Checkmarx vs Tenable Nessus Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

Checkmarx

0.0 (0 reviews)

Checkmarx provides a comprehensive cloud-native application security platform that helps you find and fix vulnerabilities throughout your entire software development lifecycle from code to cloud.

Starting at --
Free Trial 14 days
VS

Tenable Nessus

0.0 (0 reviews)

Nessus is a vulnerability assessment solution providing deep-point-in-time scans to identify security flaws, misconfigurations, and malware across your modern IT infrastructure, including cloud, containers, and traditional assets.

Starting at Free
Free Trial 7 days

Quick Comparison

Feature Checkmarx Tenable Nessus
Website checkmarx.com tenable.com
Pricing Model Custom Freemium
Starting Price Custom Pricing Free
FREE Trial ✓ 14 days free trial ✓ 7 days free trial
Free Plan ✘ No free plan ✓ Has free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment saas on-premise saas on-premise desktop
Integrations GitHub GitLab Jenkins Azure DevOps Jira Slack AWS Docker Kubernetes Visual Studio ServiceNow Splunk AWS Microsoft Azure Google Cloud Platform Jira Slack IBM QRadar
Target Users mid-market enterprise small-business mid-market enterprise
Target Industries
Customer Count 0 0
Founded Year 2006 2002
Headquarters Ramat Gan, Israel Columbia, USA

Overview

C

Checkmarx

Checkmarx helps you secure your applications by integrating automated scanning directly into your development workflow. Instead of waiting until production to find risks, you can identify vulnerabilities in your source code, open-source dependencies, and infrastructure-as-code files while you write them. This proactive approach ensures your team builds secure software without slowing down your release cycles.

You can manage your entire security posture from a single dashboard that correlates risks across different scanning methods. Whether you are a developer looking for real-time feedback in your IDE or a security professional managing compliance across thousands of repositories, the platform provides the visibility you need. It scales to support global enterprises, helping you bridge the gap between development speed and robust security requirements.

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Tenable Nessus

Nessus helps you identify and fix security vulnerabilities before attackers can exploit them. You can scan your entire environment—including cloud instances, web applications, and traditional network hardware—to find missing patches, software flaws, and configuration errors. It provides a clear view of your attack surface so you can prioritize the most critical risks to your business.

You can choose between different versions depending on your needs, ranging from a free version for educators and students to professional and expert versions for security consultants. It simplifies the complex task of vulnerability assessment with pre-built templates and automated reporting. Whether you are securing a small office or a complex hybrid-cloud environment, you can rely on its extensive plugin library to stay protected against the latest threats.

Overview

C

Checkmarx Features

  • Static Analysis (SAST) Scan your proprietary source code for security flaws and receive actionable remediation guidance directly within your preferred development environment.
  • Open Source Security Identify and manage risks in third-party libraries and open-source components to prevent supply chain attacks before they happen.
  • Infrastructure as Code Secure your cloud configurations and deployment scripts by catching misconfigurations in Terraform, Helm, and Kubernetes files early.
  • API Security Automatically discover and inventory your application APIs to identify shadow endpoints and protect sensitive data transitions.
  • Supply Chain Security Detect malicious packages and suspicious contributor behavior in your ecosystem to ensure your software remains untampered.
  • Developer Education Access bite-sized security training lessons triggered by the specific vulnerabilities you encounter while writing code to improve your skills.
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Tenable Nessus Features

  • Pre-Built Scan Templates. Start scanning immediately using over 450 pre-configured templates for common audits like PCI-DSS and HIPAA compliance.
  • Live Results. Perform offline vulnerability analysis against your scan history to find new threats without running a new scan.
  • Cloud Infrastructure Scanning. Assess your cloud-native assets and identify misconfigurations in AWS, Azure, and Google Cloud environments easily.
  • Customizable Reporting. Create tailored reports in multiple formats like HTML or PDF to share critical security findings with your stakeholders.
  • Web Application Scanning. Identify vulnerabilities in your web applications and APIs to prevent common attacks like SQL injection and cross-site scripting.
  • External Surface Discovery. Find and map your internet-facing assets to understand what an attacker sees when looking at your organization.

Pricing Comparison

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Checkmarx Pricing

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Tenable Nessus Pricing

Nessus Essentials
$0
  • Scan up to 16 IP addresses
  • High-speed accurate scanning
  • Community support access
  • Standard vulnerability assessment
  • Free for educators and students

Pros & Cons

M

Checkmarx

Pros

  • Deep integration with popular CI/CD pipelines and IDEs
  • Comprehensive language support for diverse application stacks
  • Accurate correlation of risks across multiple scanning engines
  • Detailed remediation instructions help developers fix bugs faster

Cons

  • Initial configuration requires significant time and expertise
  • Scanning large codebases can impact build performance
  • User interface feels complex for non-security experts
A

Tenable Nessus

Pros

  • Extremely high accuracy with very low false-positive rates
  • Massive library of plugins updated daily for new threats
  • Easy to set up and run your first scan quickly
  • Detailed remediation instructions help you fix issues faster

Cons

  • Annual subscription cost is high for small businesses
  • Interface can feel dated compared to newer cloud platforms
  • Reporting customization requires a learning curve to master
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