Compare the Top Free Computer Security Software as of May 2025

What is Free Computer Security Software?

Computer security software helps protect devices, networks, and sensitive data from unauthorized access, cyberattacks, and other security threats. These tools provide a range of protective features such as antivirus, firewall, encryption, malware detection, and intrusion prevention systems. Computer security software is essential for safeguarding against viruses, ransomware, spyware, and phishing attacks, ensuring the integrity, confidentiality, and availability of data. Many security solutions also offer real-time monitoring, automated updates, and threat intelligence to detect and mitigate new vulnerabilities as they emerge. Businesses and individuals rely on computer security software to reduce risks, comply with regulations, and maintain a secure computing environment. Compare and read user reviews of the best Free Computer Security software currently available using the table below. This list is updated regularly.

  • 1
    GlassWire

    GlassWire

    GlassWire

    Instantly see who or what your PC is talking to on GlassWire's network monitoring graph, plus see what your PC may have connected to in the past. Detect spyware, malware, badly behaving apps, and bandwidth hogs, then block their connections. Monitor other PCs on your network and get alerted when new unknown devices join your WiFi. GlassWire warns you of network related changes to your PC, or unusual changes to your apps that could indicate malware. GlassWire offer a Consumer Solution and a Business solution, to suit the needs of both personal users and IT professionals. Among the features: Real-Time Monitoring to keep an eye on active and past network activity Threat. Threat Detection. GlassWire's built-in firewall detects and blocks potential threats. Application Tracking to Identify which applications are using your network and track their usage patterns. Bandwidth Usage, to stay informed about data consumption, And many more!
    Starting Price: $35.88/year/user
  • 2
    ActivTrak

    ActivTrak

    Birch Grove Software

    ActivTrak’s workforce intelligence platform transforms work activity data into actionable insights to optimize performance management and boost business productivity. Unlike traditional employee monitoring tools, ActivTrak is the only complete solution with employee monitoring, productivity and performance management, and workforce planning capabilities that deliver measurable ROI in just weeks. Key differentiators include: - Enterprise-class scale to accelerate time-to-value - Employee-centric approach to ensure data privacy - AI-powered insights to help prioritize actions - Best-in-class expertise to optimize outcomes
    Starting Price: $10/user/month billed annually
  • 3
    Threatcop

    Threatcop

    Threatcop

    Threatcop is a cyber security simulator and awareness tool that launches dummy cyber attacks on employees followed with awareness modules and gamified assessment. It simulates and imparts customized awareness based on top 6 attack vectors namely Phishing, Ransomware, Vishing, SMiShing, Cyber Scam and Removable Media. It compares the pre and post cybersecurity awareness levels of employees and provides a comprehensive report on individual user awareness as 'Employee Vulnerability Score (EVS)'. The awareness videos, advisories, newsletters and gamified quiz are customized with respect to the EVS score, thus, ensuring cyber resilience. It is a complete suite for your employees' cyber security awareness.
  • 4
    TunnelBear

    TunnelBear

    TunnelBear

    A more secure way to browse the web. TunnelBear encrypts your internet connection to keep your online activity private on any network. Just open the TunnelBear app, select a country, and flip the switch. Once you're connected, TunnelBear will work quietly in the background to keep your data secure. Hackers can steal passwords and data over insecure public WiFi. TunnelBear blocks them to keep you secure. Network owners and internet providers can see everything you do online. With TunnelBear on, they can't see a thing. Some content is only available in certain regions. TunnelBear changes your virtual location so you can see it anywhere. Ad services use your IP address to track your behavior across sites. TunnelBear stops them by assigning you a new IP. Some governments block popular websites and apps. TunnelBear unblocks them by changing your virtual location.
    Starting Price: $59.88/year/user
  • 5
    Security Score
    OPSWAT Security Score helps you identify weaknesses in your computer security system and fix security issues that leave you vulnerable to cyber-attacks. 1. Download our free OPSWAT Security Score app and click on it to run. No installation is required! 2. Get Your Security Score and Identify Risks 3. Fix Your Security Issues
    Starting Price: $0
  • 6
    VyprVPN

    VyprVPN

    Golden Frog

    Save 44% when you sign up now. Connect in a single click to enjoy privacy, peace of mind and unrestricted internet access. A VPN works by encrypting your internet connection to secure it and protect your privacy every time you go online. VyprVPN was founded in response to governmental surveillance, and our strong encryption keeps your information safe from hackers, identity theft and malware. It stops your ISP from tracking your every move and prevents advertisers from collecting and selling your valuable data. Break free from censorship with VyprVPN. Change your IP address to mask your location and escape internet restrictions imparted by governments, workplaces and organizations. Our obfuscated servers conceals your identity, protecting your traffic from leaking to your ISP’s DNS servers. Whether you’re lounging at home watching Netflix or using public wi-fi at a coffee shop, VyprVPN has an app for you. Use VyprVPN on all your devices to stay protected and connected 24/7.
    Starting Price: $5 per month
  • 7
    CWIS Antivirus Scanner

    CWIS Antivirus Scanner

    Cobweb Security

    We ensure 100% protection for your website by providing 24/7 security monitoring. If any hackers attack or virus injection occurs, we will clean and repair your website instantly. 24/7/365 monitoring of your website in our situation room. If an attack occurs, our software engineers will get an instant notification and protect, clean (if needed) and fix your website in the shortest possible time. Website clean-up and repair within 12 hours. Reports & Alerts via email. 24/7 Technical support. With CWIS Premium, you will get the best protection at the most reasonable price. You will receive recommendations for security hardening.
  • 8
    SpyShelter

    SpyShelter

    SpyShelter

    SpyShelter Anti Keylogger monitors behavior of all currently ongoing actions on your PC and allows you to prevent any action that malware attempts to make. Thanks to our unique technology, SpyShelter is capable of stopping both commercial and custom-made keyloggers, which cannot be detected by any anti-virus software. Since SpyShelter does not rely on any fingerprint database, you will not have to worry about zero-day malware – your registry, RAM and all applications are going to be protected from the moment you install SpyShelter. Compared to other security software, SpyShelter’s fast algorithm processing does not slow your computer down, making it suitable even for older computers. SpyShelter Anti Keylogger provides solid protection in real time against known and unknown “zero-day” spy and monitoring software, for example: keyloggers, screen loggers, webcam loggers, and even advanced financial malware.
    Starting Price: $25 per year
  • 9
    Cofense PhishMe
    Your employees need to be conditioned to spot and report phishing emails immediately. With Cofense PhishMe™, simulations are based on the latest threats known to bypass SEGs, empowering your users to become human threat detectors. With resilient users attuned to the latest phishing threats, you have the best organizational defense. Cofense PhishMe Playbooks let you configure a full 12-month program, complete with phishing simulation scenarios, landing pages, attachments, and educational content, in just a few clicks. Our Smart Suggest capability uses advanced algorithms and embedded best practices to recommend scenarios based on current active threats, industry relevance, and your program’s history. The most important part of your phishing defense is reporting and resiliency rates. Boost reporting and help users become active defenders with Cofense Reporter™, our one-click reporting button.
  • 10
    BlueFiles

    BlueFiles

    Forecomm

    How do you do today when you need to quickly send a confidential file or email to a customer, partner, or employee outside of your company, outside the secure network? CNIL strongly advises businesses and organizations to " use data encryption during transfers " and " have people trained in the risks ". Data encryption is a central part of the modern data protection strategy. Using specialized encryption, like BlueFiles, companies can encode their data so that it becomes indecipherable to anyone but the intended recipient. BlueFiles provides a real guarantee on all your digital data transfers: Integrity of the BlueFiles file, 100% confidentiality, remote control of the files sent, and tracking. Save time, ease of use, and lower costs, we need to communicate with confidence over the Internet without the risk of our sensitive data being disclosed. Under the GDPR law, companies must take steps to encrypt their personal data flows or face high fines.
  • 11
    BeyondTrust Password Safe
    Discover, manage, audit, and monitor privileged accounts of all types. Scan, identify and profile all assets and applications with auto-onboarding of privileged accounts. Store, manage and rotate privileged account passwords, eliminating embedded credentials and ensuring password strength. Log and monitor all privileged credential activity and sessions for compliance and forensic review. Use Password Safe to get finely-tuned and automatic password management and privilege approval controls, detailed session management (including real-time monitoring), and all the audit trail information and forensics needed to meet compliance requirements. Automatically discover and onboard accounts. Store, manage and rotate privileged passwords, eliminating embedded credentials in scripts and code. Log and monitor all privileged credential activity and sessions for compliance and forensic review.
  • 12
    RollBack Rx Pro

    RollBack Rx Pro

    Horizon Datasys

    RollBack Rx Professional is an instant time machine for your PC. A comprehensive Windows System Restore solution that empowers users and IT administrators to easily restore their PCs to any previous state within seconds. RollBack Rx Professional offers a fresh approach to managing PCs. Any unforeseen incidents such as user errors, viruses, or even botched software installations can be easily and absolutely reversed in a fast and efficient way. Most backup techniques (ex. imaging) are static and time-intensive. So arduous is this task, that even disciplined IT shops seldom get around to making regular backups. And if a disaster were to happen, depending on how long ago the backup was taken directly determines the amount of data loss. In today’s computing environment 98% of PC disasters are micro-disaster (malware, botched Windows updates, software installations, etc.).
    Starting Price: $69 one-time payment
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