Best Free Vulnerability Scanners of 2025

Aikido Security

Secure your stack with Aikido's code-to-cloud security platform. Find and fix vulnerabilities fast & automatically. Aikido's all-in-one approach combines multiple important scanning capabilities. SAST, DAST, SCA, CSPM, IaC, Container scanning and more - making it a true ASPM platform.

103 Ratings

Starting Price: Free

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Panoptic Scans

Panoptic Scans is a vulnerability scanning software offering automated security assessments for applications and networks. Leveraging OpenVAS, ZAP, and Nmap, it identifies security issues and scans for OWASP Top 10 vulnerabilities, delivering detailed reports for easy remediation. The Attack Narratives feature illustrates how weaknesses can be exploited in combination by attackers. Scheduled scanning ensures consistent monitoring without manual effort, while OpenVAS and ZAP provide thorough network and application security testing. The platform includes a user-friendly interface, email notifications, and fully managed scanners, removing server maintenance concerns. It supports white-label reporting and ensures reliable performance through its managed infrastructure.

Starting Price: $25/month

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GitGuardian

GitGuardian is an end-to-end NHI security platform that empowers software-driven organizations to enhance their Non-Human Identity (NHI) security and comply with industry standards. With attackers increasingly targeting NHIs, such as service accounts and applications, GitGuardian integrates Secrets Security and NHI Governance. This dual approach enables the detection of compromised secrets across your dev environments while also managing non human identities and their secrets lifecycle. The platform supports over 450+ types of secrets, offers public monitoring for leaked data, and deploys honeytokens for added defense. Trusted by over 600,000 developers, GitGuardian is the choice of leading organizations like Snowflake, ING, BASF and Bouygues Telecom for robust secrets protection.

32 Ratings

Starting Price: $0

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Crashtest Security

Crashtest Security is a SaaS-based security vulnerability scanner allowing agile development teams to ensure continuous security before even hitting Production. Our state-of-the-art dynamic application security testing (DAST) solution integrates seamlessly with your dev environment and protects multi-page and JavaScript apps, as well as microservices and APIs. Set up Crashtest Security Suite in minutes, get advanced crawling options, and automate your security. Whether you want to see vulnerabilities within the OWASP Top 10 or you want to go for deep scans, Crashtest Security is here to help you stay on top of your security and protect your code and customers.

5 Ratings

Starting Price: €35 per month

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Defendify

Founded in 2017, Defendify is pioneering All-In-One Cybersecurity® for organizations with growing security needs, backed by experts offering ongoing guidance and support. Delivering multiple layers of protection, Defendify provides an easy-to-use platform designed to strengthen cybersecurity across people, process, and technology, continuously. Defendify streamlines cybersecurity assessments, testing, policies, training, detection, response, and containment in one consolidated and cost-effective cybersecurity solution. 3 layers, 13 solutions, 1 platform, including: • Managed Detection & Response • Cyber Incident Response Plan • Cybersecurity Threat Alerts • Phishing Simulations • Cybersecurity Awareness Training • Cybersecurity Awareness Videos • Cybersecurity Awareness Posters & Graphics • Technology Acceptable Use Policy • Cybersecurity Risk Assessments • Penetration Testing • Vulnerability Scanning • Compromised Password Scanning • Website Security Scanning

1 Rating

Starting Price: $0

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Haltdos

Haltdos promises an intelligent WAF & DDoS mitigation service with multi-layered security to online businesses requiring zero management. It is a self-learning solution that continuously learns and adapts network/website traffic and provides real-time and historical insights with stunning visualization. It also provides attack alerts and notifications, attack signatures, customer misbehavior, and audit trail.

1 Rating

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HostedScan

Scan networks, servers, and websites for security risks. Manage your risks via dashboards, reporting, and alerts. Build scheduled vulnerability management into your information security practice. When a new port is open, or a new risk is detected, automatically alert your team. Cut out the noise. Only new or unexpected risks are alerted. Add targets, run scans, and get results programmatically. Embed HostedScan into your own products and services.

1 Rating

Starting Price: $ 29 per month

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VulnSign

VulnSign is an online vulnerability scanner that is fully automated, customer-orient configurable and has advanced features. VulnSign can scan any type of web application, regardless of the technology it was built with. It uses a Chrome based crawling engine and can identify vulnerabilities in legacy, and custom built, modern HTML5, Web 2.0 applications and Single Page Applications (SPA). It also has vulnerability checks for popular frameworks. The VulnSign vulnerability scanner is very easy to use and most of the pre-scan configuration can be automated. It is an all in one vulnerability management solution, with multi user support and integration capabilities. Though to test it all you need to do is specify the URL and credentials (to scan password protected websites), and launch a vulnerability scan.

1 Rating

Starting Price: $49/month/team

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urlscan.io

urlscan.io is a free service to scan and analyze websites. When a URL is submitted to urlscan.io, an automated process will browse to the URL like a regular user and record the activity that this page navigation creates. This includes the domains and IPs contacted, the resources (JavaScript, CSS, etc.) requested from those domains, as well as additional information about the page itself. urlscan.io will take a screenshot of the page, and record the DOM content, JavaScript global variables, cookies created by the page, and a myriad of other observations. If the site is targeting the users of one of the more than 900 brands tracked by urlscan.io, it will be highlighted as potentially malicious in the scan results. Our mission is to allow anyone to easily and confidently analyze unknown and potentially malicious websites. Just like you would use a malware sandbox to analyze suspicious files, you can use urlscan.io to do the same thing but with URLs.

1 Rating

Starting Price: $500 per month

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CloudSploit

Cloud security best practices as a service. CloudSploit is the leading open source security configuration monitoring tool for cloud infrastructure. Cloud security experts from around the world collaborate to create a repository of tests for cloud infrastructure such as AWS, Azure, GitHub, and Oracle Cloud.

1 Rating

Starting Price: $7.17/month

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Probely

Probely is a web vulnerability scanner for agile teams. It provides continuous scanning of web applications and lets you efficiently manage the lifecycle of the vulnerabilities found, in a sleek and intuitive web interface. It also provides simple instructions on how to fix the vulnerabilities (including snippets of code), and by using its full-featured API, it can be integrated into development processes (SDLC) and continuous integration pipelines (CI/CD), to automate security testing. Probely empowers developers to be more independent, solving the security teams' scaling problem, that is usually undersized when compared to development teams, by providing developers with a tool that makes them more independent when it comes to security testing, allowing security teams to focus on more important and critical activities. Probely covers OWASP TOP10 and thousands more and can be used to check specific PCI-DSS, ISO27001, HIPAA, and GDPR requirements.

1 Rating

Starting Price: $49.00/month

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Swascan

It runs the scan of web sites and web applications to spot and analyze in a proactive way security vulnerabilities. The Network Scanner spots and identifies network vulnerabilities and helps you fixing them. It runs the source code analysis to highlight and solve weak spots and security vulnerabilities. The online tool that makes you evaluate the Compliance level of your company in terms of GDPR. Create a unique learning opportunity for your employees and avoid the more and more frequent phishing attacks. Consultancy activity to support companies with management, control and risk evaluation. Ransomware has been confirmed to be the threat par excellence in the global cybersecurity landscape also in Q3 of 2022. In this Webinar Swascan, Pierguido Iezzi CEO of Swascan, will show you more about the data collected, concerning the victims of the 15 Ransomware gangs active in the third quarter of 2022.

1 Rating

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YAG-Suite

YAGAAN

The YAG-Suite is a French made innovative tool which brings SAST one step beyond. Based on static analysis and machine learning, YAGAAN offers customers more than a source code scanner : it offers a smart suite of tools to support application security audits as well as security and privacy by design DevSecOps processes. Beyond classic vulnerability detection, the YAG-Suite focuses the team attention on the problems that really matter in their business context, it supports developers in their understanding of the vulnerability causes and impacts. Its contextual remediation support them in fixing efficiently the problems while improving their secure coding skills. Additionally, YAG-Suite's unprecedented 'code mining' support security investigations of an unknown application with mapping all relevant code features and security mechanisms and offers querying capabilities to search for 0-days or non automatically detectable risks. PHP, Java and Python are supported. JS, C/C++ coming soon

Starting Price: From €500/token or €150/mo

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Pentest-Tools.com

Pentest-Tools.com helps security professionals find, validate, and communicate vulnerabilities faster and with greater confidence - whether they’re internal teams defending at scale, MSPs juggling clients, or consultants under pressure. With comprehensive coverage across network, web, API, and cloud assets, and built-in exploit validation, it turns every scan into credible, actionable insight. Trusted by over 2,000 teams in 119 countries and used in more than 6 million scans annually, it delivers speed, clarity, and control - without bloated stacks or rigid workflows. ✔️ Comprehensive toolkit with real-world coverage ✔️ Validated findings rich with evidence ✔️ Automation options with granular control ✔️ Flexible, high-quality reporting ✔️ Workflow-friendly by design

Starting Price: $95 per month

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Offensity

A1 Digital

Offensity relies on ongoing monitoring instead of punctual tests. Automated processes monitor your systems and test them immediately after weak points appear. Monitoring by Offensity is not limited to individual parts of your company or to specific system components. Offensity tests company-wide and with its scanning covers the company areas holistically - no matter how hidden and forgotten. The reporting from Offensity offers technicians a clear overview of the open problems and concrete recommendations for action. And moreover, efficient decision-making bases for your management. Offensity is a European security service that uses in-depth know-how to assess how secure your company is. We work according to the latest European standards and laws.

Starting Price: €49 per month

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ZeroPath

ZeroPath is an AI-powered security platform designed to provide developers with effortless application security. By integrating seamlessly with existing CI/CD pipelines, ZeroPath enables continuous, human-level application security and pull request (PR) reviews. The platform's AI-driven code vulnerability scanning identifies and addresses issues such as broken authentication, logic bugs, and outdated dependencies. ZeroPath's methodology includes installing their GitHub app, which supports GitHub, GitLab, and BitBucket, to facilitate quick setup. The platform excels in detecting complex vulnerabilities that other scanners may overlook, offering faster security checks with fewer false positives. Instead of merely reporting bugs, ZeroPath issues PRs with patches when confident they won't disrupt the application, reducing noise and backlog growth. The platform's features encompass Static Application Security Testing (SAST), and detection of broken authentication and business logic flaws.

Starting Price: Free

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OPSWAT MetaDefender

OPSWAT

MetaDefender layers an array of market-leading technologies to protect critical IT and OT environments and shrinks the overall attack surface by detecting and preventing sophisticated known and unknown file-borne threats like advanced evasive malware, zero-day attacks, APTs (advanced persistent threats), and more. MetaDefender easily integrates with existing cybersecurity solutions at every layer of your organization’s infrastructure. With flexible deployment options purpose-built for your specific use case, MetaDefender ensures files entering, being stored on, and exiting your environment are safe—from the plant floor to the cloud. This solution uses a range of technologies to help your organization develop a comprehensive threat prevention strategy. MetaDefender protects organizations from advanced cybersecurity threats in data that originates from a variety of sources, such as web, email, portable media devices, and endpoints.

Starting Price: $0

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CyberSmart

Protecting your organization and data is hard work - let us make it easier The CyberSmart app is easily deployed and allows you to get insights into the current security status of all your devices.It takes less than 60 seconds to scan for vulnerabilities and to identify non-conformities in line with Cyber Essentials including: - The operating system is up to date - Antivirus and firewall are installed - The device is securely configured We use technology to automate the search for weaknesses in your system, so you don’t have to do it.Smart software eliminates burdensome checklists. Available for Windows, Mac, Apple App Store and Android. Your cloud-based dashboard is used to manage compliance throughout your organization. You can add new team members, check the compliance status of individual devices and fix issues within the dashboard.

Starting Price: $49 per user per month

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StackHawk

StackHawk tests your running applications, services, and APIs for security vulnerabilities that your team has introduced as well as exploitable open source security bugs. Automated test suites in CI/CD are the norm for today’s engineering teams. Why should application security be any different? StackHawk is built to check for vulnerabilities in your pipeline. Built for developers is more than a tagline. It is the ethos of StackHawk. Application security has shifted left and developers need a tool for reviewing and fixing security findings. With StackHawk, application security can keep up with the pace of today’s engineering teams. Find vulnerabilities at the pull request and quickly push out fixes, all while yesterday’s security tools are waiting for someone to kick off a manual scan. A security tool that developers love to use, powered by the world’s most widely used open source security scanner.

Starting Price: $99 per month

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Vulkyrie

More than 100,000 vulnerabilities were reported for commonly used software over the last five years. In 2019 alone, more than 22,000 were reported and 1 out of 3 was given a High or Critical severity rating. Our free vulnerability scanning can help find your security issues before the bad guys do. Our Free plan comes with no limits on the number of IP addresses and URLs, and no limits on the number of vulnerability scans you can run. Unlike free trials, free versions or community editions of other vulnerability assessment tools, you no longer have to choose between your web servers, Windows servers, network devices or virtual machines. Take the first step towards better vulnerability management without the complexity and steep learning curve. Our web-based solution provides you with an easy-to-use interface to manage your security testing. Simply add your IP address or URL to start a scan and use our portal to get the issues and recommended security measures.

Starting Price: $99 per month

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N-Stalker

N-Stalker Web Application Security Scanner X is a sophisticated Web Security Assessment solution for your web applications. By incorporating the well-known “N-Stealth HTTP Security Scanner” and its 39,000 Web Attack Signature database along with a patent-pending Component-oriented Web Application Security Assessment technology, N-Stalker is a “must have” security tool to developers, system/security administrators, IT auditors and staff. Most complete package for developers, IT security and governance professionals. It contains security checks for web application and server infrastructure. For Web Server Administrators and IT Professionals, a solution to assess security of your web server infrastructure. A community edition with a restricted set of security checks for both application and web server infrastructure.

Starting Price: $499 per year

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QuickPatch+

Imunify360

Vulnerability scanner for Plesk that provides reliability, configuration recommendations and automatic fixes for servers running Plesk control panel. Quick Patch+: Analyzes your server configuration and allows you to select and fix vulnerabilities from within the UI; Allows you to configure the automatic daily fix of all vulnerabilities, or only critical ones; Provides email and dashboard notifications for automatically fixed vulnerabilities and newly discovered critical vulnerabilities. If your website or web application’s security is compromised, it can become unresponsive, unavailable, or even dangerous. The impact on your business can be substantial. For a small monthly fee, you can protect your web server with a hands-off, automated approach.

Starting Price: $6 per server per month

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Hacker AI

Hacker AI is an artificial intelligence system that scans source code to identify potential security weaknesses that may be exploited by hackers or malicious actors. By identifying these vulnerabilities, organizations can take steps to fix the issues and prevent security breaches. Hacker AI is created by a French company based in Toulouse that uses a GPT-3 model. Please compress your project source code into a single Zip archive and upload it. Check your email, as you will receive the vulnerability detection report within 10 minutes. The Hacker AI is in the beta phase and the results it provides are not useful without the guidance of a cybersecurity expert with a background in code analysis. We do not sell or use your code source for malicious purposes. It is strictly used for the detection of vulnerabilities. If necessary, you can request a dedicated non-disclosure agreement (NDA) from us. You can also request a private instance.

Starting Price: Free

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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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garak

garak checks if an LLM can be made to fail in a way we don't want. garak probes for hallucination, data leakage, prompt injection, misinformation, toxicity generation, jailbreaks, and many other weaknesses. garak's a free tool, we love developing it and are always interested in adding functionality to support applications. garak is a command-line tool, it's developed in Linux and OSX. Just grab it from PyPI and you should be good to go. The standard pip version of garak is updated periodically. garak has its own dependencies, you can to install garak in its own Conda environment. garak needs to know what model to scan, and by default, it'll try all the probes it knows on that model, using the vulnerability detectors recommended by each probe. For each probe loaded, garak will print a progress bar as it generates. Once the generation is complete, a row evaluating that probe's results on each detector is given.

Starting Price: Free

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Seal Security

Redefine open source vulnerability and patch management with Seal Security. Easy integration directly into your existing SDLC, and workflows. Standalone security patches for immediate resolution of critical security issues. Predictable remediation and optimal resource allocation, with centralized control and reduced R&D dependency. Streamline your open source vulnerability remediation without introducing the risk of breaking changes. Say goodbye to alert fatigue and start patching with Seal Security. Pass every product security scan with confidence. Seal Security provides immediate remediation for open source vulnerabilities. By meeting your customers' SLAs and offering a vulnerability-free product, you can ensure customer trust and fortify your market standing. Seal Security seamlessly integrates with various coding languages, patch management systems, and open source platforms through powerful APIs and CLI.

Starting Price: Free

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Gecko Security

Gecko makes it possible to find 0 days that previously only humans could find. We are on a mission to automate hacker intuition and build the next generation of security tooling. Gecko is an AI-powered security engineer that finds and fixes vulnerabilities in your codebase. Gecko tests your code like a hacker and finds logical vulnerabilities that slip past other tools. Findings are verified in a secure sandbox, minimizing false positives. Gecko integrates into your environment and catches vulnerabilities as they emerge. Secure the code you ship without slowing down development. Vulnerabilities are verified and prioritized. No noise, only actual risk. Gecko creates targeted attack scenarios to test your code like a hacker. No more wasting engineering time and cost on patching vulnerabilities. Connect your existing SAST tools and integrate them into your security stack. Our optimized testing can complete comprehensive pentests in hours.

Starting Price: Free

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Trivy

Aqua Security

Trivy is a comprehensive and versatile security scanner. Trivy has scanners that look for security issues, and targets where it can find those issues. Trivy supports the most popular programming languages, operating systems, and platforms. Trivy is available in the most common distribution channels. Trivy is integrated with many popular platforms and applications. Trivy is integrated into many popular tools and applications so that you can easily add security to your workflow. Find vulnerabilities, misconfigurations, secrets, and SBOM in containers, Kubernetes, code repositories, clouds, and more.

Starting Price: Free

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Docker Scout

Docker

Container images consist of layers and software packages, which are susceptible to vulnerabilities. These vulnerabilities can compromise the security of containers and applications. Docker Scout is a solution for proactively enhancing your software supply chain security. By analyzing your images, Docker Scout compiles an inventory of components, also known as a Software Bill of Materials (SBOM). The SBOM is matched against a continuously updated vulnerability database to pinpoint security weaknesses. Docker Scout is a standalone service and platform that you can interact with using Docker Desktop, Docker Hub, the Docker CLI, and the Docker Scout Dashboard. Docker Scout also facilitates integrations with third-party systems, such as container registries and CI platforms. Reveal and dig into the composition of your images. Ensure that your artifacts align with supply chain best practices.

Starting Price: $5 per month

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Rafter

Rafter is a developer-friendly security scanning platform that lets you detect and address vulnerabilities in your GitHub repositories with a single click or command. It integrates seamlessly via a browser-based dashboard, CLI, or REST API to scan JavaScript, TypeScript, and Python code for a range of issues, including exposed API keys, SQL injection, XSS flaws, insecure dependencies, hardcoded credentials, and authentication weaknesses. Results are clearly categorized into “Errors,” “Warnings,” and “Improvements,” each offering detailed explanations, code locations, remediation steps, and formatted prompts ready to paste into AI coding assistants. You can view findings in JSON or Markdown, automate scans within CI/CD pipelines, and pull scan results directly into your workflows. Whether you prefer no-code, low-code, or full-code environments, Rafter adapts flexibly to your setup, making proactive security early in development effortless and scalable.

Starting Price: $39

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Best Free Vulnerability Scanners

Compare the Top Free Vulnerability Scanners as of October 2025

What are Free Vulnerability Scanners?

Aikido Security

Panoptic Scans

GitGuardian

Crashtest Security

Defendify

Haltdos

HostedScan

VulnSign

urlscan.io

CloudSploit

Probely

Swascan

YAG-Suite

Pentest-Tools.com

Offensity

ZeroPath

OPSWAT MetaDefender

CyberSmart

StackHawk

Vulkyrie

N-Stalker

QuickPatch+

Hacker AI

OnSecurity

garak

Seal Security

Gecko Security

Trivy

Docker Scout

Rafter

Best Free Vulnerability Scanners

Compare the Top Free Vulnerability Scanners as of October 2025

What are Free Vulnerability Scanners?

Aikido Security

Panoptic Scans

GitGuardian

Crashtest Security

Defendify

Haltdos

HostedScan

VulnSign

urlscan.io

CloudSploit

Probely

Swascan

YAG-Suite

Pentest-Tools.com

Offensity

ZeroPath

OPSWAT MetaDefender

CyberSmart

StackHawk

Vulkyrie

N-Stalker

QuickPatch+

Hacker AI

OnSecurity

garak

Seal Security

Gecko Security

Trivy

Docker Scout

Rafter

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