Best cloud-based application security testing (AST) tools in 2025

Moving to the cloud promised to accelerate everything, and it delivered. Development teams now ship features faster, scale instantly, and deploy globally with a few clicks. But here’s the catch: vulnerabilities move just as fast. Traditional security testing tools, built for static environments and long release cycles, struggle to keep pace with containers, microservices, and CI/CD pipelines. This is where cloud-based application security testing (AST) tools prove their worth.

Cloud-native AST tools integrate seamlessly into DevSecOps workflows, enabling continuous and automated testing across dynamic environments. They combine the power of DAST, SAST, SCA, and API testing into scalable, on-demand platforms that work at cloud speed.

In this blog, we’ll explore the best cloud-based AST tools in 2025, compare their features, methodologies, and user ratings, and help you choose the right solution for your team’s security needs.

Best cloud-based AST tools comparison chart

Here’s a quick overview of the leading cloud-based AST tools, highlighting their key capabilities, testing methodologies, and G2 ratings.

Best cloud-based AST tools in 2025

1. Beagle Security

Beagle Security is a cloud-native application security testing platform that specializes in automated DAST and API security testing. It helps development teams identify, validate, and remediate vulnerabilities in web and API-based applications before attackers can exploit them. Built for CI/CD environments, Beagle Security integrates directly with pipelines to ensure every deployment is automatically tested.

Key features

• AI-powered vulnerability validation with zero false positives

• REST, SOAP, and GraphQL API security te*sting

• Pre-production and staging environment support

• CI/CD integrations for GitLab, Jenkins, and GitHub Actions

• Continuous scanning with automated reporting

• Compliance-ready reports for OWASP, GDPR, and ISO

G2 rating:

Users rate Beagle Security 4.7 out of 5, praising its ease of setup, accuracy, and automation capabilities.

Pricing:

• Essential plan: $119 per month

• Advanced plan: $359 per month

• Enterprise: Custom pricing available

2. Checkmarx One

Checkmarx One unifies SAST, DAST, SCA, and API security testing within a single cloud-based platform. It is designed for large organizations managing complex, multi-cloud environments that demand consistent visibility and governance across all application layers.

Key features

• Unified cloud AppSec platform with cross-correlation across DAST, SAST, and SCA

• AI-powered prioritization of vulnerabilities

• Multi-cloud and hybrid deployment options

• Pre-configured compliance templates for SOC 2, PCI DSS, and ISO

• Secure coding feedback and developer education tools

• Native integrations with popular CI/CD tools

G2 rating:

Checkmarx One holds a 4.5 out of 5 rating from users who appreciate its scalability and centralized visibility for large enterprise teams.

Pricing: Custom pricing based on organization size and deployment needs

3. GitLab Ultimate Security

GitLab Ultimate Security provides comprehensive cloud-based security scanning natively integrated into the DevOps pipeline. It is designed for organizations that prefer a single platform for both code collaboration and security automation.

Key features

• Built-in SAST, DAST, and dependency scanning within GitLab pipelines

• Merge request-based security approvals and auto-remediation

• Container and Kubernetes image scanning

• Compliance management and policy enforcement

• Supports both cloud and self-managed deployments

• Detailed vulnerability dashboards and metrics

G2 rating:

GitLab Ultimate Security has a 4.5 out of 5 rating from 410 reviews, with users highlighting the convenience of unified DevSecOps workflows.

Pricing: Custom pricing

4. Rapid7 InsightAppSec

Rapid7 InsightAppSec brings powerful cloud-based DAST capabilities with IAST integration, enabling teams to dynamically test modern web applications. Its analytics and visualization features provide actionable insights for security and development teams alike.

Key features

• Cloud-native DAST with real-time analytics

• IAST integration for deeper insight into vulnerabilities

• Robust support for REST and SOAP APIs

• Automation workflows for continuous testing

• Comprehensive vulnerability reporting and dashboards

• Insight platform integration for central visibility

G2 rating:

Rapid7 InsightAppSec is rated 3.9 out of 5 by users who value its accuracy and ease of cloud deployment.

Pricing:

• From $175 per application per month

5. Tenable

Tenable extends its well-known vulnerability management capabilities into cloud-based application testing. Integrated with Tenable.io, it offers risk-based prioritization that helps organizations focus on high-impact vulnerabilities across cloud assets.

Key features

• Web application scanning integrated with Tenable.io

• Risk-based prioritization using Tenable VPR

• Support for containerized and cloud-native environments

• Dashboards correlating vulnerabilities with risk exposure

• Centralized reporting and compliance visibility

G2 rating:

Tenable is rated 4.5 out of 5 by users who appreciate its unified visibility across infrastructure and applications.

Pricing:

• Annual plans start at $7,434 for five FQDNs

6. Qualys

Qualys offers an enterprise-grade, cloud-native platform for DAST and SCA, combining web application scanning with vulnerability management and compliance automation. It is best suited for large organizations managing thousands of assets across multiple clouds.

Key features

• Scalable web application scanning for global deployments

• Built-in integration with VMDR and Policy Compliance modules

• Continuous discovery of internet-facing assets

• Support for hybrid and multi-cloud infrastructures

• Automated compliance reporting and alerts

G2 rating:

Qualys has a 4.5 out of 5 rating from users who appreciate its stability and integration depth with broader vulnerability management features.

Pricing: Custom quote-based pricing

7. ZAP (Checkmarx ZAP)

ZAP, now under Checkmarx, remains one of the most popular open-source DAST tools with extensive cloud deployment options. It allows flexible customization, integration into CI/CD pipelines, and automation for large-scale testing environments.

Key features

• Dynamic web application scanning with customizable scripts

• API scanning for REST and SOAP endpoints

• Integration with cloud CI/CD platforms like GitHub Actions and GitLab CI

• Headless scanning and automation modes for DevSecOps workflows

• Strong community support and plugin ecosystem

G2 rating:

Checkmarx ZAP holds a 4.7 out of 5 rating from users, often praised for flexibility, value, and ease of cloud integration.

Pricing:

• Free community version

• Commercial support available through Checkmarx

8. Burp Suite

Burp Suite remains the preferred choice for manual and automated penetration testing. Its enterprise and cloud editions extend dynamic scanning capabilities for teams needing advanced control and customization.

Key features

• Web and API testing with deep crawling capabilities

• Enterprise edition for automated DAST at scale

• BApp Store with hundreds of extensions

• Integration with Jenkins and CI/CD pipelines

• Detailed vulnerability reports with proof-of-exploit evidence

G2 rating:

Burp Suite scores 4.8 out of 5 based on reviews, with users praising its powerful proxy and testing depth.

Pricing:

• Professional: $475 per year

• Enterprise: Custom pricing for large-scale automation

9. Mend.io

Mend.io, formerly known as WhiteSource, focuses on open-source component analysis and supply chain security. Its cloud-based SCA platform integrates seamlessly into CI/CD workflows for automated dependency management.

Key features

• Continuous monitoring of open-source vulnerabilities

• Policy-driven license compliance management

• Integration with popular cloud CI/CD systems

• Container image scanning and remediation guidance

• Vulnerability prioritization based on exploitability data

G2 rating:

Mend.io has a 4.3 out of 5 rating from reviews, with users citing its depth in dependency analysis and compliance enforcement.

Pricing: Custom pricing based on organization size and integration scope

10. Contrast Security

Contrast Security provides real-time application protection using interactive application security testing (IAST) and runtime application self-protection (RASP). It is built for cloud-native environments where applications need continuous runtime monitoring.

Key features

• Runtime vulnerability detection and protection

• IAST integrated directly into applications

• Real-time feedback for developers during runtime

• Supports containerized and serverless workloads

• Centralized dashboard for visibility across clouds

G2 rating:

Contrast Security holds a 4.5 out of 5 rating from reviews, with users appreciating its runtime insights and minimal false positives.

Pricing: Custom pricing based on application volume and deployment scale

Conclusion

Cloud-based application security testing tools have become essential in 2025 for organizations looking to secure modern, fast-evolving environments. Each tool brings unique strengths to the table depending on team structure, deployment models, and testing maturity.

For organizations seeking unified AST platforms with end-to-end coverage, Checkmarx One, GitLab Ultimate Security, Rapid7, Tenable, and Qualys provide enterprise-grade scalability and governance. Teams prioritizing flexibility and specialization will find Beagle Security ideal for API security and automated DAST, ZAP for open-source automation, and Mend.io for supply chain risk management. For runtime protection and IAST, Contrast Security offers deep visibility and proactive defense.

However, if you’re looking for a cloud-based AST solution that combines automated security testing, AI-powered validation, seamless CI/CD integrations, and developer-friendly workflows, Beagle Security stands out as the best-balanced choice.

In short:

• For unified enterprise AST, Checkmarx One and GitLab Ultimate Security excel.

• For specialized API and DAST automation, Beagle Security leads the pack.

• For open-source and budget-conscious teams, Checkmarx ZAP and Burp Suite are solid picks.

• For runtime protection and IAST, Contrast Security is highly effective.

Written by

Febna V M

Cyber Security Engineer

Contributor

Aaron Thomas

Product Marketing Specialist