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Acunetix alternatives: 6 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rankAll penetration testing tools

Top picks

  • Burp Suite logo

    Best overall

    Burp Suite

    Starting price: $499 (Burp Suite Professional)

  • ZAP logo

    Best free option

    ZAP

    Open source

  • ZAP logo

    Best open source

    ZAP

    Open source

Common reasons people leave Acunetix: quote-only pricing per target, and rebrand to Invicti Web + API makes the product line confusing. We ranked 6 alternatives by how directly each one replaces Acunetix, then by reviews, real visits and how recently each app's facts were checked against its own website. Burp Suite currently ranks first.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1Burp Suite logoBurp SuiteFree plan + paid$499 (Burp Suite Professional)NoWindows, macOS, Linux7 of 768.8
2ZAP logoZAPOpen source—YesWindows, macOS, Linux4 of 464.8
3Detectify logoDetectifyPaidFrom €2,500 per year (Standard)NoWeb9 of 961.8
4Tenable Nessus logoTenable NessusPaid$199/yearNoWindows, macOS, Linux +18 of 859.4
5Invicti logoInvictiPaid$500 max per pentestNoWeb, Self-hosted5 of 557.5
6Intruder logoIntruderFree plan + paid—NoWeb6 of 657.5
  1. Burp Suite logo

    1. Burp SuiteTop pick

    Best for: Pentesters and bug bounty hunters doing hands-on web application testing

    Free plan + paidWindows, macOS, Linux

    68.8

    score / 100

    Why switch from Acunetix

    Combines a capable automated scanner with the manual testing tools most web pentesters already use.

    Pros

    • Industry-standard proxy, Repeater and Intruder workflow
    • Free Community Edition for learning and manual testing
    • Large extension library and free training from PortSwigger

    Cons

    • The scanner and full-speed Intruder require the paid Professional licence
    • Community Edition can't save projects
    • Java-based UI can be heavy on memory during big tests
    Visit Burp Suite Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Burp Suite a good Acunetix alternative?

    Verified facts

    7 of 7 verified
    Free edition
    Community Edition
    Checked Nov 8, 2026portswigger.net(opens source in a new tab)
    Pro-only features
    Project files, full Intruder, vulnerability scanner
    Checked Nov 8, 2026portswigger.net(opens source in a new tab)
    Billing
    Yearly licence terms
    Checked Nov 8, 2026portswigger.net(opens source in a new tab)
    Owner
    PortSwigger Ltd
    Checked Nov 8, 2026portswigger.net(opens source in a new tab)
    Starting price
    $499 (Burp Suite Professional)
    Checked Nov 8, 2026portswigger.net(opens source in a new tab)
    Free plan
    Yes, Community Edition
    Checked Nov 8, 2026portswigger.net(opens source in a new tab)
    Free trial
    Yes (Professional)
    Checked Nov 8, 2026portswigger.net(opens source in a new tab)
  2. ZAP logo

    2. ZAP

    Best for: Developers and AppSec teams who want free automated web scanning, including in CI

    Open sourceWindows, macOS, Linux

    64.8

    score / 100

    Why switch from Acunetix

    Free, open-source web app scanner with active scanning, spidering and CI automation, no licence needed.

    Pros

    • Free and open source, with the automated scanner included
    • Docker images and automation framework for CI pipelines
    • Add-on marketplace extends it

    Cons

    • Interface is dated and busier than Burp or Caido
    • Windows and Linux builds need Java 17 or newer installed
    • Releases are unsigned, so operating systems show warnings on install
    Visit ZAP Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is ZAP a good Acunetix alternative?

    Verified facts

    4 of 4 verified
    Price
    Free and open source
    Checked Nov 8, 2026zaproxy.org(opens source in a new tab)
    License
    Apache-2.0
    Checked Oct 30, 2026github.com(opens source in a new tab)
    Platforms
    Windows, Linux, macOS, Docker
    Checked Nov 8, 2026zaproxy.org(opens source in a new tab)
    Requirements
    Java 17+ on Windows and Linux
    Checked Nov 8, 2026zaproxy.org(opens source in a new tab)
  3. Detectify logo

    3. Detectify

    Best for: Product security teams with many domains and web apps exposed to the internet

    PaidWeb

    61.8

    score / 100

    Why switch from Acunetix

    SaaS scanner driven by payloads from ethical hackers, plus external attack-surface monitoring of your domains.

    Pros

    • Tests sourced from a community of ethical hackers
    • Strong subdomain takeover and attack surface discovery
    • No agents needed for external scanning
    • Published plan prices

    Cons

    • Per-domain and per-target charges on top of the platform fee
    • PCI ASV scanning costs extra
    • Focused on external assets rather than internal networks
    Visit Detectify Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Detectify a good Acunetix alternative?

    Verified facts

    9 of 9 verified
    Starter platform fee
    €0 per year
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
    Standard plan
    From €2,500 per year
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
    PCI ASV scanning
    €500 per year add-on
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
    Agents
    Not needed for external scanning
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
    Ethical hacker community
    400+
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
    Starting price
    From €2,500 per year (Standard)
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
    Free plan
    Yes, Starter from €0, up to 5 users
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
    Professional plan
    From €5,000 per year
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
    Enterprise plan
    From €15,000 per year
    Checked Nov 8, 2026detectify.com(opens source in a new tab)
  4. Tenable Nessus logo

    4. Tenable Nessus

    Best for: Pentesters, consultants and IT teams that need trusted point-in-time vulnerability scans

    PaidSelf-hostableWindows, macOS, Linux, Web

    59.4

    score / 100

    Why switch from Acunetix

    Broader vulnerability scanner for hosts and networks, if you need infrastructure coverage beyond web apps.

    Pros

    • Large, frequently updated plugin library
    • Clear severity scoring and remediation guidance
    • Compliance and configuration audits in Professional

    Cons

    • Free licence lasts 30 days and covers only 5 IPs
    • Professional costs thousands per year
    • Cheaper editions are limited to non-commercial use
    Visit Tenable Nessus Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Tenable Nessus a good Acunetix alternative?

    Verified facts

    8 of 8 verified
    Free licence
    30 days, up to 5 IPs
    Checked Nov 8, 2026tenable.com(opens source in a new tab)
    Essentials Plus price
    $199/year
    Checked Nov 8, 2026tenable.com(opens source in a new tab)
    Nessus Professional price
    $4,790
    Checked Nov 8, 2026tenable.com(opens source in a new tab)
    Commercial use
    Professional only
    Checked Nov 8, 2026tenable.com(opens source in a new tab)
    Free plan
    Yes (Nessus Essentials)
    Checked Nov 8, 2026tenable.com(opens source in a new tab)
    Essentials Plus plan
    $199 a year (free for verified students)
    Checked Nov 8, 2026tenable.com(opens source in a new tab)
    Nessus Professional plan
    $4,790 a year
    Checked Nov 8, 2026tenable.com(opens source in a new tab)
    Nessus Expert plan
    $6,790 a year
    Checked Nov 8, 2026tenable.com(opens source in a new tab)
  5. Invicti logo

    5. Invicti

    Best for: AppSec teams in larger companies that want DAST, SAST and SCA results in one place

    PaidWeb, Self-hosted

    57.5

    score / 100

    Why switch from Acunetix

    Sister product from the same company, adding proof-based scanning and enterprise workflow for larger teams.

    Pros

    • Proof-based DAST that cuts false positives
    • Adds SAST, SCA, secrets and container scanning in higher tiers
    • On-premises and air-gapped deployment available
    • Agentic pentest option with a published price cap

    Cons

    • Main platform pricing is quote-only
    • On-premises deployment only in the top package
    • More platform than small teams need for basic scanning
    Visit Invicti Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Invicti a good Acunetix alternative?

    Verified facts

    5 of 5 verified
    Agentic pentest price
    $500 max per pentest
    Checked Nov 8, 2026invicti.com(opens source in a new tab)
    On-premises deployment
    AppSec Flex package
    Checked Nov 8, 2026invicti.com(opens source in a new tab)
    Trial
    Proof-of-concept licences
    Checked Nov 8, 2026invicti.com(opens source in a new tab)
    Capabilities
    DAST, SAST, SCA, API security
    Checked Nov 8, 2026invicti.com(opens source in a new tab)
    Free trial
    Proof-of-concept licences
    Checked Nov 8, 2026invicti.com(opens source in a new tab)
  6. Intruder logo

    6. Intruder

    Best for: Small and mid-sized companies that need easy external and cloud scanning for compliance

    Free plan + paidWeb

    57.5

    score / 100

    Why switch from Acunetix

    Combines web app scanning with infrastructure and cloud checks, plus a free tier.

    Pros

    • Free plan and 14-day trial with no sales call
    • Combines several scanning engines with its own checks
    • Clear reports suited to SOC 2 and ISO 27001 evidence
    • Monthly or annual billing

    Cons

    • Internal network scanning only on Pro and Enterprise plans
    • Per-target licences add up for large estates
    • Lighter on internal enterprise networks than Qualys or Tenable
    Visit Intruder Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Intruder a good Acunetix alternative?

    Verified facts

    6 of 6 verified
    Free plan
    Yes
    Checked Nov 8, 2026intruder.io(opens source in a new tab)
    Free trial
    14 days
    Checked Nov 8, 2026intruder.io(opens source in a new tab)
    AI pentests
    From $3,500 per test
    Checked Nov 8, 2026intruder.io(opens source in a new tab)
    Scanning engines
    Nuclei, OpenVAS, Tenable
    Checked Nov 8, 2026intruder.io(opens source in a new tab)
    Internal scanning
    Pro and Enterprise only
    Checked Nov 8, 2026intruder.io(opens source in a new tab)
    AI pentest
    From $3,500 per test
    Checked Nov 8, 2026intruder.io(opens source in a new tab)

The best Acunetix alternative for…

The highest-ranked app in this list for each need.

Burp Suite logo

Best Acunetix alternative for most people

Burp Suite

Combines a capable automated scanner with the manual testing tools most web pentesters already use.

ZAP logo

Best Acunetix alternative for a free option

ZAP

Free, open-source web app scanner with active scanning, spidering and CI automation, no licence needed.

Intruder logo

Best Acunetix alternative for a free plan you can upgrade

Intruder

Combines web app scanning with infrastructure and cloud checks, plus a free tier.

ZAP logo

Best Acunetix alternative for open source

ZAP

Free, open-source web app scanner with active scanning, spidering and CI automation, no licence needed.

Tenable Nessus logo

Best Acunetix alternative for self-hosting

Tenable Nessus

Broader vulnerability scanner for hosts and networks, if you need infrastructure coverage beyond web apps.

Burp Suite logo

Best Acunetix alternative for Mac

Burp Suite

Combines a capable automated scanner with the manual testing tools most web pentesters already use.

Burp Suite logo

Best Acunetix alternative for Windows

Burp Suite

Combines a capable automated scanner with the manual testing tools most web pentesters already use.

Burp Suite logo

Best Acunetix alternative for Linux

Burp Suite

Combines a capable automated scanner with the manual testing tools most web pentesters already use.

Detectify logo

Best Acunetix alternative for working in the browser

Detectify

SaaS scanner driven by payloads from ethical hackers, plus external attack-surface monitoring of your domains.

Acunetix alternatives: common questions

What is the best alternative to Acunetix?

Burp Suite ranks first right now. Combines a capable automated scanner with the manual testing tools most web pentesters already use. ZAP and Detectify follow it in our ranking.

Acunetix vs Burp Suite: what's the difference?

Acunetix is a paid product; Burp Suite is free with paid plans. Verified prices: Acunetix $500 max per pentest, Burp Suite $499 (Burp Suite Professional). Only Acunetix runs on Web. Only Burp Suite runs on Windows, macOS and Linux.

Is Acunetix free?

Acunetix is a paid product. Agentic Pentest plan: $500 max per pentest; Web + API plan: Quote-based; Free trial: Proof of Concept licence on request. Checked on Acunetix's own site, November 2026.

How much do Acunetix alternatives cost?

Verified prices for the top-ranked Acunetix alternatives: Burp Suite, $499 (Burp Suite Professional); Detectify, From €2,500 per year (Standard); Tenable Nessus, $199/year; Invicti, $500 max per pentest. Each price was checked on the app's own site; see each card below for the date and source.

Is there a free alternative to Acunetix?

Yes. Burp Suite (free plan + paid), ZAP (open source) and Intruder (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Acunetix?

Yes: ZAP.

Which Acunetix alternatives work on Linux?

Burp Suite, ZAP and Tenable Nessus run on Linux.

Why do people switch from Acunetix?

The complaints we hear most: quote-only pricing per target; rebrand to Invicti Web + API makes the product line confusing; automated scanning only; no manual testing proxy.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Acunetix, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.