Ghostery is a free and open-source privacy and security-related browser extension and mobile browser application.

The goal of Sizzy is to save time and increase the productivity of designers and developers. Work on your website and instantly preview the changes on multiple devices at once.

Enhance your Wikipedia experience with a beautiful, clean, modern design that's fully customizable. Once installed, this free extension will simply apply the new look and features to existing Wikipedia article pages, without you having to do anything.