Categorized lists of domain names people may want to block. Current focus is on corporations.
These domain names can be also added to pi-hole blocklists for network-wide effect.
Hosts file locations:
/etc/hosts
C:\WINDOWS\system32\drivers\etc\hosts
Domains can also be efficiently blocked with Dnsmasq and Privoxy. See drduh/config/domains and drduh/config/privoxy/user.action for examples.
Additional ad server, malware and other blocklists can be found at StevenBlack/hosts and Sinfonietta/hostfiles