A free and open-source Firefox extension that allows you to detect the third parties that are tracking your movements by using cookies

Visualize who's tracking you in real time. To get started, click on the Lightbeam icon in the bottom-right corner of your browser. (You may need to show the Add-on Bar to see the icon.)

Lightbeam (formerly Collusion) is an experimental Firefox add-on which enables you, for the first time, to see all the third parties that are tracking your movements across the Web.

Lightbeam will show, in real time, how that data creates a spider-web of interaction between companies and other trackers.

Lightbeam is cross-platform and it works on Mac OS X, Windows and Linux.

last updated on:
August 1st, 2014, 19:35 GMT
file size:
773 KB
developed by:
license type:
Mozilla Public License 
operating system(s):
Mac OS X
binary format:
Home \ Internet Utilities \ Firefox Extensions


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3 Screenshots
Lightbeam - From Lightbeam's user interface, you can view the 3rd party sites that are tracking you.Lightbeam - You can also check the sites that are tracking you as seen on a clock.Lightbeam - The List view displays details about the 3rd party sites which are tracking your movements.
What's New in version 1.0.8
  • This release dramatically speeds up switching between visualizations and fixes issues with recent versions of Firefox Nightly.
read full changelog

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