Pi-hole is a network-level ad blocker that acts as a DNS server and DHCP server, filtering advertisements across all devices on your network. Developers use it to block ads and tracking domains at the DNS level rather than relying on browser extensions, and to learn about DNS server implementation, network configuration, and Linux system administration. It runs on Raspberry Pi and other Linux systems, providing a dashboard for managing blocked domains and monitoring network traffic.

34 open issues · last updated Jul 23, 2026