive pests, which makes it dangerous to surf the web.

Clean your PC with a-squared Free Edition:
* Remove infections of Trojans, Spyware, Adware, Worms, Keyloggers, Rootkits, Dialers and other malicious programs.
* 4 million users world wide rely on a-squared to clean their PC from Malware.
* Remarkable easy to use and completely free or charge.

Developer: Emsi Software
License: Freeware
OS: Windows All
Size: 24.8 MB
Download a-squared Free Edition 3.5.0.25 link

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

SUPERAntiSpyware is the most thorough AntiSpyware scanner on the market. Our Multi-Dimensional Scanning and Process Interrogation Technology will detect spyware that other products miss! SUPERAntiSpyware will remove ALL the Spyware, NOT just the easy ones!

Easily remove over 1 million pests and threat components such as VirusRay, AntiVirGear, VirusProtectPro, DriveCleaner, SmitFraud, Vundo, WinFixer, SpyAxe, SpyFalcon, WinAntiVirus, AntiVermins, AntiSpyGolden and thousands more!

SUPERAntiSpyware 4.0 - 50% Faster - Download the Pre-Release Today!
* Quick, Complete and Custom Scanning of Hard Drives, Removable Drives, Memory, Registry, Individual Folders and More! Includes Trusting Items and Excluding Folders for complete customization of scanning!
* Detect and Remove Spyware, Adware, Malware, Trojans, Dialers, Worms, KeyLoggers, HiJackers, Parasites, Rootkits and many other types of threats.
* Light on System Resources and won’t slow down your computer like many other anti-spyware products. Won’t conflict with your existing anti-spyware or anti-virus solution!
* Repair broken Internet Connections, Desktops, Registry Editing and more with our unique Repair System!
* Real-Time Blocking of threats! Prevent potentially harmful software from installing or re-installing!*
* Multi-Dimensional Scanning detects existing threats as well as threats of the future by analyzing threat characteristics in addition to code patterns.
* First Chance Prevention examines over 50 critical points of your system each time your system starts up and shuts down to eliminate threats before they have a chance to infect and infiltrate your system.
* Process Interrogation Technology allows threats to be detected no matter where they are hiding on your system.

Developer: SUPERAntiSpyware.com
License: Freeware
OS: Windows All
Size: 6.1 MB
Download SUPERAntiSpyware Free Edition 4.15.1000 Beta link

The Microsoft Windows Malicious Software Removal Tool checks computers running Windows Vista, Windows XP, Windows 2000, and Windows Server 2003 for infections by specific, prevalent malicious software—including Blaster, Sasser, and Mydoom—and helps remove any infection found. When the detection and removal process is complete, the tool displays a report describing the outcome, including which, if any, malicious software was detected and removed.

Microsoft releases an updated version of this tool on the second Tuesday of each month, and as needed to respond to security incidents. The tool is available from Microsoft Update, Windows Update and the Microsoft Download Center.

Developer: Microsoft
License: Freeware
OS: Windows All
Size: 7.8 MB
Download Malicious Software Removal Tool 1.41 link

SPAMfighter Pro has partnered up with Microsoft to build the strongest, safest, and most effective anti spam tool on the market. If you use Outlook, Outlook Express or Windows Mail and you want to get rid of spam, just install SPAMfighter Pro. And if you use it at home, it’s 100% free.

* Award winning spam blocking technology
* Protects against “phishing”, identity theft, and other email fraud
* Free automatic updates
* Used by more than 4 million happy users around the World
* Protects all the email accounts on your PC
* Unique language filtering tool that empowers you to stop emails written in specific languages
* Unique picture filter that can recognize spam which is sent as a picture
* Automatic “real mail” protection - means no lost business mails!
* Blacklist domains and emails
* Spam Abuse Reporting with one click
* Automatic Whitelist management
* Privacy Guaranteed - we don’t see any of your email
* Does not filter based on simple phrases or “trigger” words. Allows any content
* Language support by SPAMfighter Pro: English, German, Spanish, Chinese, French, Italian, Greek, Dutch, Swedish, Norwegian, Suomi, Russian, Bulgarian, Portuguese, Japanese, Czech, Thai and Danish

Developer: SPAMfighter
License: Shareware
OS: Windows All
Size: 1.34 MB

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

FlvPlayer4Free is a greatly improved solution that allows even the most demanding users to easily play their favourite FLV files in the hard disk or from internet. It does not require the Flash authoring tool and it offers attractive and useful functions as:

* Drag & Drop: drag your FLV file and drop it into FLVPlayer4free main window-Supporting FLV AVI DIVX XVID MP4 MPG WMV ASF MPEG M4V MKV DVR-MS HDMOV M2TS M2T * MKA 3GP 3G2 3GPP 3GP2 MOV QT RM RAM RMVB video files
* Save frame as image (JPG, PNG, BMP)
* Playlist Editor
* Multi language: easily create/turn into your language
* Full Screen for a wider image
* Fully Resizable window
* Always on top to keep an eye on it anytime
* Handy volume commands and mute option
* Remember last settings
* Auto hide control and mouse cursor on full screen
* FLV Association
* Useful autoplay and autorepeat
* Practical Play, Pause, Rewind, Fast forward and Seeking bar buttons
* Elapsed and total time always displayed to keep them under control
* Multi instance which allows you to run muliple FLV files at the same time
* FLV information always available

Developer: FLVPlayer4Free.com
License: Freeware
OS: Windows All
Size: 1.7 MB
Download FLVPlayer4Free 2.7.0.0 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