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

Secure your stack with Aikido's code-to-cloud security platform. Find and fix vulnerabilities fast & automatically. Aikido’s DAST scanner shows where your app is most vulnerable so you can close security gaps before attackers find them. Monitor your App & APIs to find vulnerabilities like SQL injection, XSS, and CSRF — both on the surface and via authenticated DAST.

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.

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.

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.​

Keep up-to-date with emerging threats by using machine-curated threat intelligence. Prioritize threats up to three months earlier than other leading scanning solutions, without the need for redundant scanning or agents. Attenu8, our AI platform, can help you prioritize your threats. Protect your DevOps pipeline from open source vulnerabilities, malware and code secrets. By modeling your assets as virtual assets, you can secure your network, IOT devices, and infrastructure. A simple, open-source CLI allows you to easily discover and manage your assets. Real-time alerts allow you to decentralize security functions. Our API and SDK allow you to integrate with MSTeams and other ecosystems such as JIRA, ServiceNow, Slack, JIRA and JIRA. Keep ahead of your adversaries. Our AI-powered, machine-curated threat intelligence keeps you up to date on new malware, vulnerabilities exploits, patches, and remediations.

StackHawk checks your services, APIs, and applications for security vulnerabilities. It also looks for exploitable open-source security bugs. Today's engineering teams rely on automated test suites in CI/CD. Why should application security be any other? StackHawk was designed to find vulnerabilities in your pipeline. Built for developers is more that a slogan. It is the ethos behind StackHawk. Application security has changed left. Developers need a tool to review and fix security issues. StackHawk allows application security to keep up with today's engineering teams. You can quickly find vulnerabilities in pull requests and push out fixes while the security tools of yesterday are still waiting for you to run a manual scan. Developers love this security tool, powered by the most widely used open-source security scanner.

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.

Runtime code review for every code change both in the code editor as well as in CI. Catch performance, stability, and security issues at runtime while you code. This will prevent them from reaching production. Collaboration on an application behavior issue without having to duplicate the environment of a teammate. Automate AppMap creation in CI. Get alerts for performance and safety flaws. Compare observability and alarms across branches and team. AppMap can be used in CI to automate observability and create OpenAPI docs. AppMap code reviews provide links to rich resources to help you uncover the root cause of unexpected behavior. Sequence diagrams diffs are a great way to see behavioral changes in your code.