Chrome extension Domain Cage allows you


Privacy	disable tracking tools, analyze who is collecting stats about you
Security	prevent viruses from creeping into your browser (because most of malware is downloaded from external servers)
Comfort	block annoying ads, view sites unobscured
Efficiency	load pages faster and save more CPU and memory, eliminate excessive scripts and content from loading
Control	decide yourself which sites and services will get information about you
Fair Play	be sure of no special terms and conditions, no self-contained tracking scheme behind the scene (oh yes, some similar "free" tools collect data about users and make money on this)
Lightweight	get only minimal yet effective functions, avoid overheads imposed by by side services packed into a bundle
Universal	no database of tracking services, no dependency from a server

Find more information in the documentation