[TomGuy]

Firefox Anti-Tracking Extensions:

DoNotTrackPlus
https://www.abine.com/

Ghostery
https://www.ghostery.com/

Disconnect
https://disconnect.me/

[Some of the above also work with other browsers. Check the websites.]

[usconservative]

DoNotTrackPlus and Ghostery are excellent recommendations.

I use Ghostery and am very satisfied with its performance. I've DoNotTrackPlus in the past and also thought it performed well.