Compare the Top Free Penetration Testing Tools as of April 2025

What are Free Penetration Testing Tools?

Penetration testing software tools enable security professionals to test applications and IT systems to identify vulnerabilities. Penetration testing tools, sometimes known as "pen testing" tools, can simulate a hack or attack in order to test the security of a given application or system. Compare and read user reviews of the best Free Penetration Testing tools currently available using the table below. This list is updated regularly.

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    Quixxi

    Quixxi

    Quixxi Security

    Quixxi is a leading provider of mobile app security solutions that empowers enterprises and security professionals to secure their mobile applications. Quixxi is proud to be the only provider of a patented and proprietary mobile app security solution. Our services includes SCAN, SHIELD, and SUPERVISE. SCAN (SAST/DAST/WebAPI) is a comprehensive application vulnerability assessment tool that automates and integrates with the development process, providing full explanations and recommendations to identify and fix vulnerabilities. SHIELD (RASP), on the other hand, is an application shielding tool that provides baseline security controls to protect the intellectual property in mobile apps and shield them against malicious attacks by third parties with one click. SUPERVISE is a runtime application monitoring tool that enables remote disabling, messaging, security logs, and customer analytics for better app management.
    Starting Price: $29 for One-Off plan
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    HackenProof

    HackenProof

    HackenProof

    We are a web3 bug bounty platform since 2017. We help to set a clear scope (or you can do it by yourself), agree on a budget for valid bugs (platform subscription is free), and make recommendations based on your company`s needs. We launch your program and reach out to our committed crowd of hackers, attracting top talent to your bounty program by with consistent and coordinated attention. Our community of hackers starts searching for vulnerabilities. Vulnerabilities are submitted and managed via our Coordination platform. Reports are reviewed and triaged by the HackenProof team (or by yourself), and then passed on to your security team for fixing. Depending on preference, you can choose to publicly disclose any reports, once the issues are resolved. We connect business with a community of hackers from different parts of the globe.
    Starting Price: $0 per month
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    Pentest-Tools.com

    Pentest-Tools.com

    Pentest-Tools.com

    Get a hacker’s perspective on your web apps, network, and cloud. Pentest-Tools.com helps security teams run the key steps of a penetration test, easily and without expert hacking skills. Headquartered in Europe (Bucharest, Romania), Pentest-Tools.com makes offensive cybersecurity tools and proprietary vulnerability scanner software for penetration testers and other infosec pros. Security teams use our toolkit to identify paths attackers can use to compromise your organization so you can effectively reduce your exposure to cyberattacks. What you can do with Pentest-Tools.com Built by a team of experienced penetration testers, Pentest-Tools.com is a web-based platform that speeds-up the common steps performed in almost every assessment: reconnaissance, vulnerability scanning, exploitation, and report writing. Using the 20+ built-in tools, you get quick insights into targets' weaknesses so you know where to dig deeper, pop shells, and have fun.
    Starting Price: $85 per month
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    Contrast Security

    Contrast Security

    Contrast Security

    Modern software development must match the speed of the business. But the modern AppSec tool soup lacks integration and creates complexity that slows software development life cycles. Contrast simplifies the complexity that impedes today’s development teams. Legacy AppSec employs a one-size-fits-all vulnerability detection and remediation approach that is inefficient and costly. Contrast automatically applies the best analysis and remediation technique, dramatically improving efficiencies and efficacy. Separate AppSec tools create silos that obfuscate the gathering of actionable intelligence across the application attack surface. Contrast delivers centralized observability that is critical to managing risks and capitalizing on operational efficiencies, both for security and development teams. Contrast Scan is pipeline native and delivers the speed, accuracy, and integration demanded by modern software development.
    Starting Price: $0
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    EthicalCheck

    EthicalCheck

    EthicalCheck

    Submit API test requests via the UI form or invoke EthicalCheck API using cURL/Postman. Request input requires a public-facing OpenAPI Spec URL, an API authentication token valid for at least 10 mins, an active license key, and an email. EthicalCheck engine automatically creates and runs custom security tests for your APIs covering OWASP API Top 10 list Automatically removes false positives from the results, creates a custom developer-friendly report, and emails it to you. According to Gartner, APIs are the most-frequent attack vector. Hackers/bots have exploited API vulnerabilities resulting in major breaches across thousands of organizations. Only see real vulnerabilities; false positives are automatically separated. Generate enterprise-grade penetration test reports. Confidently share it with developers, customers, partners, and compliance teams. Using EthicalCheck is similar to running a private bug-bounty program.
    Starting Price: $99 one-time payment
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    OnSecurity

    OnSecurity

    OnSecurity

    OnSecurity is a leading CREST-accredited penetration testing vendor based in the UK, dedicated to delivering high-impact, high-intelligence penetration testing services to businesses of all sizes. By simplifying the management and delivery of pentesting, we make it easier for organisations to enhance their security posture and mitigate risks, contributing to a safer, more secure digital environment for everyone. Pentesting, Vulnerability Scanning and Threat Intelligence all in one platform.
    Starting Price: $9.30 per month
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    Caido

    Caido

    Caido Labs Inc.

    Caido is a modern web security toolkit designed for pentesters, bug bounty hunters, and security teams who need an efficient and customizable solution for web application testing. Caido features a powerful intercept proxy for capturing and manipulating HTTP requests, replay functionality for testing endpoints, and automation tools for handling large-scale workflows. Its sitemap visualization provides a clear view of web application structures, helping users map and navigate complex targets. With HTTPQL, users can efficiently filter and analyze traffic, while no-code workflows and a plugin system enable easy customization to fit specific testing needs. Built on a flexible client/server architecture, Caido supports local or remote hosting, allowing seamless access from anywhere. Its project management system simplifies switching between targets and eliminates the need for manual file handling, keeping workflows organized.
    Starting Price: Free
  • 8
    Praetorian Chariot
    Chariot is the first all-in-one offensive security platform that comprehensively catalogs Internet-facing assets, contextualizes their value, identifies and validates real compromise paths, tests your detection response program, and generates policy-as-code rules to prevent future exposures from occurring. As a concierge managed service, we operate as an extension of your team to reduce the burden of day-to-day blocking and tackling. Dedicated offensive security experts are assigned to your account to assist you through the full attack lifecycle. We remove the noise by verifying the accuracy and importance of every risk before ever submitting a ticket to your team. Part of our core value is only signaling when it matters and guaranteeing zero false positives. Gain the upper-hand over attackers by partnering Praetorian. We put you back on the offensive by combining security expertise with technology automation to continuously focus and improve your defensive.
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    SecurityForEveryone

    SecurityForEveryone

    SecurityForEveryone

    S4E:Shelter automatically understands the technology you have, prioritizes and performs security assessments optimized for your application without the need for technical expertise. S4E:Shelter is an automated security assessment tool that detects the tech stack of your assets and their vulnerabilities using machine learning, and offers actionable solutions to you. Your security is up to date. S4E:Solidarity is an API gateway to make the cybersecurity process easier for apps. So, developers can integrate the security process into their development cycle. S4E:Equality is a repository of more than 500 free cybersecurity assessment tools. Anyone can use these tools to detect security vulnerabilities according to their specific needs. S4E:Education is a security awareness training platform that helps you learn about the fundamentals of cybersecurity using quizzes and social engineering attacks.
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