Free Alternatives: Security Software & Testing

Best free Antivirus Software compared: Microsoft Defender Antivirus, Bitdefender Antivirus Free, Avast Free Antivirus, Avira Free Security and 2 more, with free-plan limits, platforms and prices from official pages checked October 23, 2026.

Best free Phone Trackers compared: Apple Find My, Google Find Hub, Life360, Google Family Link and 2 more, with free-plan limits, platforms and prices from official pages checked October 24, 2026.

Best free Malware Removal Tools compared: Malwarebytes, Microsoft Defender Antivirus, Bitdefender Antivirus Free, Avast Free Antivirus and 2 more, with free-plan limits, platforms and prices from official pages checked October 23, 2026.

Best free Network Scanners compared: Nmap, Angry IP Scanner, Advanced IP Scanner, Greenbone (OpenVAS) and 2 more, with free-plan limits, platforms and prices from official pages checked October 24, 2026.

Best open-source Firewalls compared: OPNsense, pfSense Community Edition, OpenWrt, OpenSnitch and 2 more, with licenses, platforms and prices from official pages checked October 23, 2026.

Best free Firewalls compared: Windows Firewall, UFW (Uncomplicated Firewall), simplewall, Portmaster and 4 more, with free-plan limits, platforms and prices from official pages checked October 24, 2026.

Best open-source Antivirus Tools compared: ClamAV, ClamTk, YARA, Wazuh and 2 more, with licenses, platforms and prices from official pages checked October 24, 2026.

Malwarebytes alternatives: Microsoft Defender Antivirus, ClamAV, Bitdefender Antivirus Free and 2 more. Prices and licenses checked October 23, 2026.

SonarQube alternatives: Semgrep, Codacy, DeepSource, Snyk and 1 more. Prices and licenses checked October 22, 2026.

CrowdStrike Falcon alternatives: Wazuh, Velociraptor, osquery, LimaCharlie and 3 more. Prices and licenses checked October 25, 2026.

Wireshark alternatives: tcpdump, Zeek, Suricata, ntopng and 1 more. Prices and licenses checked October 25, 2026.

Burp Suite alternatives: ZAP, OpenTRAP, Caido, mitmproxy and 2 more. Prices and licenses checked October 28, 2026.

McAfee alternatives: Microsoft Defender Antivirus, Bitdefender Antivirus Free and 4 more. Prices and licenses checked October 25, 2026.

Snyk alternatives: Semgrep, SonarQube, GitHub CodeQL code scanning, Trivy and 2 more. Prices and licenses checked October 25, 2026.

Bitdefender Total Security alternatives: Microsoft Defender Antivirus, ClamAV and 3 more. Prices and licenses checked October 25, 2026.

Kaspersky alternatives: Microsoft Defender Antivirus, Avast Free Antivirus, ClamAV, Malwarebytes and 1 more. Prices and licenses checked October 25, 2026.

Norton 360 Deluxe alternatives: Microsoft Defender Antivirus, Avast Free Antivirus, Malwarebytes and 2 more. Prices and licenses checked October 25, 2026.

Best open-source Network Scanners compared: Angry IP Scanner, RustScan, Masscan, ZMap and 2 more, with licenses, platforms and prices from official pages checked October 24, 2026.

Nessus alternatives: Greenbone (OpenVAS), Nuclei, Wazuh, Nmap and 2 more. Prices and licenses checked October 25, 2026.

Sophos alternatives: Microsoft Defender Antivirus, Microsoft Defender for Business, ClamAV, Wazuh and 2 more. Prices and licenses checked October 22, 2026.

SentinelOne alternatives: CrowdStrike Falcon, Sophos, Microsoft Defender for Business, Wazuh and 2 more. Prices and licenses checked October 25, 2026.

Qualys alternatives: Greenbone (OpenVAS), Wazuh, Nessus, Nuclei and 1 more. Prices and licenses checked October 25, 2026.