Gatekeeper vs HARPP DDoS Mitigator: Side-by-Side Comparison (2026)

Gatekeeper: An open source DDoS protection system that uses distributed algorithms to defend against multi-vector attacks and scale to handle varying bandwidth requirements for network operators and service providers..

HARPP DDoS Mitigator: Hardware DDoS mitigation appliance using Deep DDoS Inspection (DDI™) tech. built by Labris Networks. Core capabilities include DDI™ (Deep DDoS Inspection) technology for real-time DDoS traffic detection and mitigation, Anomaly detection engine using heuristic and non-heuristic algorithms, 34+ data sensors for traffic analysis and threat identification..

Both serve the DDoS Mitigation market but differ in approach, feature depth, and target audience.

Gatekeeper is open-source with 1,591 GitHub stars. HARPP DDoS Mitigator is developed by Labris Networks. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Gatekeeper and HARPP DDoS Mitigator serve similar DDoS Mitigation use cases: both are DDoS Mitigation tools, both cover DDOS, Traffic Filtering, Network Protection. Key differences: Gatekeeper is Free while HARPP DDoS Mitigator is Commercial, Gatekeeper is open-source. Review the feature comparison above to determine which fits your requirements.