A pihole is a whole "home" adware/malware/spyware blocker. It runs on a raspberry Pi but can also run on a physical/virtual install of several different Linux distributions. Not only can it block ads on your computer but can also block ads on technology that you can't (easily) block ads on ("Smart" TV / stock cellphone / IoT devices / etc). In addition, with some easy to instal additional (free) software you can block ads even when not at "home"!