How many alternatives to Gatekeeper are available?

There are 42 alternatives to Gatekeeper listed on CybersecTools, all within the DDoS Mitigation category. Each alternative is matched based on shared capabilities, tags, and NIST CSF coverage areas.

Is Gatekeeper free or commercial?

Gatekeeper is a free DDoS Mitigation tool. You can use it at no cost. Both free and commercial alternatives are available for comparison.

What type of tool is Gatekeeper?

Gatekeeper is a DDoS Mitigation tool within the broader Network Security category. It is used by security professionals for ddos mitigation capabilities and can be compared against 42 similar tools.

42 Best Gatekeeper Alternatives & Competitors (2026)

Top Gatekeeper Alternatives and Competitors at a Glance

A closer look at the 8 most relevant alternatives and competitors to Gatekeeper, including their key features and shared capabilities.

Akamai Prolexic

Commercial

DDoS Mitigation

DDoS protection for cloud, on-premises, and hybrid environments

Key features: DDoS detection and mitigation, Cloud, on-premises, and hybrid deployment options, Network Cloud Firewall with ACL and rule management, 32 global scrubbing centers with 20+ Tbps defense capacity, Zero-second mitigation SLA

Shares 3 capabilities with Gatekeeper: DDOS, Traffic Filtering, Mitigation

View Akamai Prolexic|Akamai Prolexic alternatives|Compare Akamai Prolexic

Infoblox DNS Infrastructure Protection

Commercial

DDoS Mitigation

Protects DNS infrastructure from DDoS and DNS-based attacks

Key features: DDoS attack detection and blocking, DNS hijacking prevention, Cache poisoning protection, NXDOMAIN attack mitigation, Threat Adapt intelligence integration

Shares 3 capabilities with Gatekeeper: DDOS, Attack Detection, Network Protection

View Infoblox DNS Infrastructure Protection|Infoblox DNS Infrastructure Protection alternatives|Compare Infoblox DNS Infrastructure Protection

Nexusguard DNS Protection

Commercial

DDoS Mitigation

DNS-focused DDoS protection service with scrubbing centers

Key features: DNS-focused DDoS protection, Global network of 40+ DDoS scrubbing centers, Protection for 50,000 ASNs worldwide, DDoS traffic filtering and mitigation, Virtual demo access

Shares 3 capabilities with Gatekeeper: DDOS, Network Monitoring, Mitigation

View Nexusguard DNS Protection|Nexusguard DNS Protection alternatives|Compare Nexusguard DNS Protection

Allot 5G NetProtect

Commercial

DDoS Mitigation

Cloud-native 5G network security for CSPs with DDoS, IoT, and botnet protection.

Key features: Inline DDoS detection and mitigation for both inbound and outbound traffic, Botnet mitigation by monitoring and isolating infected IoT and bot endpoints, IoT security with scalable, automated response to Tbps-level volumetric attacks, Critical application QoE assurance via policy-driven traffic prioritization, Zero-day attack mitigation using machine learning

Shares 3 capabilities with Gatekeeper: DDOS, Traffic Filtering, Network Protection

View Allot 5G NetProtect|Allot 5G NetProtect alternatives|Compare Allot 5G NetProtect

DOSarrest

Commercial

DDoS Mitigation

DDoS protection firm acquired by Link11 GmbH in Jan 2021.

Shares 3 capabilities with Gatekeeper: DDOS, Network Protection, Mitigation

View DOSarrest|DOSarrest alternatives|Compare DOSarrest

Genie Networks GenieATM

Commercial

DDoS Mitigation

Network traffic analysis and DDoS detection/mitigation platform for ISPs and IDCs.

Key features: Multi-dimensional traffic analysis using correlated Flow records, SNMP, and BGP data, Machine-learned DDoS detection including carpet bombing and zero-day anomalies, BGP routing instability detection (hijacks, unexpected changes, excessive BGP updates), Real-time and historical Traffic Snapshot with Top-N analysis and drill-down, Automated mitigation via BGP FlowSpec and Remote Black Hole Routing

Shares 3 capabilities with Gatekeeper: DDOS, Traffic Filtering, Mitigation

View Genie Networks GenieATM|Genie Networks GenieATM alternatives|Compare Genie Networks GenieATM

HARPP DDoS Mitigator

Commercial

DDoS Mitigation

Hardware DDoS mitigation appliance using Deep DDoS Inspection (DDI™) tech.

Key features: 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, Proportional analysis based on historical data and time-averaged baselines, Protocol-specific protection and normalization for web and DNS infrastructure

Shares 3 capabilities with Gatekeeper: DDOS, Traffic Filtering, Network Protection

View HARPP DDoS Mitigator|HARPP DDoS Mitigator alternatives|Compare HARPP DDoS Mitigator

Blindspot Intelligent Network & Infra Protection

Commercial

DDoS Mitigation

Behavioral ML-based network protection against DDoS and advanced threats.

Key features: Behavioral traffic baseline profiling using machine learning, Automated sub-second threat detection and mitigation, Real-time dashboards for traffic flows, attack events, and mitigation actions, IP flow analysis with drill-down into source-destination pairs and protocol breakdowns, Historical data retention for traffic telemetry and attack records

Shares 3 capabilities with Gatekeeper: DDOS, Traffic Filtering, Network Protection

View Blindspot Intelligent Network & Infra Protection|Blindspot Intelligent Network & Infra Protection alternatives|Compare Blindspot Intelligent Network & Infra Protection

The most popular alternatives to Gatekeeper include Akamai Prolexic, Infoblox DNS Infrastructure Protection, Nexusguard DNS Protection, Allot 5G NetProtect, and DOSarrest. These DDoS Mitigation tools offer similar capabilities and are frequently compared by security professionals evaluating their options.

Best Gatekeeper Alternatives & Competitors in 2026

Gatekeeper Alternatives and Competitors

Top Gatekeeper Alternatives and Competitors at a Glance

All 42 Alternatives & Competitors to Gatekeeper

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