Mellivora vs OffSec Proving Grounds: side-by-side comparison (2026)

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.

OffSec Proving Grounds: Online lab platform offering hands-on penetration testing practice machines for OSCP prep. Built by OffSec.

The table above shows where their features, integrations, deployment and company size fit differ.

Mellivora is open-source with 453 GitHub stars. OffSec Proving Grounds is made by OffSec. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Mellivora and OffSec Proving Grounds are both Cyber Range Training products, and both cover CTF, Education. Key differences: Mellivora is Free while OffSec Proving Grounds is Commercial, Mellivora is open-source. Use the table above to see where features, deployment and company size fit differ.