C3 vs Core Security Outflank Security Tooling: side-by-side comparison (2026)

C3: C3 is a framework by WithSecureLabs for rapid prototyping of custom command and control channels that integrates with existing offensive security toolkits.

Core Security Outflank Security Tooling: Red team toolkit for EDR evasion, initial access, and post-exploitation. Built by Core Security.

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

C3 is open-source with 1,735 GitHub stars. Core Security Outflank Security Tooling is made by Core Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. C3 and Core Security Outflank Security Tooling are both Red-Team & Adversary Emulation products, and both cover Red Team, C2. Key differences: C3 is Free while Core Security Outflank Security Tooling is Commercial, C3 is open-source. Use the table above to see where features, deployment and company size fit differ.