Top free security tools
The 10 Best Free Security Tools,
103 Free Security Apps for Mac, Windows and Linux
103 Free Security Apps for Mac, Windows and Linux
Spyware
Ad-Aware SE Personal [Windows]
Spyware Terminator [Windows]
Spybot - Search & Destory [Windows]
Winpooch [Windows]
SpywareBlaster [Windows]
Bazooka Adware and Spyware Scanner [Windows]
Windows Defender [Windows]
MalWhere [Windows]
Trend Micro Anti-Spyware for the Web [Web: Windows]
Zebra scanner [Mac]
Antivirus
McAfee AVERT Stinger [Windows]
PC Tools AntiVirus [Windows]
Clam AntiVirus [Linux]
AVScan [Linux]
ClamXav [Mac]
AVG Anti-Virus [Windows, Linux]
Avast Home Edition [Windows, Linux]
Housecall [Web: Windows, Linux, Mac]
Symantec Security Check [Web]
Rootkit
Sophos Anti-Rootkit [Windows]
Rootkit Hunter [Mac]
chkrootkit [Linux]
Firewall
ZoneAlarm [Windows]
VisualZone [Windows]
PC Tools Firewall Plus [Windows]
Firestarter [Linux]
Firewall Builder [Linux]
TuxGuardian [Linux]
HardWall Firewall [Linux]
BullDog [Linux]
PeerGuardian [Windows, Linux, Mac]
Thunderbird [Windows, Linux, Mac]
Smart sendmail filters [Linux]
Sagator [Linux]
Tiger Envelopes [Windows, Linux, Mac]
Web Utility
WinSCP [Windows]
Privacy Mantra [Windows]
Tor [Windows, Linux, Mac]
BarracudaDrive [Windows, Linux, Mac]
Firefox [Windows, Linux, Mac]
McAfee Site Advisor [Windows, Linux, Mac]
Opera [Windows, Linux, Mac]
PuTTY [Windows, Linux]
WebCleaner [Linux]
Cyberduck [Mac]
Network
SoftPerfect Network Scanner [Windows]
SecureRDP [Windows]
Colasoft Packet Player [Windows]
DomainScan Light [Windows]
SmoothWall [Linux]
Nagios [Linux]
nLive Core [Linux]
Network Mapper [Windows, Linux, Mac]
Wireshark [Windows, Linux, Mac]
Nessus [Windows, Linux, Mac]
dSniff Control [Mac]
Flame [Mac]
Server Admin Tools [Mac]
Intrusion Detection System
Snort [Windows, Linux, Mac]
HenWen [Mac]
Open Source Host-based Intrusion Detection System [Windows, Linux, Mac]
Prelude [Linux]
Virtual Private Network
SSL-Explorer [Windows, Linux, Mac]
OpenVPN [Windows, Linux, Mac] – Popular VPN solution specializing in remote access.
IPSecuritas [Mac] – IPsec based VPN allowing you to transfer secure data remotely.
strongSwan [Linux] – IPsec based VPN using multiple encryption methods.
Temporary Files
HijackThis [Windows]
Zappit System Cleaner [Windows]
CCleaner [Windows]
WinXPatch [Windows]
Advanced WindowsCare v2 Personal [Windows]
EasyCleaner [Windows]
CleanCache [Windows]
xpy [Windows]
Cookie Eraser [Windows]
Wireless
Kismet [Linux, Mac]
AirSnare [Windows]
myWIFIzone [Windows]
iOpus Private Internet Gateway [Windows]
LucidLink WiFi Client [Windows]
AirTrafficControl [Mac]
Encryption
Pastor [Mac]
Access Manager [Windows]
RememberMe [Windows]
Kruptos 2 [Windows]
Crypt4Free [Windows]
PicSecret [Web, Mac]
GNU Privacy Guard [Windows, Linux, Mac]
TrueCrypt [Windows, Linux]
Via itsecurity.com
