Zero-Cost Entry13 tools audited

Free Vulnerability Scanning & Code Security & Open Source Software

Technical selection of platforms without financial barrier to entry: permanent free tiers, self-hosted projects, and open-source alternatives.

View full catalog for Vulnerability Scanning & Code Security

Free Limits & Commercial Threshold Matrix

Exact breakdown of quotas, credit card requirements, and commercial allowances before requiring an upgrade.

ToolModelConditionsFree Tier DetailsSSO TaxAction
SemgrepFreemium
No credit card requiredCommercial use allowedUnlimited usage with no expiration
Motor CLI open source gratuito e ilimitado bajo licencia LGPL 2.1, junto con un plan gratuito en la nube para análisis individuales de código.Single Sign-On Tax (Enterprise SAML)Try
Aikido SecurityFreemium
No credit card requiredCommercial use allowedMonthly recurring quota reset
Nivel gratuito permanente disponible para equipos pequeños que incluye escaneos básicos de repositorios y dependencias con límites mensuales.Single Sign-On Tax (Enterprise SAML)Try
GitGuardianFreemium
No credit card requiredCommercial use allowedUnlimited usage with no expiration
Plan Starter gratuito con monitoreo interno de secretos para repositorios personales o equipos pequeños, sin límite de tiempo y sin requerir tarjeta de crédito.Single Sign-On Tax (Enterprise SAML)Try
Mend RenovateFreemium
No credit card requiredCommercial use allowedOne-time trial credits
Versión comunitaria gratuita disponible para autohospedaje o mediante integraciones de código abierto.Single Sign-On Tax (Enterprise SAML)Try
SocketFreemium
No credit card requiredCommercial use allowedMonthly recurring quota reset
Nivel gratuito permanente disponible para repositorios de código abierto y desarrolladores individuales.Single Sign-On Tax (Enterprise SAML)Try
SnykFreemium
No credit card requiredCommercial use allowedMonthly recurring quota reset
Incluye un número limitado de análisis mensuales de código y dependencias para desarrolladores individuales.Single Sign-On Tax (Enterprise SAML)Try
SonarFreemium
No credit card requiredCommercial use allowedUnlimited usage with no expiration
Permanent free tier with monthly usage allowances.Single Sign-On Tax (Enterprise SAML)Try
Ryzova UCEFree
No credit card requiredCommercial use allowedUnlimited usage with no expiration
100% Free and open source without commercial limits.StandardTry
SetRepoFreemium
No credit card requiredCommercial use allowedUnlimited usage with no expiration
Escaneos rápidos gratuitos disponibles de forma indefinida con comprobaciones básicas de seguridad.StandardTry
hCaptchaFreemium
No credit card requiredCommercial use allowedMonthly recurring quota reset
Nivel gratuito disponible para editores y sitios web de tráfico moderado con funcionalidades estándar de protección contra bots.StandardTry
DetectifyFree
No credit card requiredCommercial use allowedMonthly recurring quota reset
El plan Starter incluye hasta 5 usuarios y 1 equipo con tarifa de plataforma anual de 0 euros, ideal para desarrolladores y hackers individuales.Single Sign-On Tax (Enterprise SAML)Try
ArnicaFreemium
No credit card requiredCommercial use allowedUnlimited usage with no expiration
Nivel gratuito disponible para equipos pequeños que buscan proteger repositorios privados.Single Sign-On Tax (Enterprise SAML)Try
AvastFreemium
No credit card requiredRestricted to personal / non-commercial useUnlimited usage with no expiration
Protección antivirus básica gratuita disponible de forma indefinida para uso personal en PC, Mac y dispositivos móviles.StandardTry

Audited Free & Freemium Platforms (13)

Semgrep

4.6/5.01 verified review
FreemiumOpen SourceLGPL-2.1

Application security platform offering SAST, SCA, and AI-assisted secrets detection.

  • Fast semantic analysis engine with highly customizable YAML rules.
  • Broad support for numerous programming languages and modern frameworks.
  • Open-source community edition with unlimited local execution via CLI.

17.4kstars on GitHub

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Aikido Security

4.6/5.01 verified review
FreemiumOpen SourceLGPL-2.1

Unified security platform for code, cloud infrastructure, and developer workflows.

  • Significant reduction in false positives through contextual analysis.
  • Automated remediation capabilities integrated into development workflows.
  • Unified coverage spanning code, cloud, and supply chain.

3.3kstars on GitHub

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GitGuardian

4.5/5.01 verified review
Freemium

Credential layer security platform for detecting leaked secrets and managing risks

  • Automated secret detection across multiple code repositories and workflows
  • High accuracy in identifying false positives through contextual analysis
  • Native integration with developer toolchains and CI/CD pipelines
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Mend Renovate

4.5/5.01 verified review
FreemiumOpen SourceAGPL-3.0

Automated dependency management and package update tool.

  • Significant reduction in time spent on manual dependency maintenance.
  • Broad compatibility with multiple language ecosystems and package managers.
  • High configuration flexibility to tailor update frequency and formats.

22.9kstars on GitHub

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Socket

4.5/5.01 verified review
Freemium

Developer-first software supply chain security platform

  • Proactive detection of malicious packages and zero-day attacks before installation.
  • Broad coverage across multiple package registries including npm, PyPI, Go, and Cargo.
  • Native GitHub integration to block pull requests containing risky dependencies.
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Snyk

4.4/5.01 verified review
Freemium

Developer-first security platform for code, dependencies, containers, and infrastructure.

  • Early vulnerability detection directly inside the IDE workflow.
  • Broad language and package manager support.
  • Automated fix generation via pull requests.
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Sonar

4.4/5.01 verified review
Freemium

Static code analysis platform ensuring quality, security, and automated code review.

  • Early detection of security vulnerabilities and logical bugs.
  • Native integration with major CI/CD platforms and development environments.
  • Comprehensive support for analyzing AI-generated code snippets.
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Ryzova UCE

4.4/5.01 verified review
FreeOpen SourceMPL-2.0

Deterministic, rule-based software compatibility analyzer for Git repositories and project archives.

  • Deterministic engine ensuring consistent results without hallucinations.
  • Local-first architecture protects source code confidentiality.
  • Database of 6,500 schema-validated rules for precise diagnostics.

1stars on GitHub

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SetRepo

4.4/5.01 verified review
Freemium

Automated security scanners for web apps and AI-generated software.

  • Comprehensive scanning covering source code, dependencies, secrets, and the live website.
  • Provides specific code fixes for every detected vulnerability.
  • Read-only access to GitHub repositories without making changes to the source code.
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hCaptcha

4.4/5.01 verified review
Freemium

Real-time bot detection and fraud prevention with a privacy-first approach

  • Strong focus on user privacy and compliance with GDPR and CCPA
  • High effectiveness in mitigating automated bots and AI agents
  • Zero PII deployment options for sensitive enterprise environments
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Detectify

4.4/5.01 verified review
Free

Application security platform combining DAST and attack surface management.

  • Crowdsourced hacker research integrated directly into testing rules.
  • Simultaneous coverage of REST and GraphQL APIs alongside traditional DAST.
  • Continuous automated discovery of external attack surface assets.
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Arnica

4.4/5.01 verified review
Freemium

Agentic application security platform for AI-generated code.

  • Native scanning integrated directly into AI agent workflows.
  • Proactive risk reduction before code reaches the main branch.
  • Comprehensive coverage across SAST, SCA, IaC, and secret detection.
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Avast

3.7/5.01 verified review
Freemium

Cybersecurity solution for workstations and mobile devices

  • AI-powered heuristic scanning engines
  • Broad multi-platform coverage across desktop and mobile operating systems
  • Permanent free tier available for basic usage
View AnalysisVisit Website (opens in a new tab)