Filter unhealthy DNS queries with Pi-hole and DNSCrypt to keep your local network safe (one of the most straightforward and most desirable projects for your Raspberry Pi)

Blocks tracking scripts used in Atom/Pulsar packages

The simplest possible content blocker for browsers

Provides a block-list full of domains to block using your favorite ad-blocker that allows custom filtering. (If you want no association with advertisements, suggestions, analytics, and tracers)

qfoxb's hosts file for Pi-Hole, AdGuard and similar.