Open Source Alternatives to DNSFilter

A protective DNS and content filtering service that blocks malware, phishing, and unwanted content across all internet connected devices. The software uses machine learning to discover threats and provides capabilities such as application blocking via AppAware, user behavior analytics through CyberSight, and remote protection for devices roaming off the local network. It is designed for enterprises, small to medium businesses, educational institutions, government agencies, and managed service providers. The product is deployed as a DNS resolver and includes a centralized dashboard for viewing network activity reporting and managing universal block and allow lists. It provides a Dual Anycast network to maintain speed and stability while securing clicks on any device, regardless of the organization size or location.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to DNSFilter give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 1 open source alternative to DNSFilter. The most popular is Blocky. It uses the Apache-2.0 license and ships an official Docker image.