Technical Review by
Laura Iannini
Security testing tools identify vulnerabilities in applications and infrastructure before attackers can exploit them — spanning static analysis, dynamic testing, and penetration testing across the development and production lifecycle. The value of any testing tool comes down to detection accuracy and how well findings integrate into development workflows. We reviewed 10 platforms and found Aikido Security, SonarQube, and Astra Security Pentest to be the strongest options for most security programs.
Application security testing covers a broad spectrum of tools with genuinely different purposes. Static analysis catches vulnerabilities in code before it ships. Dynamic testing probes running applications from the outside. Interactive testing instruments the application from within. Penetration testing frameworks simulate what an attacker actually does once they’re inside. Choosing the wrong category for your problem doesn’t just leave gaps — it gives your team false confidence that the surface is covered when it isn’t.
The market has also split on delivery model. Platforms like Aikido and Invicti aim for consolidation, pulling multiple testing methods into a single workflow. Specialist tools like Burp Suite and Metasploit go deep in a single discipline, trading breadth for the granular control that professional testers need. Open source options like ZAP and Metasploit remove licensing cost entirely, with trade-offs in automation depth and vendor support. Most mature AppSec programs end up running more than one.
We evaluated application security testing tools across detection accuracy, integration depth with CI/CD pipelines and developer workflows, false positive rates, and the operational overhead of running each tool after initial setup. We also reviewed customer experiences across deployed implementations to identify where vendor claims diverge from what security teams encounter in practice.
This guide gives you the criteria and decision logic to match the right application security testing tools to your environment, your team’s technical maturity, and the specific attack surface you need to cover.
Aikido Security is a complete code, cloud, and runtime security testing platform. Aikido’s advantage is that it consolidates multiple cloud security testing solutions into one platform, including cloud security posture management, application security posture management, infrastructure-as-code, SAST, DAST, software composition analysis, and more.
Aikido’s DAST engines monitor your apps and APIs to identify vulnerabilities like SQL injection, XSS, and CSRF. It flags OWASP top 10 risks, automatically discovers APIs, including REST and GraphQL endpoints, and continuously scans your web applications and self-hosted apps.
Aikido also supports authenticated DAST, so you can test if logged-in users can break applications or access sensitive data they shouldn’t be able to reach. Aikido’s scanner can log in as a real user, without requiring any editable access to your code.
Any exposures, vulnerabilities, and misconfigurations are ranked by severity, with critical issues pushed for faster fixing. Each vulnerability is ranked out of 100, and assigned a clear TL;DR, summary, and set of recommendations to fix the issue quickly. Aikido DAST runs daily, and you can choose where alerts are sent.
Pricing for Aikido starts with a free plan, which can be used by up to two developers. Enterprise pricing starts at $350 USD per month, which can be used by up to 10 users. Overall, Aikido is well-suited to teams and organizations needing an all-in-one code-to-cloud runtime security testing tool with a strong DAST component to protect apps and APIs.
SonarQube is a security testing solution that detects and remediates vulnerabilities throughout the software development lifecycle. Its integrated platform delivers Static Application Security Testing (SAST), secrets detection, and software composition analysis to help you make sure all of your code is secure before it goes into production. Sonar is a popular security testing provider, used by 7 million+ developers and 400,000+ teams.
SonarQube provides advanced SAST, a dependency-aware SAST, that helps identify deeper and more complex vulnerabilities due to the interaction of your application code with third-party (open-source) code. Key features include secrets detection, taint analysis, IaC scanning, AI Code Assurance, and AI CodeFix, which enables one-click remediation of issues plus the ability to flag, analyze, and assure all AI-generated code meets your quality standards. Sonar deploys directly into your IDE via SonarQube for IDE. CI/CD integrations with GitHub, GitLab, Bitbucket, and Azure DevOps enforce quality gates before deployment.
Sonar also provides compliance reports for key frameworks such as OWASP Top 10, NIST SSDF, and CWE among others.
SonarQube is very easy to use, and integrates directly into your IDEs and CI/CD pipelines. It catches risks and suggests fixes in real time with AI-powered remediation. It can also check both human-written and AI-generated code. SonarQube is ideal for enterprises seeking to integrate continuous security testing into their DevSecOps workflows. There is both an on-premises and cloud-based option, as well as support for open-source developers. For SonarQube Cloud, a free plan is available for up to five users, with a Team plan at $32 per month. SonarQube Server Developer edition starts at $720 annually.
Astra combines automated DAST scanning with managed manual penetration testing on the same platform, targeting web apps, APIs, PWAs, and SPAs. We think it sits in a useful middle ground: more structured than a pure scanner, lighter than a full red team engagement, and well-suited for teams preparing for compliance certification.
Astra’s scanner runs over 9,300 checks covering OWASP Top 10, SANS 25, and known CVEs, with over 10,000 authenticated attack cases for API testing specifically. Authenticated scanning works via a browser extension that records login flows, which is practical for teams worried about vulnerabilities hidden behind login screens. Compliance reporting maps findings to ISO 27001, HIPAA, SOC 2, GDPR, and PCI DSS inside a built-in Resolution Center, and the Pentest Plan includes a publicly verifiable security certificate that auditors and partners can check independently.
Customers say the dashboard makes triage straightforward, and the collaborative remediation approach stands out. The support team earns specific praise for helping harden infrastructure broadly, not just chasing individual ticket closures. According to customer feedback, retest scope gets unclear when distinguishing a reopened finding from a new surface, and remediation guidance is text-based only with no visual walkthroughs.
We think Astra is a good fit for teams that want a structured pentest process with ongoing support, not just a report to file. If you need external validation with clear findings ahead of a compliance audit, the combination of automated scanning, manual testing, and built-in compliance checks reduces the tooling overhead of audit preparation. Manual retest runs are limited, so scope your engagements carefully before kickoff.
Cobalt Strike is an adversary simulation platform built for red team operations and advanced penetration testing. It replicates the long-dwell, stealthy behaviors of sophisticated threat actors inside enterprise networks, and we think it remains the standard framework for organizations running structured APT emulation programs.
The Beacon payload is the core capability. It acts as a post-exploitation agent designed to maintain persistent access while evading detection, using asynchronous “low and slow” communication and a malleable command and control language. The shared team server model supports multi-operator red team engagements where several testers need to coordinate and document post-exploitation activity in real time. The Community Kit and custom scripting API let teams tailor capabilities and keep simulations current as threat actor techniques evolve. Version 4.12 added a refreshed GUI, a REST API, user-defined C2 channels, and new process injection options.
Beacon functionality earns consistent praise from red teamers, and the built-in modules cover a full range of post-exploitation scenarios across the attack lifecycle. Some users report that pricing is a significant consideration, particularly for non-US teams. The cost reflects enterprise positioning but places Cobalt Strike out of reach for smaller security teams or those on restricted budgets.
We think Cobalt Strike is the right call for mature red teams running structured adversary simulation programs against enterprise environments. If your organization needs credible APT emulation with collaborative multi-operator support, this is built for that purpose. For teams earlier in their red team program, the cost and operational complexity are harder to justify. The capability is substantial; the question is whether your program is ready to fully use it.
Invicti is an enterprise DAST and IAST platform for continuous web application and API security testing. Born from the Netsparker scanner, the platform scales from single-site scans to enterprise-wide security programs covering thousands of web assets.
Invicti’s Proof-Based Scanning safely exploits each potential vulnerability to confirm the issue is real, producing a proof artifact that eliminates false positive triage. The Invicti Shark IAST agent provides internal code-level visibility when combined with external DAST scanning. Automated asset discovery continuously identifies shadow and forgotten web applications across the environment. The platform assigns findings directly to developers with exact locations and fix guidance, and flags outdated deployed technologies between scans.
We think Invicti suits enterprise security teams that need accurate, continuous DAST coverage across a large web application portfolio. The proof-based approach eliminates false positive investigation time, and combined DAST and IAST catches issues external-only scanning misses. Invicti covers all web apps, APIs, and services regardless of stack.
Burp Suite is the standard tool for manual and semi-automated web application penetration testing. We think it’s near-mandatory for any team running professional web app security testing. It’s built for security testers who need granular control over HTTP traffic, not teams looking for an automated scanner to run in the background.
The intercepting proxy sits between your browser and the target, letting you inspect, modify, and replay requests in real time. Repeater handles manual payload testing while Intruder automates parameter fuzzing, and together they’re particularly effective for mapping application logic flaws. Burp Suite Professional adds JavaScript-heavy app and API scanning, out-of-band application security testing (OAST) for vulnerabilities that produce no visible response, and WAF-aware false positive filtering. The BApp extension library and custom extension API let teams build capabilities specific to their testing workflows.
Customers describe Burp Suite as their daily driver for web app, API, and mobile dynamic testing. The extension ecosystem earns consistent praise for expanding core capabilities beyond what ships out of the box. Some users report that the jump from free Community Edition to Professional is steep, particularly for individual researchers. Per-user licensing adds up fast for larger teams, and the interface can feel cluttered across multiple tabs with a real learning curve for new users.
We think any team running manual web application security testing needs Burp Suite in their toolkit. If your organization has professional pentesters or runs a bug bounty program, the Professional license pays for itself quickly. For teams expecting automated coverage out of the box, set expectations accordingly. Burp rewards experience and grows with your team over time.
Probely is a cloud-based DAST platform for DevSecOps teams running automated web application and API security testing inside CI/CD pipelines. It was acquired by Snyk in November 2024 and is now also available as Snyk DAST, though the Probely brand continues to operate. We think the API scanning depth and zero false positive approach make it a strong option for teams with significant API surface area.
Probely’s scanner replicates human browsing behavior, clicking through pages, filling forms, and following JavaScript-driven interactions. API coverage is particularly broad: it handles RESTful APIs, follows XHR requests in SPAs, and accepts OpenAPI/Swagger schemas or Postman Collections for standalone API scanning, with 115 vulnerability types specific to APIs. Authenticated scanning supports SSO and OpenID Connect, and compliance reporting covers PCI-DSS, SOC 2, HIPAA, ISO 27001, and GDPR. Agent-based scanning enables testing of internal applications behind firewalls without opening inbound ports.
Customers say Probely integrates cleanly into CI/CD pipelines and connects well with Jira and Slack. Scanning accuracy is consistently highlighted, and implementation earns positive marks from technically proficient teams. Based on customer reviews, pricing draws the most criticism regardless of organization size. Customers also flag that concurrent scanning is limited to a single scan at a time, creating bottlenecks in larger environments.
We think Probely is a solid fit for DevSecOps teams running modern app stacks with significant API surface area. If your pipeline needs accurate, automated security testing with broad compliance reporting, the platform delivers. Validate the single concurrent scan limitation against your scanning volume before committing. For teams with focused application estates and API-heavy workflows, it earns its place in the pipeline.
Metasploit is the most widely adopted open-source penetration testing framework in the industry. We think it remains a foundational tool for any team running structured pentest programs that need a proven, well-documented framework with broad exploit coverage and the ability to demonstrate real-world vulnerability impact to business stakeholders.
Metasploit’s core strength is its exploit database, with over 2,074 exploits organized across platforms including Windows, Linux, macOS, Android, and Cisco. Teams can customize payloads across multiple formats and tailor them to specific engagement requirements. Metasploit Pro adds Quick Start Wizards, social engineering campaign management, web application testing, and anti-virus evasion with dynamic payloads. For organizations running Rapid7’s InsightVM, the integration connects vulnerability scanning directly to exploitation validation, tightening the loop between discovery and proof of impact.
Customers describe Metasploit as a full toolkit for penetration testing rather than a dedicated scanner. The interface earns specific praise for live demonstration scenarios where showing a non-technical audience an exploit executing in real time carries more weight than a written report. Some users report that installation is complex and the learning curve for beginners is steep. Some offensive security professionals prefer custom tooling, viewing Metasploit as better suited to structured engagements than advanced bespoke red team work.
We think Metasploit suits security teams that need to validate vulnerabilities through actual exploitation and demonstrate impact to leadership. The workflow from exploitation to live demonstration is hard to match. For advanced red team operators who rely on custom tooling, Metasploit may feel constraining. For everyone else running formal pentest programs, it’s a foundational capability that earns its place in the toolkit.
Nessus is a vulnerability scanner built for broad attack surface coverage across endpoints, servers, web applications, cloud infrastructure, and internet-connected assets. We think it’s the right choice for mature security programs scanning large, diverse asset inventories where compliance reporting and structured vulnerability tracking sit alongside scanning in the same workflow.
Nessus uses dynamically compiled plugins to speed up scan performance and reduce time to initial results. The plugin library covers nearly 300,000 plugins with 113,000+ CVEs and a 0.32% false positive rate. Over 450 pre-configured templates cover a wide range of use cases out of the box. The Live Results feature is practical: it assesses vulnerabilities offline with every plugin update without requiring a full rescan. Nessus groups similar issues automatically for prioritization, and the snooze feature sets aside lower-priority findings for defined periods to keep dashboards focused.
Customers say Nessus handles large-scale asset scanning quickly and accurately across mixed environments. The remediation tracking capability earns specific mention, particularly the ability to create remediation projects and assign vulnerability ownership to teams. Some customer reviews note that support quality is inconsistent, with responsiveness gaps flagged by multiple users. Dashboard customization carries a meaningful learning curve, and policy changes and predefined compliance values have limited configuration flexibility.
We were impressed by the speed and accuracy Nessus delivers at scale. If your team manages endpoints and infrastructure across a large, mixed environment and needs compliance reporting alongside structured vulnerability tracking, Nessus is well worth considering. Build in time to learn the dashboard configuration. Once your team is comfortable, the workflow from scan to remediation assignment runs efficiently.
ZAP is a free, open-source web application security scanner that sits in the Checkmarx portfolio following its move from OWASP to the Linux Foundation in 2023 and the core team joining Checkmarx in 2024. We think it’s the right starting point for teams building an AppSec program on a budget, and it delivers real capability at zero cost.
ZAP operates as a man-in-the-middle proxy, intercepting and manipulating HTTP and HTTPS traffic during testing. Active and passive scanning modes address different needs: passive scanning observes traffic without sending attack payloads, while active scanning probes for vulnerabilities directly. The AJAX spider and fuzzing capabilities extend automated coverage to modern JavaScript-heavy apps. Scan policy configuration lets teams run different scenarios against different targets, and an extension marketplace adds capabilities without switching tools. Scripts can customize behavior and reduce false positive rates.
Customers consistently highlight zero cost as a major differentiator, alongside easy installation and cross-platform support. The AJAX spider earns strong feedback from users building security testing into development workflows. Some users report that false positives are the main operational friction, requiring manual verification and extra configuration to reduce noise. Customers also note that ZAP lacks a built-in browser, which is available in commercial alternatives, and that automated feature depth trails newer paid tools.
We think any team that needs capable web application security testing without commercial tooling costs should start with ZAP. It’s a strong foundation for pipeline scanning and manual testing alike. For enterprise programs that need advanced automation, fewer false positives, and dedicated vendor support, the open-source model has real trade-offs. But for teams building from scratch, ZAP delivers serious capability without a licensing conversation.
Your application security testing decision depends on what you’re trying to cover, who’s doing the testing, and where in the development lifecycle you need findings to surface.
For teams building DevSecOps programs from scratch, SonarQube handles static analysis and CI/CD gate enforcement, while ZAP adds dynamic scanning at zero additional cost. That combination covers the fundamentals before you commit to paid tooling. As your program matures, Aikido’s consolidated platform reduces tool sprawl for SMB and mid-market teams that need code-to-cloud visibility without managing multiple products.
For dynamic testing at enterprise scale, Invicti’s combined DAST and IAST approach with Proof-Based Scanning reduces the false positive triage that slows developer teams down. Probely suits API-heavy modern app stacks where accurate automated scanning inside the pipeline matters more than broad feature depth.
Professional penetration testers need Burp Suite. That’s the short version. Teams running structured pentest programs that need a documented, repeatable framework should evaluate Metasploit alongside it. For organizations running adversary simulation programs against enterprise environments, Cobalt Strike is built for that purpose, provided your red team has the experience to use it effectively.
For teams preparing for compliance certification, Astra’s combination of automated scanning, manual testing, and built-in compliance checks for ISO 27001, HIPAA, SOC2, and GDPR reduces the tooling overhead of audit preparation. Nessus suits mature vulnerability management programs scanning large, mixed-asset inventories where remediation tracking and compliance reporting sit alongside scanning in the same workflow.
The wrong choice leaves coverage gaps your team doesn’t know exist. The right combination catches vulnerabilities early, integrates into the workflows developers already use, and gives your security program evidence of effectiveness when regulators or leadership ask for it.
Security testing tools support the identification of vulnerabilities and make it easier to accurately assess weak points and evaluate the overall security posture of software applications, systems, or networks. These tools are highly useful for maintaining strong cybersecurity and are used by security professionals, and developers to identify and address possible security risks proactively.
It is important to be aware that security testing is not a one-size-fits-all kind of process, and the effectiveness of any security testing tool you consider implementing will vary considerable depending on a number of factors. These include what type of systems are being tested, which testing methodology is being used, and the level of skill and expertise of the security professionals that are carrying out the assessment. In addition, while security testing tools are highly useful and play an important role in maintaining strong security, a truly through assessment would also benefit from the insight of skill security experts who perform manual penetration testing.
Security testing tools essentially work in two ways. Firstly, they scan, identify, and report potential security vulnerabilities. Secondly, they provide recommendations and solutions to fix these weaknesses and improve your overall security posture. Security testing tools provide both automated and manual testing processes to facilitate vulnerability remediation.
The use of security testing tools provides a variety of benefits to organizations, which including;
Essentially, these tools are worth utilizing to build a resilient cybersecurity strategy and to face constantly evolving cyber threats head on.
Security testing tools many vary significantly between vendors, but some particularly useful capabilities you may want to look out for include the following:
Mirren McDade is a senior writer and journalist at Expert Insights, spending each day researching, writing, editing and publishing content, covering a variety of topics and solutions, and interviewing industry experts.
She is an experienced copywriter with a background in a range of industries, including cloud business technologies, cloud security, information security and cyber security, and has conducted interviews with several industry experts.
Mirren holds a First Class Honors degree in English from Edinburgh Napier University.
Laura Iannini is a Cybersecurity Analyst at Expert Insights. With deep cybersecurity knowledge and strong research skills, she leads Expert Insights’ product testing team, conducting thorough tests of product features and in-depth industry analysis to ensure that Expert Insights’ product reviews are definitive and insightful.
Laura also carries out wider analysis of vendor landscapes and industry trends to inform Expert Insights’ enterprise cybersecurity buyers’ guides, covering topics such as security awareness training, cloud backup and recovery, email security, and network monitoring. Prior to working at Expert Insights, Laura worked as a Senior Information Security Engineer at Constant Edge, where she tested cybersecurity solutions, carried out product demos, and provided high-quality ongoing technical support.
Laura holds a Bachelor’s degree in Cybersecurity from the University of West Florida.