Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
dnsmasq - Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.
memcached - High-performance, distributed memory object caching system
YogaDNS - YogaDNS automatically intercepts DNS requests at the system level and allows you to process them...
MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
Polipo - A small and fast caching web proxy (a web cache, an HTTP proxy, a proxy server).