Gatekeeper is a free DDoS mitigation solution. Nexusguard DNS Protection is a commercial DDoS mitigation solution by Nexusguard. Features, integrations, deployment and the company behind each one, side by side.
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.
DNS-focused DDoS protection service with scrubbing centers
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Based on what each listing shows: deployment, company size, price and open source.
Gatekeeper fits if you need to run it on your own servers, you need a free product and you want an open-source product.
Nexusguard DNS Protection fits if you want a cloud product.
Common questions when comparing Gatekeeper vs Nexusguard DNS Protection for DDoS mitigation.
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.
Nexusguard DNS Protection: DNS-focused DDoS protection service with scrubbing centers. Built by Nexusguard.
The table above shows where their features, integrations, deployment and company size fit differ.
Gatekeeper is open-source with 1,591 GitHub stars. Nexusguard DNS Protection is made by Nexusguard. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Gatekeeper and Nexusguard DNS Protection are both DDoS Mitigation products, and both cover DDoS, Network Monitoring, Mitigation. Key differences: Gatekeeper is Free while Nexusguard DNS Protection is Commercial, Gatekeeper is open-source. Use the table above to see where features, deployment and company size fit differ.
No DDoS Mitigation shortlist yet. This is the closest one.
Updated 2026-11-02
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