Code Security Scanning Tools and Vulnerability Scanners for Businesses (2026)

Code security scanning tools automatically check source code, open-source dependencies, secrets and configuration files for vulnerabilities before software ships. Vulnerability scanners check what is already running: networks, servers and web apps. This guide explains both categories and gives neutral facts on widely used options, so you can shortlist tools that fit your stack.

What Are Code Security Scanning Tools?

They are tools that analyze software during development to find security flaws early, when fixes are cheapest. Most plug into code editors, repositories and CI/CD pipelines, flagging issues in pull requests so developers fix them before release.

Code Scanners vs Vulnerability Scanners

Code scanners look inside the software you build. Vulnerability scanners probe systems from the network side for missing patches, misconfigurations and exposed services. Our guide to network vulnerability scanning explains how that side works.

Types: SAST, SCA, Secrets and IaC Scanning

• SAST (static application security testing): analyzes your own source code for flaws such as injection
• SCA (software composition analysis): lists open-source dependencies and flags known vulnerable versions and license issues
• Secrets scanning: finds API keys, passwords and tokens committed to code
• IaC scanning: checks infrastructure-as-code files, such as Terraform and Kubernetes manifests, for insecure settings

Code Security Scanning Tools at a Glance

Tool	Main type	Deployment	License model
Snyk	SAST, SCA, container, IaC	Cloud, IDE and CLI	Commercial with free tier
SonarQube	SAST and code quality	Self-managed or cloud	Free community build and commercial editions
Semgrep	SAST, SCA, secrets	CLI, CI and cloud platform	Open-source CE and commercial platform
GitHub Code Security (CodeQL)	SAST, SCA, secrets	Built into GitHub	Commercial; free on public repositories
Checkmarx One	SAST, SCA, DAST, API, IaC	Cloud or self-managed	Commercial
Veracode	SAST, DAST, SCA	Cloud	Commercial
Black Duck (Coverity, Black Duck SCA)	SAST and SCA	Cloud or self-managed	Commercial
Tenable Nessus	Network vulnerability scanning	Self-managed or cloud	Commercial with limited free edition
Qualys VMDR	Vulnerability management	Cloud	Commercial
Rapid7 InsightVM	Vulnerability management	Cloud with on-premises scanners	Commercial
OpenVAS (Greenbone)	Network vulnerability scanning	Self-managed	Open source
ZAP, Burp Suite, Invicti	Web app DAST	Desktop, CI or cloud	Open source (ZAP), free and commercial editions (Burp), commercial (Invicti)

Order does not indicate ranking.

Commercial Code Scanners (SAST and SCA)

Snyk Code

Snyk’s platform covers SAST (Snyk Code), open-source dependencies, containers and IaC. It focuses on developer workflow, with IDE plugins, repository integration and fix suggestions.

SonarQube

SonarQube from Sonar combines code quality and security analysis. It is available as SonarQube Server for self-hosting and SonarQube Cloud, with a free community build for smaller teams.

Semgrep

Semgrep uses rules written to look like the code they match, which makes custom rules easier to write. Semgrep Community Edition is open source; the commercial platform adds cross-file analysis, dependency and secrets scanning, and central management.

GitHub Code Security (CodeQL)

GitHub’s code scanning uses the CodeQL engine, which treats code as data that can be queried. Since April 2025, GitHub sells its security features as two products, GitHub Code Security and GitHub Secret Protection, available to Team and Enterprise plans. Code scanning is free for public repositories.

Checkmarx One

Checkmarx One is a platform combining SAST, SCA, DAST, API security and IaC scanning. In 2024, the core team behind the open-source ZAP scanner joined Checkmarx.

Veracode

Veracode offers cloud-based SAST, DAST and SCA, and is known for analyzing compiled applications as well as source code.

Black Duck (Coverity and SCA)

Black Duck became an independent company in 2024, after Synopsys sold its software integrity business. It includes the Coverity static analysis engine and Black Duck SCA for open-source risk and licensing.

Free and Open Source Code Scanners

• Semgrep Community Edition: multi-language static analysis with community rules
• Bandit: a Python-specific security linter maintained by the Python Code Quality Authority
• Gitleaks: scans repositories and commit history for secrets
• Trivy: an Aqua Security open-source scanner for vulnerabilities, misconfigurations and secrets in containers, file systems, repositories and IaC
• OWASP Dependency-Check: identifies known vulnerable dependencies

These tools are a strong start for small teams but need setup, tuning and someone to review results.

Vulnerability Scanners for Networks and Web Apps

Tenable Nessus

Nessus is a long-established network vulnerability scanner with a large library of checks for operating systems, applications and devices. Tenable also offers broader exposure management platforms.

Qualys VMDR

Qualys VMDR is a cloud-based platform for asset discovery, vulnerability scanning, prioritization and patch tracking, using cloud agents and network scanners.

Rapid7 InsightVM

InsightVM provides vulnerability scanning and risk-based prioritization, with cloud analytics and on-premises scan engines or agents.

OpenVAS (Greenbone)

OpenVAS is the open-source scanner at the heart of Greenbone’s products, popular with teams that want a self-hosted, no-license-cost option.

ZAP, Burp Suite and Invicti (Web App Scanners)

ZAP is an open-source dynamic web app scanner, formerly an OWASP project, now supported by Checkmarx. Burp Suite from PortSwigger is widely used for manual and automated web testing, with free and paid editions. Invicti, formerly Netsparker, is a commercial DAST platform.

Intruder

Intruder is a UK-based cloud vulnerability scanning service aimed at smaller teams that want external and internal scanning without running their own scanner infrastructure.

How We Selected These Tools

We included tools that are widely referenced in public documentation, standards discussions and practitioner communities, that cover at least one of the categories above, and that serve US or UK businesses. We did not rate, rank or test the products and do not list prices, which change often. Check each vendor’s current documentation and run a trial on your own code.

How to Choose Code Security Scanning Tools

Language and Framework Coverage

Confirm support for every language, framework and package manager you use, including infrastructure code.

Accuracy and False Positives

Run a trial on a real repository. Too many false positives and developers will ignore the tool. Check whether findings show the data flow and a clear fix.

Developer Workflow, IDE and CI/CD Integration

Look for pull request comments, IDE plugins, CI/CD integration and support for the SARIF results format so findings flow into one place.

Budget and SMB Fit

Weigh license model, the number of developers or repositories covered, hosting needs and the time to tune and manage the tool. Bundled tools in platforms you already use may cover the basics.

Do You Need More Than One Scanner?

Usually, yes. No single tool covers everything. A practical small-team stack is one SAST tool, one SCA tool (often the same platform), secrets scanning in the repository, a DAST scanner for running web apps, and a network vulnerability scanner for servers. Consolidated platforms reduce the number of consoles but may be weaker in some areas.

US and UK Considerations (NIST SSDF, CISA, NCSC, Cyber Essentials)

NIST’s Secure Software Development Framework (SP 800-218) includes using code analysis and testing tools, and US federal software suppliers attest to these practices. CISA’s Secure by Design guidance urges vendors to reduce entire classes of vulnerability. In the UK, the NCSC’s Software Security Code of Practice sets expectations for software vendors, and Cyber Essentials requires timely patching, which vulnerability scanners help track.

Choosing Tools Is the Easy Part

Code security scanning tools only help if developers act on their findings. Pick tools that fit your languages and workflow, start with a small set of rules, and track fixes, not just alerts. For help building a scanning program around your development process, contact Cyber Security Solutions Ltd through our contact page.