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Tenable Nessus Alternatives — 12 Options Compared (2026)
Looking for an alternative to Tenable Nessus? Whether the price is wrong, features don't fit, or you've outgrown the platform — here are 12 tools in the same category, with honest pricing and limitations.
Why people search for alternatives
- Price: Tenable Nessus starts at $0/mo — alternatives below cost less.
- Features: some alternatives focus on specific use cases (network, vuln-management, free-tier) where Tenable Nessus is broader.
- Self-hosting: if you want full control, open-source options replace SaaS billing entirely.
- Free tier: generous free tiers exist if your monitor count is small.
Top alternatives
Open-source vulnerability scanner descended from Nessus — free Community Edition, paid appliances for enterprise.
Continuous external vulnerability scanner aimed at SMBs — published pricing from $113/mo per target group.
Open-source SIEM/XDR with file-integrity, vuln detection, compliance audit modules — also paid Wazuh Cloud.
Most popular free open-source DAST scanner — active/passive web scanning, intercepting proxy, CI/CD integration.
Industry-standard pentest proxy — free Community for manual work, Pro $449/yr per user, Enterprise from $6,995/yr.
Developer-first SCA + SAST — Git/IDE/CI integration, generous free tier, paid Team from $25/dev/mo.
Online toolkit of 25+ pentest scanners (web, network, recon) — paid plans from $93/mo with unlimited scans.
Qualys VMDR
paidEnterprise VM platform with web app scanning add-on — quote-based, asset-priced.
Template-driven fast scanner — community templates cover thousands of CVEs. Free CLI, paid managed cloud.
Standard network discovery + port/service scanner — universal first step for any audit.
WordPress-specific vulnerability database + scanner — free CLI with optional API key.
WordPress + plugin CVE feed with virtual patching — paid plans from $5/site/mo.
How to choose
If you're switching away from Tenable Nessus, the most common reasons are budget (cheaper or free options below), features that don't fit your stack (network-specific tools beat generalists), or wanting self-hosted control. Pick 2–3 from the list above, run a 14-day side-by-side test, and switch only if the alternative is a clear win on at least one axis.