QuaranTab is described as 'Safely use sensitive data with online tools. Browser extension to cut-off network access to a website to prevent it from phoning home. This allows you to input sensitive data into a website without worrying about it being stolen' and is an app in the security & privacy category. There are more than 10 alternatives to QuaranTab for a variety of platforms, including Windows, Mac, Mozilla Firefox, Linux and Web-based apps. The best QuaranTab alternative is Firefox Multi-account Containers, which is both free and Open Source. Other great apps like QuaranTab are Island, Facebook Container, Temporary Containers and Ghost Browser.