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
    Google Chrome Enterprise
    Chrome Enterprise is a suite of business offerings that includes Chrome browser, Chrome's cloud management tool Chrome Enterprise Core, and the advanced security capabilities in Chrome Enterprise Premium. Chrome offers a dedicated enterprise download bundle, giving admins access to additional resources and policy templates for managing Chrome across desktop environments in their organization. Chrome Enterprise Core provides admins with simple, centralized management from the cloud. It allows admins to manage their enterprise browser deployment across platforms all from the same place. Chrome Enterprise Premium enables secure access to applications and resources, and offers integrated threat and data protection in the browser. It adds an extra layer of security to safeguard your Chrome browser environment, including DLP, real-time URL and file scanning, and context aware access for SaaS and web apps.
    Starting Price: Free
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  • 2
    ShieldApps Cyber Privacy Suite
    What you do online and on your computer should be your own business. Yet, in most cases, your personal information & web habits are being tracked constantly by 3rd parties who want to monetize your online behaviors or steal your identity. It takes powerful software to stave off malicious cyber attacks all day, every day. In our increasingly digital world, anyone is an easy target for a cyber attack. We put so much of our personal information online today, making it harder to guard against malicious hacking attempts. Our comprehensive software keeps you and your family safe at all times when using your devices or surfing the web. Cyber Privacy Suite fends off harmful privacy threats and proactively identifies where your information is vulnerable or exposed.
    Starting Price: $77.90 per 3 devices
  • 3
    iBoostUp

    iBoostUp

    iBoostUp

    iBoostUp is a powerful Mac optimization tool with a strong emphasis on security. Security features include Spyware Doctor, which uses both cloud-based signature scanning and advanced heuristic techniques to detect malicious apps, and HID Implant Guard, which alerts and protects against modified peripherals like USB drives or Lightning cables that could compromise your Mac. BoostUp also provides a behavioral Keylogger Guard, n ARP Cache Poisoning Detector to scan for suspicious network activity, an Application Uninstaller to remove all traces of uninstalled apps, and a Duplicate File Finder to free up disk space by removing identical content files. All in all, iBoostUp is an ideal tool for Mac users who want to optimize their system's performance and safeguard their privacy and security against various types of threats. We are not affiliated with Symantec Corporation, Norton, iAntiVirus, or PC Tools, but was instead founded by ex-employees with a wealth of expertise in this field.
    Starting Price: $0
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