This is an "alpha" version. Use at your own risk. Privacy Badger will work on Firefox and Chrome only.
Since advertisers and trackers pay no or little attention to the Do Not Track option, the Electronic Frontier Foundation has developed an app to enforce your wishes. It isn't an ad blocker, although it's based on the AdBlock Plus engine.
It has a "whitelist" feature and they intend to add blocking of "fingerprinting" in a future release.