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OWASP Juice Shop CTF Extension is a free cyber range training tool. Mellivora is a free cyber range training tool. Compare features, ratings, integrations, and community reviews side by side to find the best cyber range training fit for your security stack.
Based on our analysis of available product data, here is our conclusion:
OWASP Juice Shop CTF Extension
Security training leads running internal CTF programs will move faster with OWASP Juice Shop CTF Extension because it eliminates manual event scaffolding across multiple CTF platforms through a single CLI. The tool ships with 462 GitHub stars and zero licensing cost, making it the lowest-friction option for teams already standardized on Juice Shop's intentionally vulnerable application. Skip this if your organization needs a managed platform that handles player registration, scoring dashboards, and post-event analytics; this is automation for the infrastructure layer, not the tournament layer.
Security teams running internal CTF competitions or capture-the-flag training programs should use Mellivora for its lightweight, self-hosted architecture; you get full control over challenge creation and scoring without vendor lock-in or monthly bills. With 453 GitHub stars and PHP-based deployment, it's proven enough for university programs and mid-sized security training operations that want to host their own infrastructure. Skip this if you need a managed platform with slick UX or integration into a broader security awareness suite; Mellivora requires hands-on administration and assumes your team is comfortable with open-source tooling.
A Node.js CLI tool that automates the setup of CTF events using OWASP Juice Shop challenges across multiple CTF frameworks.
Mellivora Mellivora is a PHP-based CTF engine that provides comprehensive competition hosting capabilities with challenge management, team scoring, and administrative tools for cybersecurity competitions.
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Common questions about comparing OWASP Juice Shop CTF Extension vs Mellivora for your cyber range training needs.
OWASP Juice Shop CTF Extension: A Node.js CLI tool that automates the setup of CTF events using OWASP Juice Shop challenges across multiple CTF frameworks..
Mellivora: Mellivora Mellivora is a PHP-based CTF engine that provides comprehensive competition hosting capabilities with challenge management, team scoring, and administrative tools for cybersecurity competitions..
Both serve the Cyber Range Training market but differ in approach, feature depth, and target audience.
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