Best Open Source Alternatives to Cloudflare Gateway

Compare the best free and open-source alternatives to Cloudflare Gateway — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 3 alternatives

Cloudflare Gateway

Proprietary SaaS

PricingFreemium

Platformsweb, linux, macos, windows, android, ios

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Cloudflare Gateway alternatives compared

Open-source alternatives to Cloudflare Gateway, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Pi-hole	61,635	EUPL-1.2	LinuxDocker	Yes	Nov 2026	Visit
AdGuard Home	38,101	GPL-3.0	LinuxmacOSWindowsDocker	Yes	Nov 2026	Visit
Unbound	5,025	BSD-3-Clause	LinuxmacOSWindowsDocker	Yes	Nov 2026	Visit

Top open-source Cloudflare Gateway alternatives

Pi-hole61,635EUPL-1.2

Pi-hole replaces cloud DNS blockers like NextDNS with a self-hosted sinkhole for Linux and Docker that filters network ads with zero subscription fees.

LinuxDocker

vs Cloudflare Gateway: a free, open-source option you fully control, licensed EUPL-1.2.

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AdGuard Home38,101GPL-3.0

AdGuard Home replaces cloud DNS resolvers like NextDNS with a self-hosted sinkhole that keeps query logs and domain filtering private on local hardware.

LinuxmacOSWindowsDocker

vs Cloudflare Gateway: a free, open-source option you fully control, licensed GPL-3.0.

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Unbound5,025BSD-3-Clause

Open-source validating recursive DNS resolver replacing cloud gateways with fast in-memory caching, DNSSEC validation, and local query privacy.

LinuxmacOSWindowsDocker

vs Cloudflare Gateway: a free, open-source option you fully control, licensed BSD-3-Clause.

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Best Open Source Alternatives to Cloudflare Gateway

Cloudflare Gateway

Cloudflare Gateway alternatives compared

Top open-source Cloudflare Gateway alternatives

The modern standard for Protobuf workflows

Mentoring for backend developers. Consulting for startups.