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Nuclei (ProjectDiscovery) Alternatives — 12 Options Compared (2026)

Looking for an alternative to Nuclei (ProjectDiscovery)? 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

Top alternatives

OWASP ZAP

OWASP ZAP

free from $0/mo

Most popular free open-source DAST scanner — active/passive web scanning, intercepting proxy, CI/CD integration.

web-appapidastopen-sourcefree-tier
Nikto

Nikto

free from $0/mo

Long-running open-source web server scanner — checks 6,700+ dangerous files and outdated software.

web-appdastopen-sourcefree-tiersolo
Burp Suite

Burp Suite

freemium from $0/mo

Industry-standard pentest proxy — free Community for manual work, Pro $449/yr per user, Enterprise from $6,995/yr.

web-appapidastpentestfree-tier
Pentest-Tools.com

Pentest-Tools.com

freemium from $0/mo

Online toolkit of 25+ pentest scanners (web, network, recon) — paid plans from $93/mo with unlimited scans.

web-appnetworkrecondastfree-tier
StackHawk

StackHawk

paid from $49/mo

Developer-DAST built on top of ZAP — CI-native, free tier, paid from $49/app/mo.

web-appapidastdeveloperfree-tier
Beagle Security

Beagle Security

freemium from $0/mo

AI-assisted DAST with free starter tier — paid plans from $99/mo, popular with SMB SaaS.

web-appapidastfree-tiersmall-team
GuardLabs Web-Audit Guardian

GuardLabs Web-Audit Guardian

freemium from $99/mo

Continuous public-web-layer guardian — watches HTTP / size / multi-lang redirects / cyrillic drift / structure every 30 min. Self-hostable from $99 one-time.

web-appmonitoruptimewordpresssmall-team
Acunetix

Acunetix

paid

Mature commercial DAST scanner from Invicti — quote-based, generally $4,500+/yr per target tier.

web-appapidastenterprisesmall-team
Astra Pentest

Astra Pentest

paid from $199/mo

Continuous DAST + manual pentest hybrid — published pricing $199-$5,999/yr, popular with SaaS startups.

web-appapidastpentestsmall-team
Probely

Probely

paid from $59/mo

API-first DAST scanner with developer ergonomics — published from $59/mo for a single target.

web-appapidastsmall-teamenterprise
Greenbone / OpenVAS

Greenbone / OpenVAS

freemium from $0/mo

Open-source vulnerability scanner descended from Nessus — free Community Edition, paid appliances for enterprise.

networkvuln-managementopen-sourcefree-tiersmall-team
Nmap

Nmap

free from $0/mo

Standard network discovery + port/service scanner — universal first step for any audit.

networkreconopen-sourcefree-tiersolo

How to choose

If you're switching away from Nuclei (ProjectDiscovery), the most common reasons are budget (cheaper or free options below), features that don't fit your stack (web-app-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.