I would nominate uBlock, but the developer isn't soliciting donations, afaik.

μBlock, or uBlock, a general purpose web blocker anti-tracking extension. Available for Chromium/Chrome, Opera, and as a beta build for Firefox and Safari.

Uses less resources than any software of the same class. Adding block lists is a simple as a check of a box. Supports dynamic filtering.
posted by <hidden> • 2 years and 11 months ago Link