Privacy Badger, from the EFF, watches which third parties track you across sites and automatically blocks the repeat offenders. No lists to configure: it learns as you browse, and it is built by one of the most reputable digital rights organizations there is.
It is a tracker blocker, not an ad blocker, and pairing it with uBlock Origin duplicates some work. For people who want set-and-forget from a name they can trust, this is it.
