Compare the Top Free Cybersecurity Software as of January 2026

What is Free Cybersecurity Software?

Cybersecurity software is a category of technology used to protect computers and networks from malicious attacks. It operates by monitoring activity and blocking suspicious activity, as well as providing advanced security features such as encryption and authentication. It's an important tool for businesses to help ensure the safety of their data and systems. Compare and read user reviews of the best Free Cybersecurity software currently available using the table below. This list is updated regularly.

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    Criminal IP

    Criminal IP

    AI SPERA

    Criminal IP is a comprehensive threat intelligence search engine that detects vulnerabilities of personal and corporate cyber assets in real time and facilitates preemptive responses accordingly. Originated from the idea that individuals and corporations would be able to strengthen their cyber security by proactively acquiring information about IP addresses attempting to access your network, Criminal IP uses its big data of more than 4.2 billion IP addresses to provide threat-relevant information on malicious IPs and links, phishing sites, certificates, industrial control systems, IoTs, servers, security cameras, and so forth. With Criminal IP’s 4 main features (Asset Search, Domain Search, Exploit Search, and Image Search), you can find IP risk scores and related vulnerabilities of searched IP addresses and domains, details on the exploit codes for each service, and assets that are left wide open to cyber threats in the form of images respectively.
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    Starting Price: $0/month
  • 2
    FireMon

    FireMon

    FireMon

    Maintaining a strong security and compliance posture requires comprehensive visibility across your entire network. See how you can gain real-time visibility and control over your complex hybrid network infrastructure, policies and risk. Security Manager provides real-time visibility, control, and management for network security devices across hybrid cloud environments from a single pane of glass. Security Manager provides automated compliance assessment capabilities that help you validate configuration requirements and alert you when violations occur. Whether you need audit reports ready out-of-the-box or customizable reports tailored to your unique requirements, Security Manager reduces the time you spend configuring policies and gives you the confidence that you’re ready to meet your regulatory or internal compliance audit demands.
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