Nessus ($3,000+/year) is a Professional Vulnerability Scanner. VulnScan gives you Free website scanning immediately, no install, no license — same vulnerability detection for web assets. Try it free — 60 seconds, no signup.
✓ No signup · ✓ Free · ✓ Faster than Nessus
Nessus is a well-known Professional Vulnerability Scanner at $3,000+/year. It's a good tool for what it does. But for external website vulnerability scanning, VulnScan delivers a better free experience for most security teams and individual developers.
| Feature | VulnScan | Nessus |
|---|---|---|
| Price | Free (basic) | $3,000+/year |
| Setup Required | Zero — works in browser | Installation/account required |
| External Scan | Yes — attacker perspective | Varies |
| Results Speed | 60 seconds | Minutes to hours |
| CVE Detection | 200+ CVEs | Varies by tier |
| Subdomain Discovery | Yes | Limited |
| Security Headers Check | Yes | Limited |
| SSL/TLS Analysis | Yes | Basic |
Free website scanning immediately, no install, no license — same vulnerability detection for web assets. Nessus is a solid Professional Vulnerability Scanner, but its pricing ($3,000+/year) puts it out of reach for individual developers and small teams who just need a reliable external vulnerability scan.
VulnScan scans your site from outside your network — the same vantage point as attackers. This black-box approach finds exposed subdomains, open ports, misconfigured servers, and externally visible CVEs that internal tools often miss.
Free external vulnerability scan. 60 seconds. Zero signup.