Expert Guide

The Best Penetration Testing Tools in 2026

Q: What is the best penetration testing tool in 2026?

Burp Suite Professional is the best fit for a web application test in 2026, because the scanner, full Intruder, project files, and Burp Collaborator are on that edition and not on Community. The buy button is the price in the table, the license is per user, and it cannot be shared, so a rotating login does not save a seat. Nessus Professional fits better when the job is a network scanner rather than a proxy, checked on vendor pages, 23 September 2026.

Q: Is there a free penetration testing tool?

Yes, several tools are free downloads : Nmap 7.991, OWASP ZAP 2.17.0, Kali Linux, the Nuclei CLI, Metasploit Framework, and Burp Community. Nessus Essentials is free only for non-commercial use, up to 5 IPs, on a 30-day license, so it cannot carry a paid client test. Essentials Plus is $199 a year for up to 20 IPs unless you are a verified student or instructor. None of the free Nessus licenses is the commercial scanner.

Q: Burp Suite vs OWASP ZAP: which should a tester buy?

Buy Burp Suite Professional when the engagement needs the scanner, full Intruder, saved project files, and Burp Collaborator. Stay on ZAP 2.17.0 when the license budget is zero and you can live with unsigned installers, a Java 17 requirement, and support only for the latest full release. ZAP's download page lists no paid edition, and Burp Community is closer to ZAP than to Professional because the scanner is not in it.

Q: Is Nessus a penetration testing tool?

Nessus Professional is the scanner for a point-in-time commercial assessment, with unlimited IPs on one scanner license, so a second person on that engine is not a second invoice. It does not replace a web proxy or an exploit framework. A vulnerability management program is a different purchase, covered in the vulnerability scanners guide, and the Tenable review covers the platform beyond Professional. Essentials cannot be used for a paid client test.

Q: What is the difference between Cobalt and a tool you run yourself?

Burp, Nessus, Nmap, ZAP, Kali, and Nuclei are software you operate , and your staff still writes the report. Cobalt Standard, Premium, and Enterprise are quote-only contracts with a pentester start-time, from 3 business days down to 1, and 1 target on the comparison. The autonomous web test at the promotional per-test price is a separate dated offer, and the credit debit can still follow your contracted rate. It does not replace the desktop license if your own staff does the test.

Five Burp Suite Professional seats are $2,495, because that license does not discount with headcount, and Nessus Essentials cannot carry a commercial client test.

Louis CorneloupFounder, Dupple · 910,000+ readers · Updated Sep 2026

Product links may be affiliate links. How we rate 10 tools compared

TL;DR

The best penetration testing tool in 2026 is Burp Suite Professional at $499 per user, and one subscription cannot be shared. Choose Nessus Professional at $4,790 for one year when the engagement starts on the network. Choose Metasploit Framework for the free command-line edition, and Invicti's agentic assessment when a web test has a printed cap of $500.

Nmap 7.991, OWASP ZAP 2.17.0, Kali Linux, and the Nuclei CLI are free when a person still writes the report and the software line has to stay at zero. Cobalt's credit tiers are a quote, with a promotional autonomous web test beside them, so that sticker is not the human-led contract. Metasploit Pro has no USD price on Rapid7's editions page, so the report-ready edition is a sales call, and prices were checked on vendor pages, September 2026.

Key facts

Updated: September 23, 2026
Top pick: Burp Suite Professional (best for: Web app testers who need the scanner, full Intruder, and Collaborator)
Top pick price as of September 23, 2026: Burp Suite Professional: Buy button $499 per user, terms of 1 to 5 years, and one subscription cannot be shared.

10 tools compared: Burp Suite Professional, Nessus Professional, Metasploit, Nmap, OWASP ZAP, Kali Linux, ProjectDiscovery Nuclei and Neo, Pentest-Tools.com, Invicti Agentic Pentest, Cobalt
Nessus Professional (best for: Consultants running a commercial network assessment from one scanner): From $4,790 for 1 year, per scanner, unlimited IPs, and Essentials is free and non-commercial.
Metasploit (best for: Teams that want the exploit library, and Pro only if they need the reports): Framework is free, Pro is contact sales, and the editions page publishes no USD price.
Nmap (best for: Discovery and service mapping before any exploit is attempted): Free and open source, and the nmap.org download offered on 23 September 2026 is version 7.991.

Buy Burp when the work is a web application and you need the scanner in the same proxy, and buy Nessus only when the scope is the network and the client is paying you.

A free proxy is a lab spare, and it fails when an auditor wants the scanner that Community Edition does not include.

Most shortlists mix a desktop toolkit, a scanner, and a pentest-as-a-service contract as if they were one invoice.

They are not the same invoice: the meter is a user, a scanner, an asset, an assessment, or nothing at all.

Toolradar data: the September 2026 security ranking evaluated 816 tools.

Open Burp Suite, Nessus, OWASP ZAP, Nuclei, and Invicti before a proof of concept, because those are the tools a tester installs or buys first.

Autonomous platforms with no seat price are a different shortlist, in the AI pentest guide.

How we ranked: ten tools, each read on the vendor's own site on 23 September 2026.

A public dollar figure, what the license meters, and whether the free edition is allowed on a commercial engagement set the order, and no vendor paid for placement.

A standing vulnerability management program is the vulnerability scanners guide, and the Tenable review covers the platform beyond one scanner.

Top Picks

Based on features, real-world fit, and value for money.

Best Penetration Testing Tools in 2026: 10 tools compared, updated Sep 2026
Tool	Pricing	Best for
Burp Suite Professional	Buy button $499 per user, terms of 1 to 5 years, and one subscription cannot be shared.	Web app testers who need the scanner, full Intruder, and Collaborator
Nessus Professional	From $4,790 for 1 year, per scanner, unlimited IPs, and Essentials is free and non-commercial.	Consultants running a commercial network assessment from one scanner
Metasploit	Framework is free, Pro is contact sales, and the editions page publishes no USD price.	Teams that want the exploit library, and Pro only if they need the reports
Nmap	Free and open source, and the nmap.org download offered on 23 September 2026 is version 7.991.	Discovery and service mapping before any exploit is attempted
OWASP ZAP	Free download of stable release 2.17.0, and the download page lists no paid edition.	A free intercepting proxy when Burp Professional is not in the budget
Kali Linux	Free of charge and open source, and the project says you will never have to pay for Kali Linux.	A lab or field laptop that needs the free toolkit in one install
ProjectDiscovery Nuclei and Neo	Nuclei CLI is free under MIT, and Neo pay as you go starts at $200/seat/mo, up to 5 seats.	Template scans at no license fee, or a paid Neo seat for agent runs
Pentest-Tools.com	From $95/mo (NetSec, 5 assets), and yearly billing charges 10 months of that rate.	MSSPs who want a hosted scanner with a public monthly asset price
Invicti Agentic Pentest	Agentic assessment $500 maximum, and the DAST platform pricing page prints no dollar amount.	A web assessment with a printed cap when the platform quote can wait
Cobalt	Credit tiers are quote-only, and the autonomous web test promo is $3,500 per test.	A human-led pentest program, or the promotional autonomous web test

Pricing read from each vendor's own published pricing page, checked Sep 2026. Every vendor here publishes a price.

Lowest monthly figure each vendor publishes, checked Sep 2026. A tilde marks a figure the vendor states approximately. Per-seat and usage charges can sit on top of it. 7 of 10 do not publish a comparable monthly price and are left out rather than estimated.

Burp Suite Professional

Top Pick

Best for: Web app testers who need the scanner, full Intruder, and Collaborator

PricingBuy button $499 per user, terms of 1 to 5 years, and one subscription cannot be shared.

+The community download page keeps the web vulnerability scanner, full Intruder, project files, and Burp Collaborator on Professional, not on Community, so the free download cannot carry that web test.

+PortSwigger's reseller FAQ prices Pro per user, offers 1 to 5 year terms, and gives no discount for more licenses or a longer term, so headcount multiplies the button price.

+The scanner page says Burp Scanner is used by over 70,000 users across more than 16,000 organizations, in both Professional and DAST, so that count does not include DAST in the button price.

−You cannot share one Professional subscription, even if only one person is in the tool at a time, which is why a five-person team buys five seats.

−Burp Suite DAST is a separate quote sent to [email protected], so the button price is not an enterprise scanner fleet.

Visit Burp Suite Professional →

Nessus Professional

Best for: Consultants running a commercial network assessment from one scanner

PricingFrom $4,790 for 1 year, per scanner, unlimited IPs, and Essentials is free and non-commercial.

+Tenable's comparison gives Professional unlimited IPs, real-time plugin updates, compliance checks, and commercial use. Essentials is a different column, so a paid client test cannot use it.

+The Professional page lists a 2-year license at $9,330.95 and a 3-year license at $13,637.54, below a straight multiple of the 1-year line, so multi-year is the only published discount.

+Nessus Expert, at $6,790 on the buy page, adds web app scanning and external attack surface discovery when the same scanner has to touch web apps.

−Essentials is a 30-day non-commercial license for up to 5 IPs, with plugin updates delayed 30 days, so a paid client test cannot sit on it.

−Advanced Support is $400 on the Professional page, for 24x365 phone, email, community, and chat, and it is not in the scanner license.

Visit Nessus Professional →

Metasploit

Best for: Teams that want the exploit library, and Pro only if they need the reports

PricingFramework is free, Pro is contact sales, and the editions page publishes no USD price.

+Both columns on Rapid7's comparison are checked for more than 1,500 exploits and for importing a network data scan, so the free edition is not a smaller library.

+Framework is the column checked for a command line, manual exploitation, and manual credential brute forcing, which means the tester drives every step.

+Pro is the column checked for a web interface, baseline reports, task chains, and automated credential brute forcing, which is what the quote buys.

−Rapid7 publishes no USD price for Pro and routes it to contact sales, so the report-ready edition cannot be budgeted from the website.

−Network discovery, the web interface, and baseline reports are on Pro and not on Framework, so the free edition is the manual half.

Visit Metasploit →

Nmap

Best for: Discovery and service mapping before any exploit is attempted

PricingFree and open source, and the nmap.org download offered on 23 September 2026 is version 7.991.

+The project describes Nmap as a free and open source utility for network discovery and security auditing, so the first map of a scope needs no license.

+Version 7.991 is the current download the homepage linked, which is the build to cite if a client asks what you ran.

+A Zenmap GUI is part of the same project, so the first pass does not need a paid console.

−Discovery is not an engagement report, so you still need a second tool to exercise a web issue or write the findings a client expects.

−The homepage sells no support contract and no per-seat license, so a broken scan is yours to diagnose.

Visit Nmap →

OWASP ZAP

Best for: A free intercepting proxy when Burp Professional is not in the budget

PricingFree download of stable release 2.17.0, and the download page lists no paid edition.

+ZAP 2.17.0 publishes Windows, Linux, and macOS installers, plus a cross-platform package, with no license fee, so a second tester does not add a seat.

+Docker images include a stable tag and a bare tag aimed at CI, so a pipeline does not need the desktop installer.

+The macOS installer includes Java 17, while other builds need Java 17 or higher, which is the dependency to check before you hand over an image.

−Releases are unsigned, with Windows and macOS warnings, and the project supports only the latest full release, so a frozen older build is unsupported.

−Weekly builds can be broken or only partly implemented, so they are not the build for a client engagement.

Visit OWASP ZAP →

Kali Linux

Best for: A lab or field laptop that needs the free toolkit in one install

PricingFree of charge and open source, and the project says you will never have to pay for Kali Linux.

+Kali's introduction says it is free of charge, always will be, and is open source and Debian-based, so the operating system will not become a line item.

+The same page says it is built for penetration testing and security auditing and runs on multiple platforms, which is why it is the field laptop.

+The source tree is public, so a team that must rebuild a package can do that without a vendor seat.

−A distribution is not a scoped test or a report, and the tools inside it keep their own licenses, caps, and commercial bans.

−There is no vendor support contract on the introduction page, so you own the updates, the hardware, and the image you hand a tester.

Visit Kali Linux →

ProjectDiscovery Nuclei and Neo

Best for: Template scans at no license fee, or a paid Neo seat for agent runs

PricingNuclei CLI is free under MIT, and Neo pay as you go starts at $200/seat/mo, up to 5 seats.

+The Nuclei repository publishes an MIT license and grants use free of charge, which is the CLI and not Neo, so template scans do not need a seat.

+Pay as you go starts at $200 per seat per month for up to 5 seats, after a free seat with limited one-time usage and no card, so an extra person is not on that checkout.

+Annual billing is 12.5% under monthly, at $2,100, $4,200, or $8,400 per seat per year, while the allowance still resets every 7 days.

−Unused allowance does not roll over, and a running task pauses when it is gone, until a top-up or the next 7-day reset.

−SSO, on-prem or a dedicated VPC, and more than 5 seats are an Enterprise quote, so a larger team cannot stay on the published seat rate.

Visit ProjectDiscovery Nuclei and Neo →

Pentest-Tools.com

Best for: MSSPs who want a hosted scanner with a public monthly asset price

PricingFrom $95/mo (NetSec, 5 assets), and yearly billing charges 10 months of that rate.

+At 5 assets the page lists NetSec from $95/month, WebNetSec from $140/month, and Pentest Suite from $190/month, and yearly billing is 10 months of that rate.

+Pentest Suite adds the Sniper CVE exploiter, SQL injection and XSS exploiters, a DOCX report, and Burp Suite import, which is the tier when the client wants a document.

+Paid plans include unlimited team members, API access, and a 10-day money-back window, as of the page's 17 September 2026 update.

−An asset is one hostname or IP, and subdomains count separately, so a 5-asset start is a small external scope, not a full range.

−Internal network scanning is an optional add-on with no printed price, and new customers can pick US or Europe hosting from 4 August 2026.

Visit Pentest-Tools.com →

Invicti Agentic Pentest

Best for: A web assessment with a printed cap when the platform quote can wait

PricingAgentic assessment $500 maximum, and the DAST platform pricing page prints no dollar amount.

+The agentic product page says reports arrive in 24 hours, mapped to the OWASP Top 10, which is the turnaround for a release window.

+Every finding is confirmed exploitable before it is reported, so you are not handed a raw scanner dump.

+The page prints a dollar figure and does not spell out a USD label, so confirm the currency before you treat the cap as the invoice amount.

−Invicti's own FAQ says manual pentesting remains valuable for some compliance requirements, so the cap does not retire a human test a regulator still wants.

−The AppSec platform pricing page prints no dollar amount, so the assessment cap is not the scanner subscription.

Visit Invicti Agentic Pentest →

Cobalt

Best for: A human-led pentest program, or the promotional autonomous web test

PricingCredit tiers are quote-only, and the autonomous web test promo is $3,500 per test.

+Standard, Premium, and Enterprise are each marked get a quote, and the comparison includes a methodology checklist, retesting, and attack surface monitoring, so you are buying a program.

+The tiers list a start within 3 business days on Standard, 2 on Premium, and 1 on Enterprise, with 1 target included, which is the clock and the scope for a statement of work.

+Cobalt Autonomous Pentest is listed at $3,500 per test as a limited-time offer, with findings in 24 hours and a Core pentester on the engagement.

−The credit contract is not the promotional sticker, and credits debited can follow your contracted rate, so the promo is not the Standard rate.

−The promo must be initiated and completed before 31 December 2026, and Standard's credit pool is 6 months, not 12.

Visit Cobalt →

What it is

A penetration testing tool is software a tester uses to discover hosts, probe an application, and show that a weakness can be exercised, inside a scope the owner approved.

A scanner that only lists CVEs is a different product, because a list of findings is not proof the issue can be used.

The split that matters on the invoice is who may use the free edition.

Nessus Essentials is non-commercial, so a paid client test cannot sit on it, and Burp Community omits the scanner, so it cannot stand in for the paid proxy.

Kali, Nmap, ZAP, and Nuclei publish no license fee, which fits when software spend stays at zero and a human still signs the report.

A primer on the engagement itself is Dupple's explanation of penetration testing.

Human-led testing sold as a platform, which is what Cobalt sells, is a contract with a start-time and a credit pool, not a binary you install on a laptop.

API work that stays in the proxy is covered in the API security tools guide.

Why it matters

The scanner bill does not move like a seat license. Nessus Professional is one license for one scanner and unlimited IPs, so a second tester on the same engine is not a second seat.

Tenable One Vulnerability Management, listed at $3,700 for up to 250 assets on the buy page, is a program rather than that scanner.

Cyberpresso data: 27,000 security readers receive this brief, and the audience file updated 20 September 2026 puts the open rate at 28%.

They name a toolkit before the next client scope is signed, so a quote with no dollar on it is a number they cannot defend.

The Cyberpresso brief is where later price changes show up.

Pair the toolkit with a secrets manager for the credentials the test uses, and with a password manager for accounts that must not sit in a shared note.

Findings that have to be watched after the report belong in a SIEM, not in another copy of the exploit tool.

Key features to look for

What the license meters

A user, a scanner, an asset, an assessment, or a credit is the unit on the invoice, and the wrong unit turns a small scope into a second contract.

What the free edition cuts

Burp Community drops the scanner and full Intruder, so it is not the web engagement, and a free Nessus license can still ban commercial work. Nuclei's CLI is free, and the Neo seat is the paid product.

Whether it exploits or only lists

Nmap and a vulnerability scan name what is exposed, which is discovery rather than proof. Metasploit, Burp, ZAP, and Pentest Suite are where a tester shows the issue can be exercised.

Who signs the report

A desktop tool does not staff the engagement, so your side still writes the report. Cobalt sells the people and a start-time, while Invicti's printed cap is one web test, not a platform subscription.

Pricing

Dollar figures below were read on 23 September 2026 from PortSwigger, Tenable, Rapid7, ProjectDiscovery, Pentest-Tools.com, Invicti, Cobalt, Nmap, ZAP, and Kali.

Select US Dollar on PortSwigger's order form: it offers US Dollar, Euro, and British Pound, and it can open with Euro already selected.

Two times the Nessus one-year license is $9,580, and the published two-year price is $9,330.95, so multi-year is the only discount on that scanner.

Three times that one-year license is $14,370, and the published three-year price is $13,637.54, the same discount stretched one more year.

Essentials Plus is a separate non-commercial line, so a client test still cannot use it.

Pentest-Tools.com yearly billing charges 10 months of the monthly rate, so 5 assets is $950, $1,400, or $1,900 depending on the plan.

That site and Invicti print dollar amounts without a USD label, so confirm the currency before you pay.

Neo's $800 seat is five times the base weekly allowance, and the middle allowance is twice the base.

Quote-only lines are Burp Suite DAST, Metasploit Pro, Neo Enterprise, the Invicti platform, and Cobalt's Standard, Premium, and Enterprise credit tiers.

The Cobalt autonomous offer is the exception with a printed per-test price, and it expires if the work is not finished in 2026.

Plan	Price	Best for
Burp Suite Professional	$499 buy button	Per user, with 1 to 5 year terms, no discount for more users, and not shareable.
Burp Suite Community	Free	Proxy, Repeater, Decoder, Sequencer, and Comparer. Intruder is a demo and there is no scanner.
Burp Suite DAST	Quote only	Separate product, and the reseller FAQ sends quotes to [email protected].
Nessus Essentials	Free	Non-commercial, up to 5 IPs, on a 30-day license, with plugin updates delayed 30 days.
Nessus Essentials Plus	$199/year	Non-commercial, up to 20 IPs, and free for verified students and instructors.
Nessus Professional, 1 year	$4,790	One scanner, unlimited IPs, commercial use, and real-time plugins.
Nessus Professional, 2 years	$9,330.95	Two-year price on the Nessus Professional page, below a straight multiple of one year.
Nessus Professional, 3 years	$13,637.54	Three-year price on the Nessus Professional page, below a straight multiple of one year.
Nessus Advanced Support	$400	Add-on for 24x365 phone, email, community, and chat.
Nessus Fundamentals training	$275	On-demand course for 1 person, with 1 year of access.
Nessus Expert	$6,790	Adds web app scanning and external attack surface discovery on the buy page.
Tenable One Vulnerability Management	$3,700	Purchase protection for up to 250 assets, which is not the Nessus scanner.
Tenable One Web App Scanning	$6,790	1 year on the buy page, and you choose a number of FQDNs.
Metasploit Framework	Free	Command line and manual exploitation, not baseline reports.
Metasploit Pro	Quote only	Contact sales, and no USD price on the editions page.
Nmap 7.991	Free	Open source network discovery from nmap.org.
OWASP ZAP 2.17.0	Free	Java 17 or higher, except the macOS installer, which includes Java 17, and the builds are unsigned.
Kali Linux	Free	Open source, Debian-based, and always free of charge.
Nuclei CLI	Free	MIT license for the CLI, not the Neo subscription.
Neo Free	Free	One seat, limited one-time usage, and no card.
Neo pay as you go	$200/seat/mo	Base weekly allowance, up to 5 seats, reset every 7 days, and no rollover.
Neo, five times the allowance	$800/seat/mo	Same workflows and frontier models, with a higher weekly allowance.
Neo annual, base	$2,100/seat/yr	12.5% under monthly, and the allowance still resets every 7 days.
Neo annual, middle allowance	$4,200/seat/yr	Annual price for twice the base weekly allowance.
Neo annual, top self-serve	$8,400/seat/yr	Annual price for five times the base weekly allowance.
Neo Enterprise	Custom quote	SSO, on-prem or a dedicated VPC, and unlimited seats, on a quote.
Pentest-Tools.com Free	Free	Up to 5 scanned assets, 90-day history, and limited tools.
Pentest-Tools.com NetSec	$95/mo	Starting price at 5 assets for network, cloud, and recon, and yearly billing is 10 months.
Pentest-Tools.com WebNetSec	$140/mo	5 assets, plus DAST, API scanning, and authenticated web scans.
Pentest-Tools.com Pentest Suite	$190/mo	5 assets, plus exploiters, Burp import, a DOCX report, and 2-year history.
NetSec yearly, 5 assets	$950	Ten months of the monthly rate, from the yearly rule on the pricing page.
WebNetSec yearly, 5 assets	$1,400	Ten months of the monthly rate at the 5-asset WebNetSec start.
Pentest Suite yearly, 5 assets	$1,900	Ten months of the monthly rate at the 5-asset Pentest Suite start.
Pentest-Tools.com internal scanning	Not printed	Optional add-on on paid plans, and the cards do not list a dollar amount.
Invicti Agentic Pentest	$500 max	Per assessment on the agentic page, not a platform seat.
Invicti AppSec platform	Quote only	The platform pricing page prints no dollar amount.
Cobalt Standard, Premium, Enterprise	Quote only	Start in 3, 2, or 1 business days, with 1 target, and the credit price is a quote.
Cobalt Autonomous Pentest promo	$3,500 per test	Limited time, and the test must start and finish before 31 December 2026.

Mistakes to avoid

×Running a paid client engagement on Nessus Essentials fails the license, because that edition is non-commercial, capped at 5 IPs, and the plugin feed is delayed.

×Buying one Burp subscription for a team because people take turns still breaks the license, since PortSwigger says every user needs a subscription and the reseller FAQ gives no discount as the headcount grows.

×Treating Cobalt's promotional per-test price as the credit-tier contract will understate the bill, because Standard, Premium, and Enterprise are still get-a-quote, and the credit debit can follow your contracted rate.

Expert tips

→Price a five-person web team as five Burp subscriptions, then price the network pass as one Nessus scanner rather than five seats, because those meters do not match.

→Keep the test credentials in a <a href="/reviews/best-secrets-management-tools">secrets manager</a>, and keep the jump host off the same note as production admin, because a test laptop is a target of its own.

→Use the <a href="/reviews/best-network-security-monitoring-tools">network security monitoring guide</a> when the question is whether the SOC saw the test, and the <a href="/reviews/best-cloud-security-posture-tools">cloud security posture guide</a> when the scope is misconfiguration rather than an exploit.

→If the board asked for an autonomous product and the quote has no dollar on it, read the <a href="/reviews/best-ai-for-penetration-testing">AI pentest guide</a> before you add another desktop seat.

The bottom line

Burp Suite Professional is the buy when the work is a web application and you want the scanner in the same proxy.

Pay the button price once per person, pick US Dollar on the order form, and do not share the seat.

Choose Nessus Professional when the commercial scope is the network and one scanner can cover it, since a second tester on that engine is not a second seat.

Choose Tenable One only after you leave a point-in-time test for an asset-priced program, which the Tenable review covers.

Stay on Metasploit Framework, Nmap, ZAP, Kali, and Nuclei when the license fee has to be zero and a human will still write the report.

Move to Neo, Pentest-Tools.com, or Invicti's assessment when you want a published paid meter.

Choose Cobalt when you are buying testers and a start-time, and treat the autonomous sticker as a dated promo.

The Cyberpresso brief is the daily note for the people who have to defend this budget. Cite this: Cyberpresso, "Best Penetration Testing Tools in 2026", September 2026.

Frequently asked questions

What is the best penetration testing tool in 2026?

Burp Suite Professional is the best fit for a web application test in 2026, because the scanner, full Intruder, project files, and Burp Collaborator are on that edition and not on Community. The buy button is the price in the table, the license is per user, and it cannot be shared, so a rotating login does not save a seat. Nessus Professional fits better when the job is a network scanner rather than a proxy, checked on vendor pages, 23 September 2026.

How much does penetration testing software cost?

Burp's buy button is $499 per user, with 1 to 5 year terms and no volume discount, so headcount multiplies that button. Nessus Professional is $4,790 for one year per scanner, one engine rather than a seat per tester. Neo starts at $200 per seat per month, and Invicti's agentic page caps one assessment at $500, a single web test and not the platform. Cobalt's autonomous promo is $3,500 per test if the work finishes before 31 December 2026, and that sticker is not the credit contract. Metasploit Pro, Burp Suite DAST, and Cobalt's credit tiers publish no USD price. Pentest-Tools.com starts at $95 a month for NetSec at 5 assets.

Is there a free penetration testing tool?

Yes, several tools are free downloads: Nmap 7.991, OWASP ZAP 2.17.0, Kali Linux, the Nuclei CLI, Metasploit Framework, and Burp Community. Nessus Essentials is free only for non-commercial use, up to 5 IPs, on a 30-day license, so it cannot carry a paid client test. Essentials Plus is $199 a year for up to 20 IPs unless you are a verified student or instructor. None of the free Nessus licenses is the commercial scanner.

Burp Suite vs OWASP ZAP: which should a tester buy?

Buy Burp Suite Professional when the engagement needs the scanner, full Intruder, saved project files, and Burp Collaborator. Stay on ZAP 2.17.0 when the license budget is zero and you can live with unsigned installers, a Java 17 requirement, and support only for the latest full release. ZAP's download page lists no paid edition, and Burp Community is closer to ZAP than to Professional because the scanner is not in it.

Is Nessus a penetration testing tool?

Nessus Professional is the scanner for a point-in-time commercial assessment, with unlimited IPs on one scanner license, so a second person on that engine is not a second invoice. It does not replace a web proxy or an exploit framework. A vulnerability management program is a different purchase, covered in the vulnerability scanners guide, and the Tenable review covers the platform beyond Professional. Essentials cannot be used for a paid client test.

Does Metasploit Pro have a public price?

No, Rapid7's editions page sends Metasploit Pro to contact sales and does not print a USD price, so you cannot budget the report edition from the website. Framework is the free column, checked for a command line and manual exploitation. Pro is checked for the web interface, baseline reports, task chains, and automated credential brute forcing. Both columns are checked for more than 1,500 exploits, so the quote is not a larger library.

What is the difference between Cobalt and a tool you run yourself?

Burp, Nessus, Nmap, ZAP, Kali, and Nuclei are software you operate, and your staff still writes the report. Cobalt Standard, Premium, and Enterprise are quote-only contracts with a pentester start-time, from 3 business days down to 1, and 1 target on the comparison. The autonomous web test at the promotional per-test price is a separate dated offer, and the credit debit can still follow your contracted rate. It does not replace the desktop license if your own staff does the test.

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