Ghostery
Ghostery sees the invisible web - tags, web bugs, pixels and beacons. Ghostery tracks the trackers and gives you a roll-call of the ad networks, behavioral data providers, web publishers, and other companies interested in your activity. After showing you who's tracking you, Ghostery also gives you a chance to learn more about each company it identifies. How they describe themselves, a link to their privacy policies, and a sampling of pages where we've found them are just a click away. Ghostery allows you to block scripts from companies that you don't trust, delete local shared objects, and even block images and iframes. Ghostery puts your web privacy back in your hands. Ghostery has different builds for the different browsers.
