Open Source Alternatives to NextDNS

A DNS firewall that blocks malware, phishing, ads, trackers, and provides parental controls across devices and networks, offering real-time threat intelligence and customizable blocklists.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to NextDNS give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 3 open source alternatives to NextDNS. The most popular are AdGuard Home, Technitium DNS Server and Blocky. Most use the GPL-3.0 or Apache-2.0 license, and 3 offer an official Docker image.