# Gatekeeper alternatives and competitors (2026)

The closest Gatekeeper alternatives are [SkyCloud Anti-DDoS](https://cybersectools.com/tools/skycloud-anti-ddos), [Blindspot Intelligent Network & Infra Protection](https://cybersectools.com/tools/blindspot-intelligent-network-and-infra-protection) and [Akamai Prolexic](https://cybersectools.com/tools/akamai-prolexic). Picking a Gatekeeper alternative comes down to fit: DDoS Mitigation coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.

43 alternatives. Closest matches: SkyCloud Anti-DDoS, Blindspot Intelligent Network & Infra Protection, Akamai Prolexic.

## The product

[Gatekeeper](https://cybersectools.com/tools/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.

Category: [Network Security](https://cybersectools.com/categories/network-security) · Pricing model: Free

## Gatekeeper alternatives and competitors

Gatekeeper is a free [DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) solution. The closest matches by shared tags and NIST CSF 2.0 coverage are [SkyCloud Anti-DDoS](https://cybersectools.com/tools/skycloud-anti-ddos), [Blindspot Intelligent Network & Infra Protection](https://cybersectools.com/tools/blindspot-intelligent-network-and-infra-protection), [Akamai Prolexic](https://cybersectools.com/tools/akamai-prolexic), [Infoblox DNS Infrastructure Protection](https://cybersectools.com/tools/infoblox-dns-infrastructure-protection), and [Allot 5G NetProtect](https://cybersectools.com/tools/allot-5g-netprotect). All 43 alternatives on this page are ranked the same way.

Want a free option? See [free and open source network security solutions](https://cybersectools.com/free), plus free picks in other categories.

## The closest Gatekeeper alternatives

These 8 solutions overlap most with Gatekeeper. Each one says what the product does and, when the overlap is big enough, which capabilities it shares.

### 1. [SkyCloud Anti-DDoS](https://cybersectools.com/tools/skycloud-anti-ddos)

Enterprise DDoS mitigation service with 24/7 monitoring and 3-layer traffic scrubbing

[DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) · Commercial

Key features: 8 listed. See them on the [SkyCloud Anti-DDoS page](https://cybersectools.com/tools/skycloud-anti-ddos#features).

Shares 6 capabilities with Gatekeeper: DDoS, Network Monitoring, Attack Detection, Traffic Filtering +2 more

[SkyCloud Anti-DDoS alternatives](https://cybersectools.com/alternatives/skycloud-anti-ddos) · [Gatekeeper vs SkyCloud Anti-DDoS](https://cybersectools.com/compare/gatekeeper-vs-skycloud-anti-ddos)

### 2. [Blindspot Intelligent Network & Infra Protection](https://cybersectools.com/tools/blindspot-intelligent-network-and-infra-protection)

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

[DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) · Commercial

Key features: 10 listed. See them on the [Blindspot Intelligent Network & Infra Protection page](https://cybersectools.com/tools/blindspot-intelligent-network-and-infra-protection#features).

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

[Blindspot Intelligent Network & Infra Protection alternatives](https://cybersectools.com/alternatives/blindspot-intelligent-network-and-infra-protection) · [Gatekeeper vs Blindspot Intelligent Network & Infra Protection](https://cybersectools.com/compare/blindspot-intelligent-network-and-infra-protection-vs-gatekeeper)

### 3. [Akamai Prolexic](https://cybersectools.com/tools/akamai-prolexic)

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

[DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) · Commercial

Key features: 10 listed. See them on the [Akamai Prolexic page](https://cybersectools.com/tools/akamai-prolexic#features).

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

[Akamai Prolexic alternatives](https://cybersectools.com/alternatives/akamai-prolexic) · [Gatekeeper vs Akamai Prolexic](https://cybersectools.com/compare/akamai-prolexic-vs-gatekeeper)

### 4. [Infoblox DNS Infrastructure Protection](https://cybersectools.com/tools/infoblox-dns-infrastructure-protection)

Protects DNS infrastructure from DDoS and DNS-based attacks

[DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) · Commercial

Key features: 10 listed. See them on the [Infoblox DNS Infrastructure Protection page](https://cybersectools.com/tools/infoblox-dns-infrastructure-protection#features).

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

[Infoblox DNS Infrastructure Protection alternatives](https://cybersectools.com/alternatives/infoblox-dns-infrastructure-protection) · [Gatekeeper vs Infoblox DNS Infrastructure Protection](https://cybersectools.com/compare/gatekeeper-vs-infoblox-dns-infrastructure-protection)

### 5. [Allot 5G NetProtect](https://cybersectools.com/tools/allot-5g-netprotect)

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

[DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) · Commercial

Key features: 7 listed. See them on the [Allot 5G NetProtect page](https://cybersectools.com/tools/allot-5g-netprotect#features).

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

[Allot 5G NetProtect alternatives](https://cybersectools.com/alternatives/allot-5g-netprotect) · [Gatekeeper vs Allot 5G NetProtect](https://cybersectools.com/compare/allot-5g-netprotect-vs-gatekeeper)

### 6. [Genie Networks GenieATM](https://cybersectools.com/tools/genie-networks-genieatm)

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

[DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) · Commercial

Key features: 10 listed. See them on the [Genie Networks GenieATM page](https://cybersectools.com/tools/genie-networks-genieatm#features).

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

[Genie Networks GenieATM alternatives](https://cybersectools.com/alternatives/genie-networks-genieatm) · [Gatekeeper vs Genie Networks GenieATM](https://cybersectools.com/compare/gatekeeper-vs-genie-networks-genieatm)

### 7. [Nexusguard DNS Protection](https://cybersectools.com/tools/nexusguard-dns-protection)

DNS-focused DDoS protection service with scrubbing centers

[DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) · Commercial

Key features: 7 listed. See them on the [Nexusguard DNS Protection page](https://cybersectools.com/tools/nexusguard-dns-protection#features).

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

[Nexusguard DNS Protection alternatives](https://cybersectools.com/alternatives/nexusguard-dns-protection) · [Gatekeeper vs Nexusguard DNS Protection](https://cybersectools.com/compare/gatekeeper-vs-nexusguard-dns-protection)

### 8. [DOSarrest](https://cybersectools.com/tools/dosarrest)

DDoS protection firm acquired by Link11 GmbH in Jan 2021.

[DDoS Mitigation](https://cybersectools.com/categories/ddos-mitigation) · Commercial

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

[DOSarrest alternatives](https://cybersectools.com/alternatives/dosarrest) · [Gatekeeper vs DOSarrest](https://cybersectools.com/compare/gatekeeper-vs-dosarrest)

## All 43 products like Gatekeeper

The 8 above, plus:

- [HAProxy ALOHA](https://cybersectools.com/tools/haproxy-aloha): Hardware load balancer appliance with L4/L7 proxying and DDoS protection. (Commercial)
- [Azure DDoS Protection and Mitigation Services](https://cybersectools.com/tools/azure-ddos-protection-and-mitigation-services): Azure DDoS Protection and Mitigation Services by Microsoft Azure for secure cloud solutions. (Commercial)
- [Imperva DDoS Protection](https://cybersectools.com/tools/imperva-ddos-protection): Cloud-based DDoS mitigation for Layer 3, 4, and 7 attacks with 3-second SLA (Commercial)
- [Corero SmartWall ONE](https://cybersectools.com/tools/corero-smartwall-one): DDoS mitigation system with network threat defense capabilities (Commercial)
- [NETSCOUT Arbor Edge Defense (AED)](https://cybersectools.com/tools/netscout-arbor-edge-defense-aed): AI-powered inline DDoS protection deployed at network edge perimeter (Commercial)
- [NETSCOUT Arbor Managed DDoS Protection Services](https://cybersectools.com/tools/netscout-arbor-managed-ddos-protection-services): Managed DDoS protection service with 24x7 SOC support and mitigation (Commercial)
- [NETSCOUT Arbor Threat Mitigation System](https://cybersectools.com/tools/netscout-arbor-threat-mitigation-system): DDoS mitigation system for ISPs, cloud providers, and enterprises (Commercial)
- [Nexusguard Edge Protection](https://cybersectools.com/tools/nexusguard-edge-protection): DDoS protection solution with scrubbing centers and threat mitigation (Commercial)
- [Nexusguard Network Protection](https://cybersectools.com/tools/nexusguard-network-protection): DDoS protection solution with global scrubbing centers and ISP partnerships (Commercial)
- [Nexusguard Application Protection](https://cybersectools.com/tools/nexusguard-application-protection): DDoS protection solution for web applications and network infrastructure (Commercial)
- [Nexusguard Bastions](https://cybersectools.com/tools/nexusguard-bastions): DDoS protection service with global scrubbing centers for ISPs and enterprises (Commercial)
- [Nexusguard Clean Pipe](https://cybersectools.com/tools/nexusguard-clean-pipe): DDoS protection service with global scrubbing centers and clean pipe delivery (Commercial)
- [Myra Network Security Solutions](https://cybersectools.com/tools/myra-network-security-solutions): DDoS protection for data centers via cloud, hybrid, or on-prem deployment (Commercial)
- [MCK Managed DDoS Protection](https://cybersectools.com/tools/mck-managed-ddos-protection): Managed DDoS mitigation service with multi-layered protection & monitoring (Commercial)
- [Secure64 Vizion](https://cybersectools.com/tools/secure64-vizion): Managed DNS security service protecting DNS infrastructure from attacks and outages. (Commercial)
- [AWS Shield](https://cybersectools.com/tools/aws-shield): AWS Shield provides managed DDoS protection for your applications, automatically detecting and mitigating sophisticated network-level DDoS events. (Commercial)
- [HAProxy ALOHA Virtual Load Balancer](https://cybersectools.com/tools/haproxy-aloha-virtual-load-balancer): Virtual load balancer appliance with L4/L7 proxying and DDoS protection. (Commercial)
- [DDactic DDoS Resilience Testing Platform](https://cybersectools.com/tools/ddactic-ddos-resilience-testing-platform): Distributed platform for DDoS resilience testing and attack surface reconnaissance (Commercial)
- [Akamai Edge DNS](https://cybersectools.com/tools/akamai-edge-dns): Cloud-based DNS service with DDoS protection and traffic management (Commercial)
- [Indusface AppTrana](https://cybersectools.com/tools/indusface-apptrana): Managed DDoS protection service for websites and APIs with 24x7 SOC monitoring (Commercial)
- [Fastly DDoS Protection](https://cybersectools.com/tools/fastly-ddos-protection): Cloud-based DDoS protection for apps and APIs with automatic mitigation (Commercial)
- [Alibaba Cloud Anti-DDoS](https://cybersectools.com/tools/alibaba-cloud-ai-coding-assistant-lingma): Alibaba Cloud's global DDoS protection service with 20+ Tbit/s mitigation capacity. (Commercial)
- [NSFOCUS Anti-DDoS System](https://cybersectools.com/tools/nsfocus-anti-ddos-system): On-premises DDoS mitigation appliance for service providers (Commercial)
- [Baffin Bay Network DDoS Protection](https://cybersectools.com/tools/baffin-bay-network-ddos-protection): DDoS mitigation service protecting networks and data centers from attacks (Commercial)
- [NETSCOUT Arbor Sightline](https://cybersectools.com/tools/netscout-arbor-sightline): AI/ML-driven DDoS attack detection & network visibility platform (Commercial)
- [NETSCOUT Arbor Cloud DDoS Protection Services](https://cybersectools.com/tools/netscout-arbor-cloud-ddos-protection-services): Cloud-based DDoS mitigation service with hybrid on-premise protection (Commercial)
- [Link11 DDoS Emergency](https://cybersectools.com/tools/link11-ddos-emergency): Emergency DDoS mitigation service with 24/7 support and traffic redirection (Commercial)
- [Link11 Secure CDN](https://cybersectools.com/tools/link11-secure-cdn): CDN with DDoS protection and AI-driven threat detection capabilities (Commercial)
- [Link11](https://cybersectools.com/tools/link11): EU-based DDoS protection and web application security platform (Commercial)
- [Nexusguard](https://cybersectools.com/tools/nexusguard): DDoS protection platform with global scrubbing centers and ISP partnerships (Commercial)
- [MazeBolt RADAR](https://cybersectools.com/tools/mazebolt-radar): Continuous DDoS testing platform that validates defenses via nondisruptive sims. (Commercial)
- [F5 BIG-IP DNS](https://cybersectools.com/tools/f5-big-ip-dns): DNS and Global Server Load Balancing solution with DDoS protection (Commercial)
- [Nexusguard Origin Protection](https://cybersectools.com/tools/nexusguard-origin-protection): DDoS protection solution with origin server protection capabilities (Commercial)
- [Avydos DDoS Threat Simulation](https://cybersectools.com/tools/avydos-ddos-threat-simulation): Self-service cloud platform for controlled DDoS simulation and resilience testing. (Commercial)
- [NETSCOUT Arbor Sightline Mobile](https://cybersectools.com/tools/netscout-arbor-sightline-mobile): DDoS threat detection & traffic anomaly monitoring for 4G/5G mobile networks (Commercial)

## Alternatives to each of these

[SkyCloud Anti-DDoS alternatives](https://cybersectools.com/alternatives/skycloud-anti-ddos) · [Blindspot Intelligent Network & Infra Protection alternatives](https://cybersectools.com/alternatives/blindspot-intelligent-network-and-infra-protection) · [Akamai Prolexic alternatives](https://cybersectools.com/alternatives/akamai-prolexic) · [Infoblox DNS Infrastructure Protection alternatives](https://cybersectools.com/alternatives/infoblox-dns-infrastructure-protection) · [Allot 5G NetProtect alternatives](https://cybersectools.com/alternatives/allot-5g-netprotect) · [Genie Networks GenieATM alternatives](https://cybersectools.com/alternatives/genie-networks-genieatm) · [Nexusguard DNS Protection alternatives](https://cybersectools.com/alternatives/nexusguard-dns-protection) · [DOSarrest alternatives](https://cybersectools.com/alternatives/dosarrest) · [HAProxy ALOHA alternatives](https://cybersectools.com/alternatives/haproxy-aloha) · [Azure DDoS Protection and Mitigation Services alternatives](https://cybersectools.com/alternatives/azure-ddos-protection-and-mitigation-services) · [Imperva DDoS Protection alternatives](https://cybersectools.com/alternatives/imperva-ddos-protection) · [Corero SmartWall ONE alternatives](https://cybersectools.com/alternatives/corero-smartwall-one)

## Compare Gatekeeper with

- [Gatekeeper vs SkyCloud Anti-DDoS](https://cybersectools.com/compare/gatekeeper-vs-skycloud-anti-ddos)
- [Gatekeeper vs Blindspot Intelligent Network & Infra Protection](https://cybersectools.com/compare/blindspot-intelligent-network-and-infra-protection-vs-gatekeeper)
- [Gatekeeper vs Akamai Prolexic](https://cybersectools.com/compare/akamai-prolexic-vs-gatekeeper)
- [Gatekeeper vs Infoblox DNS Infrastructure Protection](https://cybersectools.com/compare/gatekeeper-vs-infoblox-dns-infrastructure-protection)
- [Gatekeeper vs Allot 5G NetProtect](https://cybersectools.com/compare/allot-5g-netprotect-vs-gatekeeper)
- [Gatekeeper vs Genie Networks GenieATM](https://cybersectools.com/compare/gatekeeper-vs-genie-networks-genieatm)
- [Gatekeeper vs Nexusguard DNS Protection](https://cybersectools.com/compare/gatekeeper-vs-nexusguard-dns-protection)
- [Gatekeeper vs DOSarrest](https://cybersectools.com/compare/gatekeeper-vs-dosarrest)

## Gatekeeper Alternatives FAQ

### What are the closest alternatives to Gatekeeper?

The closest matches to Gatekeeper by shared tags and NIST CSF 2.0 coverage are SkyCloud Anti-DDoS, Blindspot Intelligent Network & Infra Protection, Akamai Prolexic, Infoblox DNS Infrastructure Protection, and Allot 5G NetProtect. All of them are DDoS Mitigation products.

### How many alternatives to Gatekeeper are available?

This page shows 43 alternatives to Gatekeeper, all in the DDoS Mitigation category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.

### Is Gatekeeper free or commercial?

Gatekeeper is a free DDoS Mitigation product. You can use it at no cost. Only commercial alternatives are listed here. Free and open source products are under /free.

### What type of solution is Gatekeeper?

Gatekeeper is a DDoS Mitigation product in the Network Security category. You can compare it with the 43 other DDoS Mitigation products on this page.

---

Source: https://cybersectools.com/alternatives/gatekeeper

For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any product or compare page has a Markdown copy too (add .md to its URL).

More on Gatekeeper and its alternatives: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=alternatives-md