FTLDNS™ (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole®'s Web interface.

Fast: stats are read directly from memory by coupling our codebase closely with dnsmasq
Versatile: upstream changes to dnsmasq can quickly be merged in without much conflict
Lightweight: runs smoothly with minimal hardware and software requirements such as Raspberry Pi Zero
Interactive: our API can be used to interface with your projects
Insightful: stats normally reserved inside of dnsmasq are made available so you can see what's really happening on your network