NSAuditor AI

NSAuditor AI is an open-source, on-premises network security scanner for organizations that need local control of infrastructure data. It suits MSPs, MSSPs, compliance consultancies and mid-market teams with staff to operate their own scanning environment. The free Community tier is unusually capable, while higher tiers matter mainly when CVE intelligence, cloud auditing or formal reporting justify their cost.

Overview

The scanner runs on customer infrastructure and supports network hosts, CIDR subnets, AWS, Azure, GCP, TLS, DNS and OT targets. Authenticated and continuous scanning extend it beyond one-off discovery. The maker says scan data, findings and reports remain on the customer’s machine, with offline JWT license validation.

When configured for offline operation, scanning can run without internet access. Ollama enables similarly offline AI analysis, while every tier can use OpenAI or Claude through customer-provided API keys. That flexibility is valuable for privacy-sensitive environments, but the AI providers are not bundled; teams must supply credentials and manage the chosen service or local model.

Key features

Scanning, analysis and exports

Community provides 27 scanner plugins, parallel subnet scanning and a SYN scanner described as an Nmap wrapper. Webhook alerts and JSON, HTML, SARIF and CSV exports allow a free deployment to feed existing workflows. The product can also run as an MCP server for MCP-aware clients.

CVE and compliance work

Pro adds offline-first NVD CVE matching and exploit-first triage using customer-populated CISA KEV and FIRST EPSS data stores. That approach suits teams that need prioritization without sending findings to a hosted analysis service, provided they maintain those data stores.

Enterprise adds cloud auditors for AWS, GCP and Azure and evidence packs for SOC 2, HIPAA, NIST CSF 2.0, PCI DSS v4.0.1, ISO/IEC 27001:2022, CIS Controls v8, GDPR Article 32 and NIST SP 800-171 Rev 2. Its Vanta, Drata and Secureframe connectors are opt-in, but production validation is still in progress, so they should be treated as early-access integrations. HIPAA evidence is not a BAA, and NIST SP 800-171 support is preparation assistance rather than certification.

Pricing

Community: $0.00 per free, billed forever. It includes all 27 scanner plugins, MIT licensing, parallel scanning, webhooks and the four listed export formats with no stated restrictions. This is the sensible entry point for individuals and teams able to self-host.

Pro (annual): $39.00 per year, shown as billed as $470/yr. It includes Community plus CVE matching, risk scoring and email support with a 48-hour SLA. The annual billing display should be reconciled before purchase. Pro (monthly) costs $49.00 per month, billed each month, with the same additions. Annual billing is cheaper on the stated figures if the displayed terms are intentional; monthly is better for short commitments.

Enterprise Base costs $2,000.00 per year with annual invoicing and up to five seats or scanning nodes. Enterprise Growth is $5,000.00 per year for up to 25. Enterprise Scale is $10,000.00 per year with unlimited seats, a custom SLA and custom plugins. These tiers target organizations that need cloud and compliance capabilities rather than simply more scanner plugins.

Platforms

NSAuditor AI supports Linux, macOS, Windows and self-hosted deployment. Its on-premises model and offline options favor regulated or isolated environments, while buyers wanting a vendor-hosted console should look elsewhere.

Who it's for

It is a strong fit for MSPs, MSSPs, healthcare, finance, government and critical-infrastructure teams that can administer local scanning and want evidence and findings kept in-house. Community also suits smaller operators needing broad basic scanning at no cost. It is less suitable for organizations seeking turnkey SaaS operations, a HIPAA BAA or certification-grade NIST 800-171 evidence.

Pros and cons

• Pros: Free MIT-licensed Community tier with 27 plugins and no stated restrictions; offline-capable scanning and Ollama analysis; broad network, cloud and OT target coverage; Pro’s offline CVE and exploit-priority data; Enterprise evidence packs and cloud auditors.
• Cons: On-premises operation requires customer-managed deployment; AI requires customer API keys or an Ollama setup; Enterprise HIPAA output is not a BAA; NIST 800-171 support is preparation only; GRC connectors remain early-access; the annual Pro price is displayed inconsistently.

Alternatives

Choose Intruder when a free plan with five infrastructure targets, weekly external scans and a connected cloud account better matches a smaller, externally oriented scope.

ManageEngine Vulnerability Manager Plus is the alternative for buyers comparing a free edition with a paid professional on-premises package.

Pick Nmap when you want a free, established scanner rather than NSAuditor AI’s AI, CVE and compliance layers.

Nuclei is another free MIT-licensed open-source option, primarily used as a standalone tool.

OpenVAS suits readers seeking a free virtual appliance and community feed, with enterprise features limited in its free edition.

OWASP Nettacker is a free Apache-licensed open-source alternative.

Sirius is another free open-source scanning option.

Verdict

Choose NSAuditor AI if you need broad, self-hosted scanning with local data control, offline operation and a capable free starting tier. Its main reason to look elsewhere is the operational burden and the qualification required around Enterprise compliance evidence and early-access GRC integrations.