Overview

NSAuditor AI combines network discovery with credentialed scans that read configuration and metadata without needing create, write, modify, or delete permissions. That narrow access model is a practical advantage for infrastructure teams wary of scan tools changing systems. It is an on-premises product, however, so it will not suit buyers looking for a hosted service.

The product supports zero-data-exfiltration operation, air-gapped environments, and offline licensing. AI analysis is available across tiers through OpenAI, Claude, or Ollama, using customer-provided API keys. An MCP server works with Claude Desktop, Claude Code, Cursor, and other MCP-compatible assistants, which gives teams a way to connect analysis to familiar tools while keeping the choice of provider and API key in their hands.

Reports can be exported in formats including JSON, HTML, SARIF, CSV, and Markdown, with executive HTML and Jira-importer CSV also available depending on edition. Compliance artifacts include SHA-256 chain-of-custody sidecars; RFC 3161 trusted timestamps are an opt-in feature. Those options make the product relevant to teams that need portable findings or traceable evidence, though the available formats vary by edition.

Key features

Community provides 27 scanner plugins under the MIT license. Pro adds offline NVD CVE matching and exploit-first prioritization using CISA KEV and FIRST EPSS data from customer-populated stores. That approach can help security teams rank findings by exploit context without depending on a live intelligence feed, but maintaining the local data stores is part of the job.

Enterprise adds 28 cloud auditors spanning AWS, GCP, and Azure, plus a zero-trust posture check scored from a network-host scan. It also maps one scan to eight frameworks: 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. These capabilities give organizations with cloud estates or several compliance obligations a reason to consider Enterprise; they are not part of the lower tiers.

Enterprise includes opt-in scan-time connectors for Vanta, Drata, and Secureframe. Production live-tenant validation is still in progress, so buyers who depend on those connectors should account for that status. The product also supports Linux, macOS, and Windows, giving teams a choice of operating system for deployment.

Pricing

Community costs 0.00 USD per free, billed Forever. It includes 27 scanner plugins, carries no restrictions, and requires no signup. That makes it a low-friction option for individuals or teams evaluating the core scanner, but advanced threat prioritization, Enterprise cloud auditors, and compliance mapping are outside its stated scope.

Pro (annual) costs 39.00 USD per year, billed as $470/yr, and saves $118 versus monthly billing. It adds CVE matching, risk scoring, four parallel analysis agents, and a 48-hour email-support SLA. Pro (monthly) costs 49.00 USD per month, billed each month, and provides the same features, including CVE matching, risk scoring, and parallel analysis agents. Annual billing is the lower-cost route for a continuing deployment; monthly billing avoids an annual term but costs more over a year. Pro is the fit for teams wanting vulnerability context and support without Enterprise’s cloud and framework features.

Enterprise Base costs 2000.00 USD per year with annual invoicing and supports up to five seats or scanning nodes. Enterprise Growth costs 5000.00 USD per year, also invoiced annually, for up to 25 seats or scanning nodes. Enterprise Scale costs 10000.00 USD per year and includes unlimited seats, a custom SLA, and custom plugins. These tiers target organizations that need Enterprise capabilities at different deployment sizes; Scale is the option when seat limits or custom requirements matter. Enterprise support adds onboarding, dedicated channels, or a dedicated support engineer. Community has self-serve documentation and GitHub issues or discussions, while Pro provides email support.

Platforms

NSAuditor AI runs on Linux, macOS, and Windows. Its agentless, on-premises deployment and credentialed scans suit organizations able to run audits from infrastructure they control; it is not designed as a web-hosted scanning service.

Who it's for

NSAuditor AI is best suited to security and infrastructure teams that prioritize read-only access, local control, or offline operation. Community can serve as a free entry point, while Pro makes more sense for teams that need CVE matching, risk scoring, and parallel analysis. Enterprise is the relevant tier for cloud coverage across AWS, GCP, and Azure, multi-framework compliance mapping, or larger seat and scanning-node needs.

It is a weaker fit for buyers who require a hosted product, need Enterprise cloud auditors or compliance mappings at a lower tier, or do not want to manage customer-provided AI keys and locally populated threat-intelligence stores.

Pros and cons

Pros: Read-only scans avoid create, write, modify, and delete permissions, reducing the access scope required for audits.
Pros: Air-gapped operation, offline licensing, and zero-data-exfiltration support suit restricted environments.
Pros: Free Community includes 27 MIT-licensed scanner plugins without signup, so teams can begin without a paid commitment.
Pros: Enterprise combines 28 cloud auditors with mapping across eight named frameworks, useful for organizations with both cloud and compliance needs.
Cons: Cloud auditors and framework mapping require Enterprise, whose annual plans start at 2000.00 USD per year.
Cons: Pro threat-intelligence matching depends on customer-populated stores, adding maintenance work for teams that want exploit-first prioritization.
Cons: AI analysis relies on customer-provided API keys, so teams must arrange their own provider access.
Cons: Enterprise connectors for Vanta, Drata, and Secureframe have not completed production live-tenant validation.

Alternatives

For a broader comparison, see Network Vulnerability Scanners and Vulnerability Scanning Software.

ScanTitan is worth considering for buyers seeking a web- or API-platform option, with a free plan and a Professional tier at 119.00 USD per year for advanced vulnerability and exposure scanning, malware monitoring, and uptime monitoring.

ManageEngine Vulnerability Manager Plus is an alternative with a free edition and a 695.00 USD per year Professional on-premises plan, as well as Windows, macOS, Linux, web, API, and self-hosted platform support.

Nuclei is a free, MIT-licensed CLI intended primarily as a standalone tool, a leaner choice for users who want that format.

OpenVAS offers a free virtual appliance with a community feed, limited enterprise features, and no default support.

OWASP Amass is a free Apache-licensed framework for readers who prefer that open-source option.

Pentest-Tools Port Scanner is a web- and API-based alternative for open-port and service discovery, with a free tier and a NetSec plan starting at 95.00 USD per month.

Qualys External Attack Surface Management offers a 30-day no-cost trial of CSAM with EASM for buyers considering that option.

Verdict

Choose NSAuditor AI if your priority is agentless, read-only auditing that stays on infrastructure you control, particularly if offline operation matters. Community is a credible free starting point, and Pro adds practical vulnerability prioritization; look elsewhere if you need hosted deployment or cloud and compliance coverage without an Enterprise commitment.

	NSAuditor AI	Tenable Security Center
Free plan	Yes	No
Free trial	No	No
Paid from	$3.25/mo	—
Open source	No	No
Platforms	Linux, macOS, Windows	Linux, Web
Free plan	Yes	No
Authenticated scanning	—	Yes

NSAuditor AI vs Tenable Security Center

NSAuditor AI

Tenable Security Center