Alibaba Cloud Anti-DDoS vs Gatekeeper: Side-by-Side Comparison (2026)

Alibaba Cloud Anti-DDoS: Alibaba Cloud's global DDoS protection service with 20+ Tbit/s mitigation capacity. built by Alibaba Cloud. Core capabilities include Global scrubbing centers with 20+ Tbit/s total mitigation capacity, AI and machine learning-based detection and mitigation of sophisticated DDoS attacks, Anti-DDoS Proxy: DNS-based traffic diversion with origin IP masking..

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..

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

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

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