List of the Top 10 Free Dynamic Application Security Testing (DAST) Software in 2025

Enhance the security of your technology stack with Aikido's comprehensive code-to-cloud protection system. Quickly identify and remedy vulnerabilities with automation. Aikido's Dynamic Application Security Testing (DAST) tool highlights the most at-risk areas of your application, enabling you to address security weaknesses proactively before they can be exploited by malicious actors. Keep a close watch on your applications and APIs to detect threats such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF) — leveraging both surface-level scanning and authenticated DAST techniques.

GitLab serves as a comprehensive DevOps platform that provides an all-in-one CI/CD toolchain, simplifying the workflow for teams. With a singular interface, unified conversations, and a consistent permission model, GitLab transforms collaboration among Security, Development, and Operations teams within a single application. This integration leads to significant reductions in development time and costs, minimizes application vulnerabilities, and accelerates software delivery processes. Furthermore, it enhances developer productivity by facilitating source code management that promotes collaboration, sharing, and coordination among the entire software development team. To expedite software delivery, GitLab enables efficient tracking and merging of branches, auditing of changes, and supports concurrent work efforts. Teams can review code, engage in discussions, share knowledge, and pinpoint defects, even in distributed settings, through asynchronous review processes. Additionally, the platform automates and tracks code reviews, generating reports that enhance transparency and continuous improvement in the development cycle. By offering these robust features, GitLab not only streamlines operations but also fosters a culture of collaboration and efficiency within development teams.

Crashtest Security is a SaaS security vulnerability scanner designed to help agile development teams maintain ongoing security throughout the development process, even prior to production deployment. Featuring a cutting-edge dynamic application security testing (DAST) solution, it integrates effortlessly into your development ecosystem while safeguarding multi-page and JavaScript applications, as well as microservices and APIs. Setting up the Crashtest Security Suite takes only a few minutes, and it offers advanced crawling capabilities along with the option to automate your security measures. By providing insights into vulnerabilities listed in the OWASP Top 10, Crashtest Security empowers you to protect both your code and your customers effectively. This proactive approach to security helps teams to identify and mitigate risks early in the software development lifecycle.

VulnSign is a fully automated online vulnerability scanning tool that allows customers to configure its advanced features according to their needs. Capable of scanning any web application irrespective of its underlying technology, VulnSign employs a Chrome-based crawling engine to detect vulnerabilities in various types of applications, including legacy systems, custom-built solutions, modern HTML5 interfaces, Web 2.0 applications, and Single Page Applications (SPA). The service also provides checks for well-known frameworks, ensuring comprehensive coverage. Designed with user-friendliness in mind, VulnSign's vulnerability scanner allows for significant automation in pre-scan configurations, simplifying the process for users. It serves as a complete vulnerability management solution, accommodating multiple users and offering seamless integration with other platforms. To initiate a scan, users simply need to input the URL and any necessary credentials for password-protected sites, making it straightforward to launch the vulnerability scanner and assess security. Additionally, VulnSign's robust capabilities make it an essential tool for organizations looking to enhance their cybersecurity posture.

In today's fast-paced business environment, software development must keep pace with the demands of the market. However, the current AppSec toolbox often suffers from a lack of integration, leading to complexities that can impede the software development life cycle. By employing Contrast, development teams can alleviate these challenges, as it reduces the complications that frequently affect their productivity. Traditional AppSec methods rely on a one-size-fits-all strategy for identifying and addressing vulnerabilities, resulting in inefficiencies and high costs. In contrast, Contrast optimizes the application of the most effective analysis and remediation techniques, significantly enhancing both efficiency and effectiveness. Additionally, disparate AppSec tools can create operational silos, which obstruct the gathering of actionable insights related to the application's attack surface. Contrast addresses this issue by offering centralized observability, essential for risk management and leveraging operational efficiencies, benefiting both security and development teams alike. Furthermore, Contrast Scan, designed specifically for integration within development pipelines, ensures the swift, precise, and cohesive solutions that modern software development demands, ultimately leading to a more agile and responsive approach.

SOOS offers a straightforward solution for securing your software supply chain, allowing you to manage and maintain your Software Bill of Materials (SBOM) alongside those from your suppliers. It provides ongoing monitoring to identify and resolve vulnerabilities and licensing concerns efficiently. With the industry's quickest implementation time, your entire team can leverage Software Composition Analysis (SCA) and Dynamic Application Security Testing (DAST) without any limitations on scans, ensuring robust security practices. This comprehensive approach not only enhances security but also streamlines compliance efforts across your organization.

StackHawk inspects your ongoing applications, services, and APIs for potential security issues that may arise from your development team, along with vulnerabilities in open-source components that could be at risk of exploitation. In the current engineering environment, it has become commonplace to integrate automated testing suites within CI/CD frameworks. Therefore, it begs the question: why shouldn't application security adapt in a similar manner? StackHawk is tailored to uncover vulnerabilities directly within your development workflow. The motto "built for developers" captures the essence of StackHawk, highlighting the need to weave security seamlessly into the development lifecycle. As the landscape of application security progresses to match the fast pace of contemporary engineering teams, it is crucial for developers to have access to tools that facilitate the assessment and resolution of security vulnerabilities. With StackHawk, security measures can evolve alongside development efforts, enabling teams to identify vulnerabilities during pull requests and address them promptly, in contrast to traditional security solutions that often delay action until after manual scans are performed. This tool not only fulfills the requirements of developers but is also supported by the most widely utilized open-source security scanner, making it a preferred choice among users. Ultimately, StackHawk empowers developers to fully integrate security into their routine tasks, fostering a culture of proactive risk management within their projects. Additionally, this allows organizations to enhance their overall security posture while maintaining efficiency in their development processes.

Stay informed about new risks with our real-time, intelligently curated threat intelligence. Identify and prioritize potential hazards up to three months ahead of conventional scanning solutions, which eliminates the necessity for repetitive scans or additional agents. Utilize Attenu8, our AI-powered platform, to concentrate on the most pressing threats. Shield your DevOps pipeline from vulnerabilities in open source, malware, code secrets, and configuration issues. Protect your infrastructure, network, IoT devices, and other assets by modeling them as virtual entities. Effortlessly discover and manage your assets using an intuitive open-source CLI. Decentralize your security measures with immediate notifications. Easily integrate with platforms like MSTeams, Slack, JIRA, ServiceNow, and others through our comprehensive API and SDK. Maintain a competitive advantage by keeping abreast of new malware, vulnerabilities, exploits, patches, and remediation strategies in real-time, all driven by our sophisticated AI and machine-curated threat intelligence. Our solutions empower your organization to achieve robust security across all its digital assets, ensuring a resilient defense against evolving threats. By leveraging these tools, you can better protect your operations and maintain business continuity in an increasingly complex digital landscape.

Bright Security offers a developer-focused Dynamic Application Security Testing (DAST) solution that enables companies to swiftly and cost-effectively deliver secure APIs and applications. Its innovative approach facilitates rapid and iterative scanning, allowing for the early detection of significant security vulnerabilities within the Software Development Life Cycle (SDLC), all while maintaining high standards of quality and delivery speed. By empowering Application Security (AppSec) teams with the governance needed to protect APIs and web applications, Bright also enables developers to take charge of security testing and remediation processes. In contrast to traditional DAST solutions, which were primarily created for AppSec experts and often uncover vulnerabilities late in the development timeline, Bright's solution is simple to implement and spans the entire SDLC, starting from the Unit Testing phase. It continuously learns from each scan, enhancing its effectiveness over time. This proactive approach not only aids organizations in identifying and addressing vulnerabilities at an early stage but also significantly mitigates risk and lowers costs associated with security breaches. Ultimately, Bright Security fosters a collaborative environment where security practices are integrated seamlessly into the development workflow.

Performing runtime code reviews for every change made in both the code editor and continuous integration (CI) setups enables developers to uncover potential issues related to performance, security, and stability prior to deploying the code to production. This forward-thinking strategy promotes collaboration among team members regarding application behavior concerns, eliminating the necessity to duplicate each other's environments. Moreover, by automating the creation of AppMaps within CI, teams can be alerted to performance and security flaws, while also facilitating comparative assessments of observability and notifications across various branches and teams. The integration of AppMap in CI empowers developers to automate their observability efforts, produce OpenAPI documentation, and much more. In addition, the code reviews tied to AppMap link to extensive resources that assist in pinpointing the root causes of any unexpected issues that arise. The incorporation of sequence diagram diffs offers a straightforward visual depiction of behavioral changes in the code, simplifying the process of monitoring adjustments and their effects over time. This blend of tools not only improves code quality but also optimizes the development workflow for teams, fostering an environment where continuous improvement is possible. Ultimately, adopting these practices not only enhances the technical rigor of the codebase but also contributes to a more cohesive and efficient team dynamic.