Software anti virus

AVG Free – antivirus

Avast Home Free – antivirus

AntiVir PersonalEdition – antivirus

BitDefender Free – antivirus

ClamWin – antivirus

CyberDifender – Internet Security Suite

Ad-aware – anti-spyware

Spybot: Search & Destroy – anti-spyware

Windows Defender – anti-spyware

SpywareBlaster – anti-spyware

Spyware Terminator – anti-spyware

Tootkit Reveaker – rootkit detection utility

Winpooch – system protection

HiJack Free – system protection

HighJackThis – hijackers detector and remover

Kerio Personal Firewall – firewall

Sygate Personal Firewall – firewall

ZoneAlarm – firewall

AxCrypt – file encryption

Simple File Shredder – securely delete files

PuTTy – SSH client

KeePass – password manager

LockNote – password manager

nPassword – password manager

Microsoft Baseline Security Analyzer – identify security misconfigurations