Best Open Source Alternatives to Quad9

Compare the best free and open-source alternatives to Quad9 — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

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

Quad9

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Quad9 alternatives compared

Open-source alternatives to Quad9, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Technitium DNS Server	9,393	GPL-3.0	LinuxmacOSWindowsDocker	Yes	Jul 2026	Visit
Unbound	4,751	BSD-3-Clause	LinuxmacOSWindowsDocker	Yes	Jul 2026	Visit
Blocky	0	Apache-2.0	LinuxmacOSWindowsDocker	Yes	—	Visit