Best Free Dynamic Application Security Testing (DAST) Software of 2025

Fortify your technology stack with Aikido's comprehensive code-to-cloud security solution. Quickly and automatically identify and remediate vulnerabilities. Aikido’s dynamic application security testing (DAST) tool highlights the areas of your application that are most at risk, allowing you to address security weaknesses before they can be exploited by malicious actors. Keep an eye on your applications and APIs to detect threats such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF) — both in visible areas and through authenticated DAST assessments.

GitLab is a complete DevOps platform. GitLab gives you a complete CI/CD toolchain right out of the box. One interface. One conversation. One permission model. GitLab is a complete DevOps platform, delivered in one application. It fundamentally changes the way Security, Development, and Ops teams collaborate. GitLab reduces development time and costs, reduces application vulnerabilities, and speeds up software delivery. It also increases developer productivity. Source code management allows for collaboration, sharing, and coordination across the entire software development team. To accelerate software delivery, track and merge branches, audit changes, and enable concurrent work. Code can be reviewed, discussed, shared knowledge, and identified defects among distributed teams through asynchronous review. Automate, track, and report code reviews.

Crashtest Security, a SaaS-based security vulnerability scanner, allows agile development teams to ensure continuous security even before reaching Production. Our state-of the-art dynamic application security test (DAST), integrates seamlessly into your development environment and protects multipage and JavaScript applications, as well microservices and APIs. Crashtest Security Suite can be set up in minutes. You will also have advanced crawling options and the ability to automate your security. Crashtest Security can help you keep your code and customers safe by allowing you to see vulnerabilities in the OWASP Top 10.

VulnSign is an online vulnerability scan that is fully automated, configurable by customers and offers advanced features. VulnSign can scan all types of web applications, regardless of their technology. It uses a Chrome-based crawling engine to identify vulnerabilities in legacy, custom-built, modern HTML5, Web 2.0, and Single Page Applications (SPA) applications. It also offers vulnerability checks for popular frameworks. VulnSign's vulnerability scanner is easy to use. Most of the pre-scan configuration can also be automated. It's a complete vulnerability management solution that supports multiple users and integrates well with other systems. To test it, you only need to specify the URL and credentials (to scan password-protected websites) and launch a vulnerability scanner.

Modern software development must be as fast as the business. The modern AppSec toolbox lacks integration, which creates complexity that slows down software development life cycles. Contrast reduces the complexity that hinders today's development teams. Legacy AppSec uses a single-size-fits all approach to vulnerability detection and remediation that is inefficient, costly, and expensive. Contrast automatically applies the most efficient analysis and remediation technique, greatly improving efficiency and effectiveness. Separate AppSec tools can create silos that hinder the collection of actionable intelligence across an application attack surface. Contrast provides centralized observability, which is crucial for managing risks and capitalizing upon operational efficiencies. This is both for security and development teams. Contrast Scan is a pipeline native product that delivers the speed, accuracy and integration required for modern software development.

​SOOS is the easy-to-setup software supply chain security solution. Maintain your SBOM and manage SBOMs from your vendors. Continuously monitor, find, and fix vulnerabilities and license issues. With the fastest time to implementation in the industry, you can empower your entire team with SCA and DAST–no scan limits.​

StackHawk evaluates your active applications, services, and APIs for potential security flaws introduced by your team, as well as for vulnerabilities in open-source components that could be exploited. In today's engineering landscape, automated testing suites integrated within CI/CD processes have become standard practice. So, why should application security not follow suit? StackHawk is designed to identify vulnerabilities right within your development pipeline. The phrase "built for developers" embodies the core philosophy of StackHawk, emphasizing the importance of integrating security into the development process. As application security evolves to keep pace with the rapid tempo of modern engineering teams, developers require tools that enable them to assess and remediate security issues effectively. With StackHawk, security can advance in tandem with development, allowing teams to detect vulnerabilities at the stage of pull requests and implement fixes swiftly, whereas traditional security tools often lag behind, waiting for manual scans to be initiated. This tool not only meets the needs of developers but is also backed by the most widely adopted open-source security scanner available, ensuring it remains a favorite among users. Ultimately, StackHawk empowers developers to embrace security as an integral part of their workflow.

Stay updated on new threats with our real-time, machine-curated threat intelligence. Identify and prioritize potential risks up to three months in advance compared to leading scanning solutions, eliminating the need for redundant scans or agents. Leverage Attenu8, our AI-driven platform, to focus on the most critical threats. Protect your DevOps pipeline from open source vulnerabilities, malware, code secrets, and configuration challenges. Safeguard your infrastructure, network, IoT devices, and other assets by representing them as virtual entities. Effortlessly discover and manage your assets through a straightforward open-source CLI. Decentralize your security functions with immediate alerts. Seamlessly integrate with MSTeams, Slack, JIRA, ServiceNow, and other platforms through our robust API and SDK. Maintain an edge over your adversaries by staying informed about emerging malware, vulnerabilities, exploits, patches, and remediation steps in real-time, powered by our advanced AI and machine-curated threat intelligence. With our solutions, your organization can ensure comprehensive security across all its digital assets.

Bright Security is a developer-centric Dynamic Application Security Testing solution (DAST). This allows organizations to ship secure APIs and applications quickly and economically. Its method allows for quick and iterative scanning to identify critical security flaws early in the SDLC, without compromising quality or delivery speed. Bright empowers AppSec teams with governance to secure APIs and web applications while allowing developers to take control of security testing and remediation. Bright's DAST solution, unlike legacy DAST solutions that were designed for AppSec professionals, is easy to deploy and finds vulnerabilities late in the development process. It can be deployed in the Unit Testing phase, and run through the entire SDLC, learning from each scan and optimizing. Bright helps organizations detect and fix vulnerabilities early in the SDLC. This reduces risk and costs.

Conducting runtime code reviews for each modification in both the code editor and continuous integration (CI) environments allows developers to identify issues related to performance, security, and stability before the code reaches production. This proactive approach facilitates collaboration on application behavior concerns among team members without the need to replicate each other's environments. Furthermore, automating the generation of AppMaps within CI enables teams to receive notifications about performance and security vulnerabilities while allowing for comparative analysis of observability and alerts across different branches and teams. By implementing AppMap in CI, developers can automate their observability processes, generate OpenAPI documentation, and much more. Additionally, the code reviews associated with AppMap connect to comprehensive resources that help identify the underlying causes of any unexpected behaviors. The use of sequence diagram diffs also provides a clear visual representation of behavioral changes in the code, making it easier to track modifications and their impacts over time. This combination of tools not only enhances code quality but also streamlines the development workflow for teams.