Compare the Top Free Computer Security Software as of November 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
    ManageEngine Endpoint Central
    ManageEngine Endpoint Central is built to secure the digital workplace while also giving IT teams complete control over their enterprise endpoints. It delivers a security-first approach by combining advanced endpoint protection with comprehensive management, allowing IT teams to manage the entire endpoint lifecycle, all from a single console. With automated patching across Windows, Mac, Linux and 1,000+ third-party applications, it ensures vulnerabilities are mitigated before attackers can exploit them. Its next-gen antivirus (NGAV) feature, powered by AI-driven behavioural detection, provides 24/7 protection against ransomware, malware, and zero-day threats. Endpoint Central further strengthens enterprise defenses with a broad set of security capabilities, including vulnerability assessment and mitigation, peripheral device control, data loss prevention, application control, endpoint privilege management, encryption with FileVault and BitLocker, and browser security.
    Starting Price: $795.00/one-time
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  • 2
    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.
  • 3
    Coro

    Coro

    Coro Cybersecurity

    Coro puts an end to the security tool sprawl and to the constant worry that things have been overlooked. No need to check everything 10 times a day. Coro will take care of the ongoing security, and will alert you only when you need to take action. Coro analyses the threats to your entire business, takes action to eliminate the risk, and guides you on what to do next to improve your security posture. Coro is the central control point for sensitive data, practice data, and user activity, enabling you to enforce a wide range of security, compliance and governance policies. We scan every email for phishing, malware, ransomware and automatically eliminate threats. We automatically identify and block insider threats, accounts hacking, and malicious activities. We scan every file and email, or any data share for PII/PCI/PHI, and prevent confidential information leakage.
    Starting Price: $8.99 per user per month
  • 4
    Apozy Airlock
    Apozy Airlock. The browser endpoint detection and response platform that neutralizes web attacks in one click. The Internet is a dangerous place. It doesn’t have to be. Airlock fills the gap in your EPP/EDR by protecting the browser, delivering a safe, clean, and lightning-fast internet experience. Powered by the very first visually-aware native browser isolation platform with over 6 petabytes of visual data, Airlock prevents web attacks in real time. Airlock stops spearfishing in its tracks. With a visual model database of over 67.83 billion pages which analyzes over 12.20 trillion links per year, our technology protects anyone clicking on a malicious link by sandboxing the threat.
    Starting Price: $9/month/user
  • 5
    Xeams

    Xeams

    Synametrics Technologies

    Xeams is, a secure and powerful complete mail server for Windows, Linux, Solaris, MacOSX and other flavors of UNIX. Xeams supports SMTP, POP3, and IMAP. It features a powerful spam filtering engine that eliminates up to 99% of junk email upon installation. The software offers a flexible approach to email, making it a very user-friendly server. Xeams can block 99% percent of all junk messages right out of the box. The filtering rules are fully customizable and get better as Xeams adapts to your email environment. IMAP and POP3 servers built right into the system to easily fetch emails from an email repository to a client's machine. Xeams can be used as an email firewall in front of another server, such as MS Exchange, or as a full email server requiring no other software to process emails. Use Xeams in front of your Office 365 infrastructure to gain additional filtering, reporting and archiving capabilities that you don't get with Office 365 alone.
    Starting Price: $20.00/year/user
  • 6
    Bitdefender Ultimate Small Business Security
    Bitdefender Small Business Security delivers enterprise-grade, layered cyber-protection designed specifically for small organizations. It covers Windows, macOS, iOS, and Android devices with centralized, easy-to-use management, so businesses without a dedicated IT staff can deploy and monitor security from one dashboard. Key features include multi-layered endpoint protection (machine learning, behavioral analytics, real-time monitoring, process termination, and rollback) to prevent known and unknown threats. It offers ransomware prevention and mitigation (detecting abnormal encryption attempts and restoring files from backups), fileless attack protection (memory/back-injection interference, script blocking), phishing & fraud prevention (blocking deceptive sites and warning users), and advanced exploit protection (real-time shield of browsers, Office apps, Adobe Reader) for comprehensive endpoint defense.
    Starting Price: $188.99 per month
  • 7
    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.
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