Nessus, launched by Tenable in 2002 and headquartered in Columbia, Maryland, is one of the most widely deployed vulnerability scanners, covering 50,000+ detection rules and 400+ system and application checks — the essential tool for enterprise vulnerability management.
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Burp Suite by PortSwigger is the industry-standard web security testing toolkit, offering intercepting proxy, automated vulnerability scanning, and a rich BApp extension ecosystem covering the complete security testing workflow from manual testing to CI/CD integration.
OpenVAS (Greenbone) is the world's largest open source vulnerability scanner, initiated by Greenbone Networks in 2008, with over 100,000 NVT test cases providing automated vulnerability detection, compliance assessment, and penetration testing integration.
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1 results shownVulnerability Scanner Comparison: Best Security Scanning Tools 2026
Vulnerability scanners help identify security weaknesses before attackers do. Compare Nessus, OpenVAS, Qualys, and other top scanners.