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
    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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  • 3
    ActivTrak

    ActivTrak

    Birch Grove Software

    ActivTrak helps enterprises drive operational efficiency through AI-powered workforce intelligence. Its award-winning platform transforms work activity data into actionable insights for workforce management, workforce productivity and workforce planning — enabling measurable ROI and stronger business outcomes. More than 9,500 organizations trust ActivTrak's technology, recognized by Deloitte's Technology Fast 500, Inc. 5000, TrustRadius, and G2. Backed by Sapphire Ventures and Elsewhere Partners, ActivTrak leads the way in privacy-first workforce data that fuels the future of intelligent work.
    Starting Price: $10/user/month billed annually
  • 4
    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.
  • 5
    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
  • 6
    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
  • 7
    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
  • 8
    Bacula Enterprise

    Bacula Enterprise

    Bacula Systems

    Bacula Enterprise delivers Physical, Virtual, Container and Hybrid Cloud Backup & Recovery software for the Modern Data Center - all from a single platform. Designed for medium and large organizations, Bacula Enterprise backup and recovery software brings unique innovation, modern architecture, business value benefits and low cost of ownership. Bacula Enterprise corporate data backup software solution uses exclusive technologies that increase the interoperability, power, flexibility and functionality of Bacula Enterprise into a wide range of IT environments such as enterprise data centers, managed service providers, software vendors or cloud providers. Thousands of organizations worldwide use Bacula Enterprise in mission-critical environments, including NASA, Texas A&M University, Unicredit, Swisscom, Sky, and many more. Bacula provides additional security features over other vendors and offers advanced, hybrid Cloud connectivity to Amazon, S3, Google, Oracle and many more.
  • 9
    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
  • 10
    Bitdefender Antivirus Free
    Bitdefender Free Antivirus offers industry-leading protection against viruses, malware, and online threats—completely free of charge. Built for simplicity and performance, it shields your devices without slowing them down or interrupting your work. With automatic scans, real-time threat detection, and no hidden costs, users enjoy total peace of mind. It detects ransomware, phishing, rootkits, Trojans, and malicious downloads using advanced behavioral analysis. Designed for Windows, macOS, Android, and iOS, it ensures cross-platform security with minimal setup required. Bitdefender’s award-winning technology brings top-tier cybersecurity to everyone—no credit card, no trial limits, just pure protection.
    Starting Price: Free
  • 11
    Trend Micro HouseCall
    The best free online virus scanner that you can get to identify hidden threats on your PC and Mac. Discover if your files are safe and block malicious software hidden outside of files. Threats can harm your device before you realize there is a problem. Use HouseCall to get your device back to normal. With the detailed report, you can see what threats have targeted your device and take quick action. With HouseCall, you can choose which scan to run, quick or full. You can even create a custom scan. Detect and fix viruses, worms, spyware, and other malicious threats for free. HouseCall can quickly find new threats on your Windows or Mac computer for free without getting in the way of your existing security software. You can count on HouseCall to keep malicious files off your device and stop them from spreading. HouseCall for Home Networks scans all of your home network devices for vulnerabilities and recommends how to eliminate them.
    Starting Price: Free
  • 12
    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
  • 13
    Protectstar Camera Guard
    Put an end to spying and unsightly taping. Not only millions of users but also the founder of Facebook, Mark Zuckerberg, and former FBI chief James Comey are taping over the webcam of their devices. Everything and everyone is being spied on. We have known this since June 2013, when the first NSA documents by whistleblower Edward Snowden were published. But not only hackers found ways to misuse the webcam without a warning signal to the user: Also, the latest malware is highly dangerous because it specifically targets control of the integrated device camera. Then, with just one click, protection is enabled, and Camera Guard blocks and monitors processes that try to access your device's camera. Any security breach is reported. You can easily choose which apps on your device can access your camera or webcam. With Deep Detective, we have created an intelligent and versatile detective that monitors all accesses of the macOS device.
    Starting Price: $8.90 per year
  • 14
    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
  • 15
    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.
  • 16
    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.
  • 17
    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.
  • 18
    Bitdefender TrafficLight
    It is a free cross-browser add-on that intercepts, processes, and filters all Web traffic, blocking any malicious content and taking browser security to new levels. Never worry about suspicious websites again! TrafficLight examines and blocks the pages you visit for malware and phishing attempts each and every time you access them. Safe search results keep you out of harm's way. With Bitdefender TrafficLight, you will be always informed about malware and fraudulent websites within your search results.
    Starting Price: Free
  • 19
    Votiro

    Votiro

    Votiro

    The only file security solution that ensures all files coming into your enterprise are completely safe. Unlike detection-based file security solutions that scan for suspicious elements and block files, Positive Selection singles out only the safe elements of each file, ensuring every file that enters your organization is 100% safe. Any file, anywhere, anytime. With a deep, expert understanding of all types of files, Votiro’s Secure File Gateway eliminates threats from the widest possible range of files, no matter how they enter your organization.
  • 20
    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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