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Antivirus Software

Desktop Clients
• AVG Anti-Virus Free
• Alwil avast! Home Edition
• Avira AntiVir PersonalEdition Classic
• Comodo Antivirus
• Free for one year: CA Anti-Virus (Note: From CA's homepage you'll only get a 30-day trial. Use this link to get a one-year trial.)

Online-Only Virus Scanners
• Trend Micro HouseCall
• Kaspersky Free Virus Scan
• Microsoft Windows Live OneCare Safety Scanner
• Symantec Virus Detection
• McAfee FreeScan
• Panda ActiveScan
• BitDefender Online Scanner

Targeted Virus Removal Tools
• McAfee AVERT Stinger
• Microsoft Malicious Software Removal Tool
• Alwil avast! Virus Cleaner
• Symantec Removal Tools - These remove individual viruses.

Spyware/Adware Removal Tools

• Microsoft Windows Defender
• Lavasoft Ad-Aware SE Personal
• Spybot Search & Destroy
• Bazooka Adware & Spyware Scanner - Lightning fast scans (gives manual removal instructions).

Crapware Diagnosis and Startup Managers
• Merijn HijackThis - Highly recommended, but be careful what you do in this program.
• Nirsoft StartupRun - Standalone program which lets you view and disable startup apps. Similar to the Windows msconfig app, but offers more information.

Firewalls

• Comodo Free Firewall
• Check Point ZoneAlarm
• Enable Windows XP's built-in firewall: Microsoft: Understanding Windows Firewall

Spam Filters

• POPFile - Learns from your personal classifications and becomes more hands-off the longer you use it.
• SpamBayes
• Update for Outlook 2003 Junk E-mail Filter - Updates the Outlook 2003 junk email definitions (just install the latest update from the list, or get it via the Microsoft Update site).

Misc. Tools

Web Browsers
• Microsoft Windows Internet Explorer 7
• Mozilla Firefox
• Opera

Common Dependencies
• Sun Java
• Microsoft Visual Basic 6.0 SP6 Run-times - Some programs (e.g., HijackThis) require these files
• Microsoft Windows Media Player

Windows service pack full downloads (for network installation, etc.)
Note: For much more compact downloads, use the Microsoft Update site to install service packs.
• Windows XP Service Pack 2
• Windows 2000 Service Pack 4

Best Security Freeware - virus, spyware, spam removal, etc.

SpywareBlaster and SpywareGuard are by JavaCool and both are free programs. SpywareBlaster will prevent spyware from being installed and consumes no system resources. SpywareGuard offers realtime protection from spyware installation attempts.

More info and download is available at:
SpywareBlaster: SpywareBlaster
SpywareGuard: http://www.wilderssecurity.net/spywareguard.html


IE/Spyad places over 4000 websites and domains in the IE Restricted list which will severely impair attempts to infect your system. It is free.

More info and download is available at:
IE/Spyad: http://www.staff.uiuc.edu/~ehowes/resource.htm