Browse 26 free Security programs for Windows. Programs are listed by popularity. All installers come directly from publishers.
AVG Internet Security is an antivirus suite from Gen Digital, the same company behind Avast. In fact, AVG and Avast use the same virus detection engin
ESET Smart Security Premium is a paid security suite that bundles antivirus, firewall, password manager, file encryption, and anti theft into a single
Advanced SystemCare Ultimate is a system optimization suite from IObit that bundles a junk file cleaner, registry fixer, startup optimizer, and perfor
Bitdefender Antivirus is a security program that protects Windows computers against viruses, ransomware, phishing attacks, and network threats using a
avast! 4 Server Edition was antivirus software designed for Windows server environments, covering Windows NT 4.0 through Windows Server 2003. Publishe
Avira Free Security is a free antivirus by Avira, which is now part of Gen Digital (the same company that owns Norton and Avast). Beyond the standard
AVG AntiVirus FREE is a free antivirus by Gen Digital (the company behind Norton and Avast). Under the hood, it runs the same malware detection engine
McAfee AntiVirus is a security suite that protects Windows computers against viruses, ransomware, spyware and phishing attacks with real time scanning
Kaspersky Internet Security is an antivirus suite that combines real time malware protection with a firewall, anti-phishing engine, and a secure brows
Panda Dome Essential is an antivirus from WatchGuard/Panda Security, a Spanish company. It includes real time protection, a firewall, a VPN with a 150
Windows Defender (now called Windows Security) is the built in antivirus and security suite included with every Windows installation. It provides real
UsbFix is a security tool by SOSVirus that scans USB drives for malware, removes autorun infections, and vaccinates removable media against future thr
Malwarebytes is an anti malware tool by Malwarebytes Inc. that scans for and removes malware, ransomware, and potentially unwanted programs. The free
Avira Free Antivirus is a free security solution that combines traditional signature-based detection with cloud scanning technology. When Avira encoun
AdwCleaner is a free malware removal tool now owned by Malwarebytes. It targets adware, browser hijackers, unwanted toolbars, and PUPs (potentially un
Spyware Terminator was an anti-spyware tool that scanned Windows for spyware, adware, trojans, and other malicious software. It offered real time prot
Comodo Firewall is a free network security tool by Comodo Group that monitors and controls incoming and outgoing network traffic on your PC. It includ
ESET NOD32 Antivirus is a paid antivirus by ESET, a security company based in Slovakia. It costs around $40 per year for one device and comes with a 3
Kaspersky Anti-Virus (now rebranded as Kaspersky Standard) is a paid antivirus by Kaspersky Lab, a Russian security company. It costs around $40 per y
IObit Malware Fighter is an anti malware tool by IObit that scans for and removes malware, ransomware, and spyware. The free version uses IObit's own
Norton AntiVirus is a paid security product by Gen Digital (formerly NortonLifeLock, which also owns Avast, AVG, Avira, and CCleaner). The cheapest pl
Panda Free Antivirus (also known as Panda Dome) is a cloud based antivirus for Windows that offloads most threat analysis to remote servers, keeping l
Avast Free Antivirus is a free antivirus for Windows, Mac, and mobile. It is made by a Czech company now owned by Gen Digital (the same group behind N
Dr.Web CureIt! is a free, portable antivirus scanner from Doctor Web. It does not install on your system and does not provide real time protection. In
Avast Premium Security is a paid antivirus suite from Gen Digital (which also owns AVG, Avira, and CCleaner). It scored 99.98% detection rate in AV-Co
SpyBot - Search & Destroy is an anti-spyware scanner that detects and removes spyware, adware, tracking cookies, and other unwanted software. It has b