external_c2 framework vs Havoc Framework: Side-by-Side Comparison (2026)

external_c2 framework: A Python framework for building custom Command and Control interfaces that implements Cobalt Strike's External C2 specification for data transfer between frameworks..

Havoc Framework: Open-source C2 framework for red team ops and adversary simulation. Core capabilities include Multi-operator collaborative teamserver, HTTP/HTTPS and SMB listener support, Demon implant/agent with in-memory execution..

Both serve the Red-Team & Adversary Emulation market but differ in approach, feature depth, and target audience.

external_c2 framework is open-source with 241 GitHub stars. Havoc Framework is open-source with 8,237 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

external_c2 framework and Havoc Framework serve similar Red-Team & Adversary Emulation use cases: both are Red-Team & Adversary Emulation tools, both cover C2, Red Team. Review the feature comparison above to determine which fits your requirements.