Best Tools for Penetration Testing

Penetration tests, or pen tests as they’re colloquially known, primarily consist of hacking or cyber-attacking your own system so that you can determine if there are any vulnerabilities that can be exploited by third parties.

This process is used to strengthen a web application firewall, and it provides a great amount of insight that can be used to improve our system’s security, which is vital for any kind of organization. Pen tests simply are much more effective and efficient with the aid of specialized tools, and that’s why today we will be exploring the best ones out there.

Here is our list of the best penetration testing tools:

  1. Intruder Automated Penetration Testing (FREE TRIAL) A cloud-based subscription service that constantly scans a client’s system for vulnerabilities. The highest plan includes human-led penetration testing.
  2. Network Mapper (NMAP) Free and open-source utility for network discovery and security auditing.
  3. Metasploit Lightweight command-line tool, trusty for assessing and keeping you on top of threats.
  4. Invicti Security Scanner This package offers continuous testing, periodic vulnerability scanning, and on-demand scanning that can be used for penetration testing. This service is available for installation on Windows and Windows Server and it is also offered as a SaaS package.
  5. Acunetix Scanner Offered as a vulnerability scanner or a penetration testing tool, this service speeds up system weakness detection and can operate from an external position or within the network. Runs on Windows, macOS, and Linux or as a SaaS package.
  6. Indusface Penetration Testing Services This is a consultancy system that not only offers penetration testing tools but provides a team of white hat hackers to do the testing for you.
  7. BeEF Solid command-line tool, great for monitoring the network’s ‘open door’ – the browser – for any unusual behavior.
  8. Wireshark A trusty network protocol analyzer with a well-known user interface, packs a lot of power.
  9. w3af Python-based network protocol analyzer with similar features to Wireshark, yet very extendable.
  10. John the Ripper Great command-line password cracker to test how secure the user passwords on your network are.
  11. Aircrack mainly focuses on wifi security and known vulnerabilities.
  12. Burp Suite Pen Tester Comprehensive set of tools, great for analyzing and tracking traffic between servers and client browsers.

The objective of a pen test is not only to find vulnerable elements of your security system but also to check the compliance of your security policy in your organization, measure the awareness and scope of any security issues, and to take a look at the possibility of what disasters could befall your network in the event of a real foreign-entity cyber-attack.

See also: Courses to learn ethical hacking online

In essence, penetration testing allows you to reveal areas of weakness that you might not have otherwise considered. Often, organizations are stuck in their ways (or simply become apathetic), but pen testers offer an unbiased and fresh perspective that will result in strong improvements and the adoption of a more proactive approach.

The best Pen Testing Tools

Our methodology for selecting penetration testing tools

We examined the penetration testing tools on the market and analyzed tools based on the following selection criteria:

  • A suite of tools that offer a range of functions from one console
  • A mix of task automation and tools to support manual actions
  • Systems that will automatically log all actions to take the burden of note-taking off the technician
  • Automated test reporting
  • Tools that offer specialized hacking facilities for specific types of IT systems, such as networks, wireless systems, or operating systems.
  • A free trial or a money-back guarantee to provide a no-risk assessment of paid tools or tools that are free.
  • A good mix between low price and powerful capabilities – value for money.

Given that a penetration test is meant to provide such important information, its success depends on using the right tools. This is a complex task, so automated tools make it easier and more effective for testers to identify the faults. So, without further ado, here are the top 11 tools for pen testing (in no particular order), according to our in-depth analysis:

1. Intruder Automated Penetration Testing (FREE TRIAL)

Intruder - SQL Injection scan screenshot

Intruder is a cloud-based service that scans client systems for vulnerabilities. During onboarding, Intruder does a full system sweep, looking for existing vulnerabilities. After that, the Intruder service makes periodic scans of a client system, triggered by the discovery of new hacker attack vectors that have revealed new vulnerabilities.

Key Features

  • SaaS service
  • Sophisticated analysis graphics
  • Test results consolidation

Why do we recommend it?

Intruder Automated Penetration Testing is a vulnerability scanner. This service operates from the cloud and provides external scanning. Higher plans add in internal scanning through the installation of an agent. The system will also scan Web applications and cloud platforms. The system provides on-demand scanning as well as scheduled scans.

The services of Intruder are charged for on a subscription basis. There are three plan levels: Essential, Pro, and Verified. The Essential plan offers an automatic monthly vulnerability scan. With the Pro plan, customers also get the option to launch scans on demand. The Verified plan offers the monthly scan plus an on-demand facility plus human-driven penetration testing.

Who is it recommended for?

This package is a little more affordable than many of the other options on this list. However, it still would be out of reach of small businesses. This is a vulnerability scanner rather than a penetration tester, so it cuts out the expense of hiring human penetration testing experts.


  • Can perform schedule vulnerability scans automatically
  • Offered as a cloud-service, making the platform highly scalable
  • Excellent UI – great over high-level insights and detailed breakdowns
  • Offers human-powered penetration testing as a service – great for enterprise environments


  • Is an advanced security platform that can take time to fully explore

The Intruder service is available for a 30-day free trial.

Intruder Automated Penetration Testing Start 30-day FREE Trial

Related post: The Best Web Application Firewalls – Buyer’s Guide

2. Network Mapper (NMAP)

Screenshot showing nmap reporting on what hosts it has found

NMAP is a great tool for discovering any type of weakness or holes in the network of an organization. Plus, it’s also a great tool for auditing purposes. What this tool does is take raw data packets and determine which hosts are available on a particular segment of the network, what OS is in use (aka fingerprinting), and identify the different types and versions of data packet firewalls or filters that a particular host is using.

Key Features

  • Widely used by hackers
  • Useful for system audits
  • Quick command line utility

Why do we recommend it?

NMAP is a standard component of any pentesters toolkit and it is also widely used by hackers. This is because the command line system can be automated to cycle through a series of tests and it provides port scanning utilities as well as device discovery. The tool is old but it costs nothing.

Just like the name implies, this tool creates a comprehensive virtual map of the network, and it uses it to pinpoint all the major weaknesses that can be taken advantage of by a cyber-attacker.

Who is it recommended for?

If you do a pentesting course, you will be taught how to use NMAP for system reconnaissance. The tool is often included in attack viruses for lateral movement in networks. The NMAP system takes time to learn because it has many command line switches that alter its functionality.


  • Doubles as a security tool, allowing administrators to discover open ports, and applications communicating over ports that are suspicious
  • A massive open-source community, Nmap is a very popular networking tool
  • The syntax is straightforward and not difficult to learn for most users


  • Lacks a graphical user interface, however, Zenmap is available if needed

NMAP is useful for any stage of the penetration testing process. Best of all, it’s free.

Related post: Alternatives to Microsoft Baseline Security Analyzer

3. Metasploit

metasploit console

Metasploit is an exceptional tool because it’s actually a package of many pen testing tools, and what’s great is that it keeps evolving and growing to keep up with the changes that are constantly coming up. This tool is preferred by both cybersecurity professionals and certified ethical hackers, and they contribute their knowledge to the platform to help it grow, which is great. Metasploit is powered by PERL, and it can be used to simulate any kind of penetration testing you need. Plus, Metasploit is customizable and only has a process of four steps, so it’s super quick.

Key Features

  • Bundles together many tools
  • Executes tests quickly
  • Automatic reporting

Why do we recommend it?

Metasploit is widely used in the pentesting industry. The tool has a free version, called Metasploit Framework, and a paid edition, called Metasploit Pro. Unsurprisingly, the free version has a lot more users than the paid system. This tool is developed and maintained by Rapid7, which also produces a vulnerability scanner.

The features available will help you determine the prepacked exploits you should use, and it also allows you to customize them; you can also configure them with an IP address and remote port number. What’s more, you can also configure the payload with the IP address and local port number. You can then determine which payload you’d like to deploy before launching the exploit at the intended target.

Metasploit also integrates a tool called Meterpreter, which displays all results when an exploit occurs, which means you can analyze and interpret results effortlessly and formulate the strategies a lot more efficiently.

Who is it recommended for?

Every pentester learns how to use the free Metasploit. The Metasploit Pro package is very expensive and would only be of interest to security consultancies – independent testers won’t be able to afford it. This system is a collection of tools and it is frequently used in pentesting training.


  • One of the most popular security frameworks in use today
  • Has over of the largest communities – great for continuous support and up-to-date add ons
  • Available for free as well as a paid commercial tool
  • Highly customizable with many open-source applications


  • Metasploit caters to more technical users, not the best option for novice users

Related: Metasploit Cheat Sheet

4. Invicti Security Scanner

Invicti Web Security Scanner

The Invicti web application for pen testing is totally automatic. It has become very popular due to the fact that developers can use this on many different platforms for entire websites, including web services and web applications. It can identify everything pen testers need to know to make an informed diagnosis—from SQL injection to cross-site scripting.

Key Features

  • Fully automated
  • Bundle of many tools
  • Systems intelligence
  • Fast scanner
  • Automatic assessment report

Why do we recommend it?

Invicti Security Scanner is a vulnerability scanner but it can be used by penetration testers as well. Use this system to reveal a series of vulnerabilities that employ manual techniques to verify and prioritize the results. This system can be set up to run constantly and is useful for DevOps teams.

Another characteristic that makes this tool so popular is that it allows pen testers to scan up to 1,000 web apps at once while also allowing users to customize security scans to make the process robust and more efficient. The potential impact of vulnerabilities is instantly available; it takes advantage of weak points in a read-only way. This proof-based scanning is guaranteed to be effective, including the production of compliance reports among other great features, including the ability to work with multiple members for collaboration, making it easy to share findings; there’s no need to set up anything extra due to the fact that scanning is automatic.

Who is it recommended for?

Invicti has a range of applications. As well as providing vulnerability discovery automation for penetration testers, it can be deployed for Web application security scanning. The system can be used to check on live applications or run in a CI/CD pipeline as a continuous tester.


  • Highly visual interface – great for pen-testing teams, NOCs, or lone administrators
  • Color coding helps teams prioritize remediation with color coding and automatic threat scoring
  • Runs continuously – no need to schedule scans or manually run checks
  • Includes pentesting tools – great for companies with internal “red” teams
  • Comes in multiple packages, making Invicti accessible to any size organization


  • Invicti is an advanced security tool for professionals, not ideal for home users

5. Acunetix Scanner

acunetix scanner screenshot

This is another automated tool that will allow you to complete pen tests without any drawbacks. The tool can audit complicated management reports and issues, and it can handle many of the network’s vulnerabilities. It’s also capable of including out-of-band vulnerabilities. The Acunetix Scanner also integrates issue trackers and WAFs; it’s definitely the kind of tool you can rely on because it’s one of the most advanced tools in the industry. One of its crowning achievements is its exceptionally high detection rate.

Key Features

  • Automated functions
  • Results tracking
  • Covers network software
  • Checks on configurations
  • Manages test plans

Why do we recommend it?

The Acunetix Scanner is similar to Invicti in that it isn’t really a penetration testing tool but provides automated vulnerability scanning. This system provides external viewpoint scanning for Web applications. It can be linked to OpenVAS, which will run internal scans to discover network vulnerabilities.

This tool is amazing, covering more than 4,500 weaknesses. The Login Sequence Recorder is easy to use; it scans areas that are protected by passwords. The tool contains AcuSensor technology, manual penetration tools, and built-in vulnerability testing. It can crawl thousands of web pages quickly and also run locally or through cloud solutions.

Who is it recommended for?

Use the Acunetix system to speed up the penetration testing process. You could run the scanner and then work through the list of revealed weaknesses to manually verify them. Away from pentesting, this tool is regularly used for live Web application security monitoring and for continuous testing in a CI/CD pipeline.


  • Designed specifically for application security
  • Integrates with a large number of other tools such as OpenVAS
  • Can detect and alert when misconfigurations are discovered
  • Leverages automation to immediately stop threats and escalate issues based on the severity


  • Would like to see a trial version for testing

6. Indusface Penetration Testing Services

Indusface Penetration Testing

Indusface Penetration Testing Services offers the services of a white hat hacker team for you. Although this is not a “tool,” the service gives you a better test of your system security that an in-house team would probably perform. Unless you run the IT system for a very large organization, it is doubtful that your budget will stretch to a penetration testing team on staff full time. It is also unlikely that you will need penetration testing to be implemented every day of the year. Therefore, it is more cost-effective to hire an external team to perform the test for you.

Key Features:

  • Specialist white hat hacker team
  • Offsite execution
  • Recommendations for security tightening

Why do we recommend it?

Indusface Penetration Testing Services is a consultancy that offers a pentesting team. So, this is not a tool for those looking for ways to perform their own penetration testing exercises but a team that will do it all for you. The team focuses on Web application, mobile application, and API security.

External penetration testers more accurately model the attack strategies used by hackers that IT department staff. The outsiders have no assumptions and no sacred cows. They won’t worry about breaking your system in the same way that IT operation technicians do.

The Indusface service is offered in three categories:

  • Applications Penetration Testing with particular focus on Web applications.
  • Mobile Application Penetration Testing that reaches back through all supporting microservices
  • API Penetration Testing Services that ensure those plug-ins and code libraries that you deploy don’t have security flaws

The tests are performed by a human team, so there are actually no limits to the services that these consultants can perform. Therefore, there is no set menu of services or price list. The results of a penetration testing exercise from Indusface are a report of all security weaknesses that were discovered and recommendations on how to repair those flaws.

Who is it recommended for?

Penetration testing consultancies are expensive, which is why cheaper, automated vulnerability management systems have become popular. However, it is recommended that even those businesses that regularly use vulnerability scanners should also bring in a pentesting team at least once a year. However,r not all businesses can justify the expense of this strategy.


  • Leverages ethical hackers to identify threats missed by automated scans
  • Offers a subscription service to perform continuous scans – set it and forget it
  • Helps close bugs proactively and prioritize threats for your remediation team
  • Ideal for larger organizations or businesses looking to acquire or launch a new digital product


  • Caters to enterprise networks – not the best fit for smaller environments

If you don’t have the time to investigate penetration testing and you just don’t have the skills in your team, it is just a lot easier to hire an expert instead.

7. BeEF

beEF screenshot

This kind of pen-testing tool is best suited to check web browsers because it’s designed to combat web-borne attacks. That’s why it tends to benefit mobile clients the most. The best thing about this tool is that it explores weaknesses beyond the network perimeter and the client system. Just keep in mind that this is specifically for web browsers because it will look at vulnerabilities within the context of a single source. It connects with several web browsers and allows you to launch directed command modules.

Key Features

  • Browser testing
  • Good for mobile device tests
  • Comprehensive threat searches

Why do we recommend it?

The Browser Exploitation Framework (BeEF) is a free tool and it is commonly used by penetration testers. This system can be used to exploit a browser as a way into a system either for reconnaissance or to deliver a payload. You would be able to make a quick assessment of an ingress point.

Who is it recommended for?

This system could be used to load in fileless malware or a system scan. The tool is available as an API that enables it to be integrated into a more complex attack. The system has a GUI front end, which makes it easy to use for infrequent users.


  • Lightweight CLI tool for quick network threat assessments
  • Open-source code available on GitHub
  • Can run on mobile devices if desired


  • Specifically for web browsers – not an all-in-one tool

8. Wireshark

Wireshark screenshot

Wireshark is a network protocol and data packet analyzer that can fish out security weaknesses in real time. The live data can be collected from Bluetooth, Frame Relay, Ipsec, Kerberos, IEEE 802.11, any connection based on Ethernet, and more.

Key Features

  • Reliable and widely used
  • Exposes packet header details
  • Presentable results reports

Why do we recommend it?

Wireshark is another key tool for penetration testers. You will need to be able to master the system’s complicated filtering and querying language to get the best out of it. This is a white box testing tool because you have to be inside the network to get the best out of it.

The greatest advantage this tool has to offer is that the results of the analysis are produced in such a way that even clients can understand them at first glance. Pen testers can do so many different things with this tool, including color coding, to enable a deeper investigation, and to isolate individual data packets that are of top priority. This tool comes in quite handy when it comes to analyzing security risks inherent to information and data posted to forms on web-based apps.

Who is it recommended for?

Everyone will need to be familiar with how Wireshark works because it can often help reveal insider info, such as unencrypted passwords and files in transit. Its use is required in many pen testing exams. The tool is free to use and is available for Windows, macOS, and Linux.


  • Features a large open-source community that continuously improves the tool
  • Built by security professionals, for security professionals
  • Can save captured packet data for further analysis – ideal for SIEM


  • Collects a massive amount of data that requires filtering – not the best option for novice users

Related: Wireshark Cheat Sheet

9. w3af (The Web Application Attack and Audit Framework)

w3af screenshot

This penetration-testing suite was created by the same developers of Metasploit, and its objective is to find, analyze, and exploit any security weakness that may be present in web-based applications. The package is complete and features many tools, including user-agent faking, custom headers to requests, DNS cache poisoning or DNS spoofing, and many other attack types.

Key Features

  • A suite of tools
  • Covers all aspects of network vulnerabilities
  • Allows test parameter reuse

Why do we recommend it?

Like all the best penetration testing tools, W3af is free to use and runs on Linux. However, it isn’t part of Kali Linux. Use this tool to look for cross-site scripting (XSS), SQL injection, or password-cracking opportunities. This is an expandable and customizable tool – it is written in Python.

What makes W3AF such a complete tool is that the parameters and variables can be quickly saved into a Session Manager file. This means that they can be reconfigured and reused quickly for other pen tests on web apps, thus saving you a lot of time because you won’t have to re-enter all the parameters and variables every time you need them. Plus, the results of the test are displayed in graphic and text formats that make it easy to understand.

Yet another great thing about the app is that the database includes the best-known threat vectors and customizable exploit manager so that you can execute attacks and exploit them to the maximum.

Who is it recommended for?

All penetration testers would benefit from this tool. It is able to identify more than 200 exploits in Web applications and authentication exchanges. This program costs nothing, making it a very cheap and effective alternative to many of the pricey Web application security testing packages on the market.


  • Geared towards auditing and penetration testers
  • Offers a suite of tools covering vulnerabilities and exploitation
  • Runs as a lightweight utility


  • Designed for security professionals – not the best fit for home networks

10. John the Ripper

john the ripper

This is a well-known tool and is an extremely elegant and simple password cracker. This tool allows you to determine any unknown weaknesses in the database, and it does this by taking text string samples from a word list of complex and popular words that are found in the traditional dictionary and encrypting them in the same format as the password that’s being tampered with. Simple and effective, John the Ripper is a highly recommended addition to the toolkit of any well-prepared pen tester.

Key Features

  • Widely used by hackers
  • Command line tool
  • Password cracker

Why do we recommend it?

John the Ripper is a component of Kali Linux, which shows that it is on the Offensive Security approved tools list. This system is a little dated but it keeps attracting a following because it is very good at password cracking. You can use your own dictionary with the command.

Who is it recommended for?

If you need to check on credentials security, you will need this tool. The package is free to use and runs on Linux, Windows, and macOS. There is a paid version available but it is the same program but easier to install. John the Ripper Pro is only available for Linux and macOS.


  • A simple tool for password hardening
  • Is extremely lightweight – a great addition to security tool-kits
  • Allows sysadmin to identify weak passwords in their organization


  • Lacks a graphical interface for visual reporting

11. Aircrack


Aircrack is a must-have tool to detect flaws inside wireless connections. Aircrack does its magic by capturing data packets so that the protocol is effective in exporting through text files for analysis. It’s supported by different operating systems and platforms, and it offers a great array of tools that will allow you to capture packets and export data, test WiFi devices and driver capabilities, and many other things.

Key Features

  • Essential tool for wireless pen testing
  • Exportable results
  • Analyzes WiFi

Why do we recommend it?

Aircrack-ng is a penetration-testing staple for wireless networks. It is widely used by hackers, because not only can it detect wireless network signals but it can crack passwords for access. You might also consider OpenWIPS-ng, which was created by the same person and is officially an intrusion prevention system.

Who is it recommended for?

If you need to investigate and probe wireless networks, this is one of the best tools around – even though it is quite old now. The tool is free to use and will run on Windows, Linux, Unix, and macOS. You can use this system to capture packets and then analyze them in other tools.


  • Focuses heavily on wireless security – great for routine audits or field pen tests
  • One of the most widely supported wireless security tools
  • Can audit WiFi security as well as crack weak wireless encryption


  • Focuses exclusively on wireless security – not an all-in-one tool

12. Burp Suite Pen Tester

Burp Suite

This tool contains all the essentials to successfully perform scanning activities and advanced penetration testing. It this fact that makes it ideal to check web-based apps, because it contains tools to map the attack surface and analyze requests between destination servers and the browser. It does so by using web-penetration testing on a Java platform. It’s available on numerous different operating systems, including Windows, Linux, and OS X.

Key Features

  • More than adequate for performing scans
  • Great for web-based apps
  • Favorite for testing Java

Why do we recommend it?

Burp Suite Pen Tester is another popular tool. It is very easy to use and you get the lower package for free. The higher functions are visible in the free tool but they are disabled. This does you a favor because the higher service is actually a vulnerability scanner.

Who is it recommended for?

Every penetration tester should get Burp Suite. However, the full version is very expensive. The free tool gives you all of the systems you need to operate as a penetration tester and its high price makes it only accessible to consultancies. The interface provides both data-gathering tools and attack systems.


  • A collection of security tools designed specifically for security professionals
  • The Community Edition is free – great for small businesses
  • Available cross-platform for Windows, Linux, and Mac operating systems


  • Takes time to explore all the tools available in the suite


Pen testing is extremely important for the integrity of security systems in any kind of organization, so choosing the right tool for each individual job is essential. The ten tools presented here today are all effective and efficient for what they were designed to do, which means they will allow pen testers to do the best possible job to provide organizations with the information and forewarning they need. The goal here is to strengthen systems and eliminate any vulnerability that will compromise system integrity and security.

Penetration Testing FAQs

Which are the best free pen testing tools?

The best free tools for pen testing are:

  1. Nmap
  2. Wireshark
  3. Metasploit
  4. BeEF
  5. W3af

What are the main penetration testing methodologies?

Penetration testing requires white hat hackers to try to break into a system by any means possible. This is an intuitive art but methods fall into four categories:

  1. External methods: Try to break into a network from a remote location
  2. Internal methods: Activities that can be performed once in the system, modeling an insider threat or an advanced persistent threat.
  3. Web application methods: Using widgets and APIs in websites to access private systems.
  4. Social engineering methods: Using phishing and doxing to trick system users into disclosing access credentials.