Detectify vs Tenable Nessus
Side-by-side comparison of features, pricing, ratings, and alternatives.
Detectify is an application security platform that performs dynamic vulnerability scanning across external attack surfaces, testing domains, IPs, APIs, and applications with payload-based techniques rather than relying solely on static signature matching. Its Surface Monitoring product continuously discovers and maps external assets while testing them for exploitable vulnerabilities. Detectify's API scanning uses Dynamic AI Fuzzing to test REST and GraphQL endpoints, and its Application Scanning performs deep, authenticated DAST testing with AI-powered fuzzing and crawling. A distinctive part of the platform is its Crowdsource network of more than 400 ethical hackers who feed newly discovered vulnerabilities, including many without an assigned CVE, into Detectify's scanner within minutes of research.
Nessus is Tenable's vulnerability assessment scanner, used to discover vulnerabilities and misconfigurations across operating systems, network devices, and applications. It covers over 117,000 CVEs through more than 319,000 detection plugins, with roughly 100 new plugins released weekly, and prioritizes findings using CVSS v4, EPSS, and Tenable's own VPR risk scoring. The product ships with 450+ pre-built policy and compliance audit templates and guided remediation workflows to help teams act on results rather than just collect them. Nessus Professional and Nessus Expert are sold as annual subscriptions, with Expert adding external attack surface scanning and expanded web application scanning.
- Crowdsourced ethical hacker research surfaces vulnerabilities before they get a CVE
- Very fast turnaround from new research to live scanner test
- Combines surface monitoring, API, and application scanning in one platform
- Payload-based testing reduces false positives from static matching
- Industry-standard, widely trusted scanner
- Extensive and frequently updated CVE/plugin coverage
- Multiple risk-scoring models for prioritization
- Flexible deployment including low-cost hardware
- Pricing is not published and requires a demo or trial request
- Crowdsource-driven findings mean coverage depends partly on researcher activity
- Best suited to organizations with dedicated security or AppSec staff to act on findings
- Annual pricing is a significant investment for small teams
- Web app scanning is limited by FQDN count on base tier
- Requires security expertise to interpret and act on results effectively
More alternatives & similar tools
Alternatives to Detectify
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Vulnerability assessment scanner that finds, prioritizes, and helps remediate security weaknesses.
Alternatives to Tenable Nessus
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Vulnerability management platform behind the widely used OpenVAS scanning engine, from appliance to free edition.
The Verdict
AI-generated from listing dataTenable Nessus offers a mature, on‑premises scanner with extensive CVE coverage and multiple risk scores, while Detectify provides a cloud SaaS that adds continuous external asset discovery, AI‑driven testing, and crowdsourced research.
Key differences
- •Deployment model: Nessus is a desktop/on‑prem app; Detectify is cloud‑only SaaS.
- •Scope of scanning: Nessus focuses on network, host, and limited web app scanning; Detectify covers external asset mapping, API (REST/GraphQL) testing, and AI‑driven payload scanning.
- •Risk prioritization: Nessus uses CVSS v4, EPSS, and its own VPR scores; Detectify relies on crowdsourced findings and AI without listed scoring models.
- •Pricing transparency: Nessus lists a subscription model (paid); Detectify requires contact for pricing, making cost estimation harder.
- •Update cadence: Nessus updates plugins for 117,000+ CVEs weekly; Detectify converts new researcher findings to live tests within 15 minutes.
Pricing & value
Nessus states a paid subscription; Detectify hides price behind a contact request, making budgeting uncertain.
Ease of use / learning curve
Detectify is cloud SaaS with no local install, while Nessus requires desktop deployment and expertise to interpret results.
Features & depth
Nessus covers 117k+ CVEs with 319k plugins and multiple risk scores; Detectify lacks disclosed CVE coverage depth.
Integrations & ecosystem
Detectify lists explicit CI/CD pipeline integrations and API testing; Nessus only notes API availability, no integration list.
Collaboration
Detectify’s cloud platform enables shared dashboards and continuous monitoring; Nessus is a desktop app, less collaborative by nature.
Scalability
Detectify scales automatically as a SaaS; Nessus can run on small hardware like Raspberry Pi but scaling requires additional licenses.
Support
Nessus offers documentation, training, and optional advanced support; Detectify only lists demo/trial booking as support options.
Choose Detectify if…
App‑focused teams wanting continuous external surface monitoring and AI‑enhanced testing.
Choose Tenable Nessus if…
Enterprises needing deep host/network vulnerability data and on‑prem control.
Common questions
Which tool provides more comprehensive CVE coverage?
Nessus covers 117,000+ CVEs with over 319,000 detection plugins; Detectify does not disclose CVE coverage.
Can I run the scanner without installing software locally?
Detectify is cloud/SaaS only; Nessus requires a desktop application installation.
How transparent is the pricing?
Nessus lists a paid subscription model; Detectify requires you to contact sales for pricing details.