Popup Control
Blocks browser windows from unauthorized opening.
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Other platforms
Summary
Popup Control is the ideal solution for stopping pop-ups. It does NOT need Firefox's builtin popup blocker to function, nor does it interfere with Firefox's builtin popup blocker. You can literally have both running one on top of the other. Not only that, it also has an option to allow user to enable Firefox's strict pop-up filtering policy. The concept behind the algorithm is beautifully crafted and presented in a simple intuitive UI. (That is why I was a little taken aback when I was informed that products without a description would be rejected).
Using Popup Control is simple, refer to the screenshots for details. Of course, for those who like reading, there are even more usage instructions in the settings page.
Safety
Risk impact
Popup Control is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Popup Control if you trust the publisher.
Risk likelihood
Popup Control may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.