Free Norton 360
For a limited time, you can protect yourself with Norton 360 for FREE. See details for download instructions.
Microsoft Security Essentials
Security Essentials from Microsoft is definitely one of the best free antivirus programs available right now. Microsoft is relatively new to the antivirus game but don't let that scare you - Security Essentials is a fantastic antivirus program that protects you from all sorts of malware, updates automatically, and is incredibly easy to use.
Microsoft Security Essentials supports Windows 7, Windows Vista and Windows XP.
Two of the biggest reasons I added Microsoft Security Essentials to this list of the best free antivirus software is because it's directly from Microsoft and also because it's very easy to see if you're computer is secure from threats: if the icon next to your clock is green, you're in good; if it's red, something is wrong.
Panda Cloud Antivirus
Panda Cloud Antivirus protects you from several kinds of malware threats - viruses, worms, Trojans, adware, and more - just like all the other free antivirus programs in this list.
What makes Panda Cloud Antivirus one of the best free antivirus programs is that it does its job from "the cloud" meaning the hard antivirus work that typically slows down a computer is done on computers elsewhere on the Internet, freeing up your computer to work like it should and protecting you from malware even better.
Panda Cloud Antivirus supports Windows 7, Windows Vista and Windows XP.
Tip: Panda Cloud Antivirus tries to install a toolbar and set Yahoo! as your browser's home page during the installation process so uncheck the boxes before continuing if you don't want them. Neither are required to use Panda Cloud Antivirus.
digital-defender Antivirus isn't a popular antivirus program but it should be. It's certainly one of the best free antivirus software programs you'll find. It's a full antivirus and antispyware program and updates on a daily basis.
digital-defender Antivirus supports Windows 7, Windows Vista and Windows XP.
The relatively small installation size, daily virus definition updates, and full antispyware features make digital-defender Antivirus one of the better tools in my collection of the best free antivirus programs.
Immunet Protect FREE
Immunet Protect FREE is a unique, cloud-based antivirus program, much like Panda Cloud Antivirus. Immunet Protect FREE protects your computer from bots, worms, viruses, Trojans, keyloggers, and spyware.
Immunet Protect FREE works on Windows 7, Windows Vista and Windows XP. You must also be connected to the Internet at all times.
I think Protect FREE from Immunet is one of the best free antivirus programs for several reasons: you never have to update it, it has completely free telephone based support, and it can be run alongside some of the other best free antivirus tools like AVG Anti-Virus Free, Microsoft Security Essentials, and avast! Free Antivirus, increasing your overall protection!
PC Tools AntiVirus Free
PC Tools AntiVirus Free offers basic protection against viruses and other malware. While not my favorite, AntiVirus Free is still one of the best free antivirus programs you'll find.
PC Tools AntiVirus Free works on Windows 7, Windows Vista and Windows XP.
The biggest problems I have with PC Tools AntiVirus Free are the reminders throughout the program that there's a not-so-free version that you should upgrade to. To be fair, you probably won't notice it since the program runs silently in the background to protect you from viruses. I probably find it annoying because most of the features available in the upgrade are included for free in some of the higher rated best free antivirus programs above.
Free Norton anti-virus 2010 for 6 months
Norton is promoting their new Internet Security Suite in germany. The good news is that the product key can also be used in the english version of the product.
AVG Anti-Virus Free Edition
AVG Free Edition is the well-known antivirus protection tool. AVG Free is available free of charge to home users for the life of the product. Rapid virus database updates are available for the lifetime of the product, thereby providing the high level of detection capability that millions of users around the world trust to protect their computers. AVG Free is easy to use and will not slow your system down (low system resource requirements. Highlights include automatic update functionality, the AVG Resident Shield, which provides real-time protection as files are opened and programs are run, free Virus Database Updates for the lifetime of the product, and AVG Virus Vault for safe handling of infected files.
Avira AntiVir Personal
Avira AntiVir Personal Free Antivirus is a comprehensive, easy to use antivirus program, designed to offer reliable free of charge virus protection to home-users only. Avira offers: Extensive Malware Recognition of viruses, Trojans, backdoor programs, worms; Automatic incremental updates of antivirus signatures, engine and entire software; Permanent virus protection, with Virus Guard real time monitoring; Install and configuration in just a couple of steps, setup to protect your PC in minutes; Virus protection against known and unknown threats, using an advanced heuristic system; Scheduler where you can set the scanner to make automatic virus scans or updates on your system; Forum and phone support; Knowledge Base with virus descriptions available on web site; Rootkit Detection and Removal; A modularized AV-search engine for improved scan performance.
Free anti-virus CD
Trend's Free CD contains evaluation versions of all of Trend's virus protection products, from the desktop PCs to LAN servers to groupware and mail systems to the Internet gateway.
Trend's Free CD is available for corporate users only (International)
Malicious Software Removal Tool
The Microsoft Windows Malicious Software Removal Tool checks computers running 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.
Comodo AntiVirus elliminates all known viruses, worms and trojans from Windows computers. Features on-demand & on-access scanning, email scanning, process monitoring, worm blocker, scan scheduling and more. It's easy to use, will not slow down your PC and is free for life to the end user.
Clam AntiVirus is a GPL anti-virus toolkit for UNIX. The main purpose of this software is the integration with mail servers (attachment scanning). The package provides a flexible and scalable multi-threaded daemon, a command line scanner, and a tool for automatic updating via Internet. The programs are based on a shared library distributed with the Clam AntiVirus package, which you can use with your own software. Most importantly, the virus database is kept up to date.
Free avast! 4 Home Edition
avast! 4 Home Edition is a full-featured free antivirus package designed exclusively for home users and non-commercial use. Both of these conditions should be met!
Free online scanning tool from TrendMicro. You'll need to download the necessary files from their website before you can proceed.
Previously known as AntiVir PersonalEdition, PersonalEdition Classic protects
against viruses, worms, Trojan horses and spyware, including dialers. Yes it's a freeware.
BitDefender Online Scanner
BitDefender Online Scanner is a fully functional antivirus product. It features all required elements for thorough antivirus scanning and effective cleaning: it scans your system's memory, all files, folders and drives' boot sectors, providing you with the option to automatically clean the infected files.
up your PC with PC Pitstop for free
diagnose your hardware, hard disks, and Internet connection, and
to check your system for viruses. It then provides a summary report,
problems and tips for maximising your PC performance.
ActiveScan's is a free browser-based
tool that can find and remove over 55,000 viruses and Trojan horses.
Check your entire PC or specific folder or file. It easy to use
and unlike other service, its updated daily.