List of Free Computer Security System


The products are almost exclusively free with some exceptions: products where there is no free alternative, good products that offer a lifelong license, and exceptional products.

Please inform me for dead/false links, and give suggestions for new applications with the form located at the end of this list. I react to every correction and suggestion, although I may not answer all of them explicitely. This list is updated approximately twice a week, if needed. So, if your suggestion does not appear to the list immediately, it does not mean it has been omitted.

Realtime protection
Anti-virus:
Microsoft Security Essentials
Avira AntiVir
Panda cloudantivirus
AVG Anti-Virus
Fprot (with Returnil)
Ad-Aware
Spyware Doctor with antivirus
PC Tools Free AV
Preventon
Rising

Zillya
Nano
Kingsoft
Clam Sentinel

Anti-malware (Can be run alongside with an AV):
Prevx
Immunet
Clam Antivirus
Rising PC doctor
Hazard Shield
Windows Defender

Security suite (anti-virus, anti-malware and firewall):
Comodo
Forticlient

AV/AM trials:
Emsisoft (works as scanner after trial period)
Kaspersky
Avira
Nod32




Portable antivirus/antimalware (can be run with UBCD4Win)
Emsisoft Emergency USB Stick files Superantispyware
VIPRE Rescue
AVZ AVZ database
Norman malware cleaner

Trendmicro Sysclean
ClamWin portable



Anti-rootkit
Gmer
Kernel Detective
RootRepeal
SpyDllRemover
XueTr

VBA anti-rootkit
Sophos
Sanity check
Gmer: mbr-rootkit
Gmer: catchme (user-mode)
Rootkitty (boot cd)



Online-scanners

File scanning with several scanners:

Scanning of several zipped files:

Online-scanners:



Firewalls

Limited versions of commercial firewalls:
Outpost
Online Armor
Zonealarm


free Firewalls:
Comodo
PCTools
Sunbelt
Privatefirewall
Jetico
Iolo
Sotfperfect
Sygate
Webroot
NetVeda Safety.Net
Ashampoo
Filseclab
R

Simple firewall:
Ghostwall

Windows firewall:
XP firewall guide

Configuring XP firewall
Vista firewall guide
Vista firewall control
Windows 7 firewall control
Sphinx
Diagnose and fix Windows Firewall service problems

Gateways:
Endian
UntangleSmoothwall

Replacement for router firmware:
Tomato
DD-WRT

HIPS

Behaviour blocker:
ThreatFire

Classical strong HIPS:
Malware Defender
Comodo defence+
Spyware Terminator
Real time defender
System Safety Monitor

Classical lightweight HIPS:
Winpatrol
System shields
Arovax Shield (XP,V)

Startup monitoring:
Startup monitor



System hardening-HIPS

System & Program Files Protection:
System Protect

Prevent other users deleting files/folders:
Prevent

MBR protection:
MBRguard

Memory firewall:
Comodo memory firewall

Address space randomization:
WehnTrust

Prevention of drive-by-downloads:
Blade

Prevention of exploits in media files:
Quttera

USB-firewall:
No Autorun
USB protect
Net Studio USB FireWall
Ninja Pendisk!
Autorun Eater
MxOne
USB WriteProtector
USB Drive Antivirus

USB protection (other):
USBDummyProtect

Shutdown prevention:
Shutdownguard


Sandboxing-virtualization

Sandboxing (for browsers/IM/etc):
Sandboxie
GeSWall
Bufferzone
EdgeGuard Solo
Safespace
RTD Smart

System virtualization:
Returnil
Powershadow 2.6 (Key)
Virtual Protect
Wondershare time freeze

Rollback software:
Comodo time machine

Locked system :
Windows Steadystate (XP,V)

Desktop virtualization:
Mojopac
Icore

Virtual players:
VmWare player, VmWare converter, EasyVMX converter
moka5 live PC + Fearless Browser

Virtualization software:
VMWare
VirtualBox
VirtualPC
VMLite
VMToolkit

Online VM:
Spoon

Application virtualization:
Evalaze
Cameyo

Virtualized browser:
Inmunos
Dell Kace Safe Browse



Browser security

Anti-phishing/malware browser plugins:
WOT
Webutation
LinkExtend
McAfee Siteadvisor
PcTools Browserdefender
Norton Safeweb
Surfcanyon
Netcraft toolbar
Bitdefender anti-phishing
Sitehound
Web Security Guard
TrendProtect
Comodo Verification Engine

Real-time link scanning:
SmartScreen Filter (IE)
AVG Linkscanner

Finjan SecureBrowsingQualys

Manual link scanning:
VTzilla
Team cymry
UrlVoid
IPVoid
WebutationLinkScanner
Dr.Web plug-in
Unmask Parasites
Online link scan
vURL
Norton
Finjan
AVG
DrWeb
TrendMicro

Prevent Blackhat Search Engine Optimization:
Zscaler
Check the web trader:
Shopping assistant

Anti-phishing Firefox plugins:
IDND
ShowIP

Check real URL:
bit.ly preview
Untiny url
TrueURL
expandmyurl
longurlplease

Ad blocking:
Adblock Plus (blocklists)
Adsweep
Simple-adblock
TACO
AdblockIE
Adblocking for Chrome

Pop-up blockers:
PanicWare Pop-Up Stopper
EMS Free Surfer


Browsing without a trace:
Portable Firefox
Browzar



IP-blocking/hardening

Blocking connections to malware domains:

Blacklists for Explorer:
Spyware Blaster

Internet proxy+blacklist:
SquidGuard

Host File management:
Hostsman
HostsXpert
B.I.S.S. Host Manager

Host files (blocking malware and advertisements):
Hostfile
Hosts
Mvps

Other IP-block lists:
CoU IP blocklist updater (Outpost firewall, Online Armor)

Caching/filtering and blocking pseudo-DNS server:
DNSKong

Internal proxies:
Proxomitron + JD list
Sidki's Proxomitron config
IdnWebShield
BFilter
Polipo

External proxies:
Freecap
Socscap


local DNS proxy:
Acrylic

IP-blocking:
Peerblock
PeerGuardian 2

Parental control:
Norton Safety Minder
Windows Live Family Safety
Kidzui
K9 Web Protection
Parentalcontrolbar
Glubble
GoGoStat (Facebook)

Spam filters
SpamAssassin
SpamBayes
SpamCop
Spamihilator
SPAMfighter
Comodo Antispam
Mailwasher
Spam Manager
SpamFence






Facebook privacy
BitDefender safego
ReclaimPrivacy
Privacy Check
Openbook
Zesty
The (Very) Unofficial Facebook Privacy Guide
How to permanently delete your facebook account
How to block A Facebook stalker


Fake identity generator
Fakenamegenerator


Free VPN connection
Comodo Trust Connect login page info info2
Hotspot shield
CyberGhost
UltraVPN
Loki
It's Hidden
Jondo
USAip
PacketiX
VPN reactor
Free hide IP
ProXPN

Free online proxy
Xerosurf
Proxify
Vtunnel
Anonymouse
Ninjacloak
PimpMyIP
Zend2
Proxybrowsing
CSC


System monitoring

System monitoring and diagnostic:
System Explorer
System info for Windows (SIW)
What's Running
Change Analysis Diagnostic tool
EVEREST Home Edition
Anvir task manager
Fresh Diagnose
Multimon
Hijack Hunter

Hardware monitoring and diagnostics:
PC Wizard
Sisoft Sandra lite
Crystalmark
MKN PerformanceMonitor

Hardware, network and software inventory:
Lansweeper

Process/startup/etc scanners:
ProcessExplorer
DTaskManager
Glint
Process Hacker
Autorun Angel
Autoruns
Silent runners
Run Scanner
Startup control panel
Startup Guard
Autostart Explorer
Tizer
Ez-PC-fix
Atool
x-ray PC

Process/startup/etc scanners with analyzing help:
Eset SysInspector
RSIT

Sreng
HijackThis (help)
OLT
FreeFixer
Hijack Hunter
a2 HiJackFree
Security Task Manager
Runalyzer
Dart Bit
OSAM Autorun manager
Autorun Angel
ProcessQuickLink
Soluto

Realtime process monitoring:
Process monitor
ProcessActivityView
SpyMeTools

Monitor file system activity:
Malware Activity Watcher

Monitor hard disk activity:
What's my computer doing?

Monitor hard disk health:
Acronis Drive Monitor

Monitor memory:
MKN MemoryMonitor

Monitor USB-activity:
USBDeview
USB activity monitor

Monitor registry and file changes:
RegShot
SpyMeTools
RegFromApp
Installwatch
InstallSpy
SystemSherlock
NT Filemonitor


Monitor computer usage:
Blackbox

Detect packed drivers:
Mischel Packed Driver Detector

Searching files and processes:
fileresearchcenter
processlibrary
Bit9 fileadvisor
Sans institute
ViCheck
Team cymry

File Type Inspector:
TrID

Executable Inspection:
PEiD
Mandiant red curtain

Checksum calculation:
HashtabMd5summer
Hashcalc
FileVerifier++

Other:
How to verify the Integrity of Windows system files, (sfc /scannow)
How To Check System Files For Digital Signatures
Memory usage analysis: MEMMAP
Check injected DLLs
Monitor debug output: DebugView
Debugger for Windows: WinDbg
Monitor kernel object activity: ObjMon
Monitor files in your website automatically: Websites Cop
Svchost Process Analyzer



Network traffic monitoring

Port checking:
ActivePorts
TcpView
CurrPorts+IPNetInfo
Roadkil's Scan Port
Plax network suite

Botnet diagnosis:
Trendmicro RUBotted

Network traffic monitoring:
Networx
Netmeter
F-secure web trailNetwork lightsUrlsnooper
ProcNetMonitor

Network traffic analyzing:
Wireshark
NetworkMiner
Nmap
Cain & Abel
IpSniffer
Microsoft Network Monitor
Analyzer
Smartsniff

NIDS:
Snort
Bothunter

Control internet traffic priority:
NetBalancer

DNS-performance test:
GRC
Namebench

Internet speed test:
Speedtest

Ping:
Emco Ping Monitor

Other:
Protection against ARP poisoning
Securing wireless network



System cleaning
Versatile cleanup tool:
RegRun Reanimator
Virus effect remover

Process killing:
APT
KillProcess
ProcX

File shredders:
Eraser
UltraShredder
File Shredder

Wipe deleted files:
Prevent restore

Versatile tool for removing infection traces at bootup:
BlitzBlank
Threat Killer

Unlocking files:
Unlocker
LockHunter
Emco UnLock IT

File killing:
KillBox
Brute force uninstaller (guide)
FileASSASSIN
Avenger
Emco MoveOnBoot
Guide for killing files

Killing registry entries:
RegASSASSIN

Free locked files:
WhoLockMeTizer

Device&driver analyzing:
ServiWin
Pserv.cpl

Registry editing:
Registrar lite
Regalyzer
RegSearch

System cleaning:
Wise
CCleaner CCEnhancer
DiskMax
Comodo system cleaner
Easy Cleaner
RegSeeker
Tweaknow RegCleaner
ATF-Cleaner
CleanUP!
PureRa
FCleaner
KCleaner lite
Wipe
System Ninja

Maintenance & Optimization:
WinUtilities
Ashampoo WinOptimizer
Glary utilities
360Amigo

Memory optimizer:
Cleanmem

Collection of tools:
Mztweak
Ultimate Windows Tweaker

Alternate data streams:
StreamArmorADSSpy
Assasin G13

Shell extensions:
ShellExView

Tool for balancing process CPU:
Process lasso
Process tamer

Disk defragging
Auslogics disk defrag
Defraggler
WinContig
Puran defrag

Registry defragging:
PageDefrag

Uninstallers:
Revo uninstaller
Zsoft uninstaller
Add/Remove Pro
Install Rite
EMB uninstaller

Uninstall Programs Packaged with Windows Installer in Safe Mode
SafeMSI
Raymond cc

Tracking registry and files changes when installing software:
Many here

MRU-list deleting:
MRU-Blaster

Removing unwanted (preinstalled) Windows/software:
PC Decrapifier
Office 2007 remover
AV removal (many tools)
AppRemover
AV removal 2 (many tools)
Old versions of Java
Old versions of Flash
List of uninstallers



Data rescue

File rescuing from Usb-drive/hard disk:
PC Inspector File Recovery
Photorec
DiskDigger
Avira UnErase
Recuva
Easeus

File rescuing from memory cards:
PC Inspector smart recovery

Rescuing files from corrupted hard disk:
Unstoppable Copier
DataRescue's DD

Unstoppable copying:
TeraCopy

Versatile tool for coping files:
RichCopy

Rescuing files from broken CD/DVD:
IsoBuster
IsoPuzzle
CDcheck
Recovery Toolbox

Write error resistant DVD:s:
dvdisaster



Encrypting
Versatile tool for encrypting:
FREE CompuSec

Hiding files/folders:
My Lockbox
Easy file locker
Hidefolders
Free Hide Folder
MySecretFolder
FolderGuard

Encrypting files:
AxCrypt
DsCrypt
KGB archiver
Crypt4free
EncryptOnClick
Cryptainer LE
Androsa FileProtector  (portable)
ICE encrypt  (portable)

Password protect executables:
Empathy

Encrypted USB-stick:
Encrypt Stick
Rohos

Disk/drive encryption:
Comodo

Encrypting with virtual drives:
TrueCrypt
Secret disk
FreeOTFE
Safehouse Explorer

Encrypting for usb-drive:
Cryptainer LE
USB flash security
Rohos Mini
SecureStick

Steganography:
Hide in picture
Bon Kuy Bon
Steghide
DIIT
Invisible secrects
Guide1
Guide2


Online-disk:
Mozy
Adrive
IdriveDropbox
Memopal
Gmail Drive shell extension
Skydrive explorer (Windows Live)
Filesanywhere
more on achoshare


System rescue

Repairing XP:
Recovering Windows XP using the Recovery Console
How to install and use the Windows XP Recovery Console
Repair XP
How to Perform a Windows XP Repair Install

Windows Vista resque disks:
Neosmart

Windows 7 resque disks/USBs:
Neosmart
Raymondcc

Versatile tool for trobleshooting:
Microsoft fix it center
Techtoolkit

Resque disks:
UBCD4win
Trinity
BartPE
BootDisk
UBCD
Omega
Norton Bootable Recovery Tool
Hiren's boot cd
OTLPEStd

Portable OS:
Ubuntu linux
KNOS

Linux live CD:
LinuxMint
Puppy
Simply Mepis
Slax
Ubuntu
PCLinuxOS
Webconverger

Partition recovery:
Testdisk
Minitool

Partition software:
Easeus
MInitool
Paragon
Gparted

Boot-CD registry editor:
PC regedit

Rescuing and troubleshooting:
Paragon Resque Kit
Memtest86+
Sisoft
SystemResqueCD
Shockfamily Knoppix
BSOD survival guide

Boot, resque, partitioning etc.
Parted Magic
Easeus

Fixing MBR:
Fixing MBR with Boot-CD
another
Fixing MBR

Disk recovery(data, partition, boot sector):
TesktDisk
Partition Find & Mount

Make bootable linux USB:
UBootNetin
LiLi
Privatix Live-System

Make bootable Windows USB:
A bootable USB
WintoFlash

Recover a hanging system:
Antifreeze

Solve problem drivers:
Bluescreenview
Whocrashed

Repairing of broken internet connection:
Winsockxpfix
Winsockfix
Lspfix
Autodebug for Winsock
Repairing of broken internet connection (V)
Network test tool

Restore Corrupted Folder Options and Advanced Settings:
Tool 1

Tool 2
Fix corrupted .exe association another
Fixpolicies
XP Quick Fix Plus
Dial-aFix
Computer Repair utility kit
Eable booting in safe mode
Turn off “Autorun” and “Default Share” download

Windows reinstall guides:
How to Rebuild your Computer
Windows reinstall
Install, reinstall, or uninstall Windows
installing windows xp from a usb key

Recover installations keys:
The Magical Jelly Bean Keyfinder
Recover Windows key for unbootable system
Retrieve the Software Installation Keys
ProduKey

Recover/reset Windows passwords:
boot cd for reseting windows passwords
How to reset windows account passwordHow to recover Windows password
Cain&Able
Ophcrack
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1 comment:

John said...

I recommend Digeus Registry Cleaner as it is the best know on the market. It finds and fixes far more errors in the systen than any other. I run it every time when my computer starts crashing or working slow.